by kalpataru | Sep 1, 2022 | Blog
Introduction
People often choose stainless steel for kitchen appliances and other products. This metal is inexpensive, long-lasting, and comes in both sheet and plate forms. But this stainless steel has both pros and cons. This blog post talks about the pros of 304-grade stainless steel, like how it doesn’t rust and can handle high temperatures.
What is 304 Stainless Steel
304 Stainless Steel, also called 304, is a type of steel that is used to make a wide range of appliances and long-lasting items. It is an all-purpose steel alloy that can be used for many different things. A very popular type of stainless steel is 304 stainless steel, which is also known as “Inconel.” It is a high-quality metal that doesn’t rust and is often used in the automotive and aerospace industries.
Still, it is also used in other fields, such as shipping, oil exploration, and making electricity. 304 stainless steel is also called “Grade 304” or “A4 Stainless Steel.” This is the most common type of stainless steel used in industry that doesn’t rust.
304-grade stainless steel has more carbon than 430-grade stainless steel. With an A330-O1R 3/32′′ x 3/8′′ electrode, you can weld 304-grade steel.
Types of Stainless Steel
304 is the stainless steel that is used the most around the world. It has a lot of different qualities that make it useful in many different fields. There are different kinds of stainless steel that have different parts, which is why they have different names.
Some of them are the 300 series, the 304 series, the 316 series, and the 317 series. Even though they are all made of different things, they are usually more expensive than other metals used in food service equipment because they don’t have any impurities or elements that are easy to oxidise. A type of stainless steel called 304 Grade steel is used to make metal and non-metal parts. It has at least 18% chromium and 12% nickel, which gives it special qualities like resistance to rust, magnetic properties, and high temperatures.
Stainless Steel 304 Benefits
The grade of stainless steel that is used the most in the metal industry is 304 Grade. It’s the most popular grade because it’s strong, lasts a long time, and doesn’t rust. This grade of stainless steel is perfect for kitchen tools, cutlery, scientific equipment, building materials, tools, pipes, electrical conduits, and fittings. Iron, chromium, nickel, molybdenum, and carbon are mixed together to make 304 stainless steel.
It can stand up to corrosion and wear very well. After aluminium, it is the second most used metal in the world. This metal is also great for saving weight. Grade 304 stainless steel is a very useful material that can be used for a wide range of things. Because it lasts so long, engineers often use it in their work. Grade 304 Stainless Steel can be used in a wide range of industries because it is resistant to corrosion, is not magnetic and can withstand high temperatures.
Advantages and Disadvantages of Grade 304 Stainless Steel
Many different industries use stainless steel of grade 304. Due to its high chromium content, it rusts less and is less resistant to corrosion. Because of this, it is not a good choice for marine environments. But grade 304 stainless steel has many benefits that make it a popular choice in the marine industry. When compared to grades 201 and 202, grade 304 stainless steel is more durable, stronger, and better at stopping vibrations.
This makes it great for things like ship propellers and engines. Grade 304 stainless steel is a type of stainless steel that is more resistant to corrosion and oxidation than other types of stainless steel. It is often used to make things like surgical instruments, food processing equipment, oil and gas pipelines, parts for airplanes and spacecraft, and equipment for the sea. Grade 304 is used in a lot of different fields, but it’s also a great choice for kitchen appliances. This steel is very strong for how light it is, which makes it the perfect material for cooking tools. It is as resistant to corrosion as carbon steel and copper, but it is harder than nickel alloys. Only one thing is bad about grade 304 stainless steel, and that is how much it costs.
Conclusion
In the end, we can say that 304 stainless steel is a great material for making everyday items. It is strong, lasts a long time, and doesn’t rust. It doesn’t break down when put in hot places. 304 Stainless Steel can be used more than once because its surface does not need to be re-coated or covered up with a coating after it is used to make a final product. Grade 304 stainless steel is very resistant to corrosion, abrasion, and cracking from stress corrosion. It is also chemically inert, which means it won’t react with anything else in the environment.
Kalpataru Piping Solutions sells stainless steel items and makes sure that they are pure and of high quality by putting them through a series of tests. Read our other blogs on our website to find out about new things and learn more about our products for your next business needs.
Read More :
The Applications and Benefits of Using Stainless Steel 310 Pipes: Austenitic stainless steel in Grade 310 has outstanding high-temperature characteristics in addition to having strong ductility and weldability.
Different Types of Steel Reinforcement Bars: A number of steel bar types are used in concrete buildings. The endurance of the concrete construction is ensured by the use of reinforced steel bars.
by kalpataru | Aug 24, 2022 | Blog
What are stainless steel 310 pipes?
Austenitic stainless steel in Grade 310 has outstanding high-temperature characteristics in addition to having strong ductility and weldability. The Type 310 stainless steel pipe is frequently employed in high-temperature applications. The high chromium and nickel content of 310-grade steel pipes offers exceptional strength at temperatures up to 2100 °F as well as good corrosion and oxidation resistance.
The benefits of using stainless steel 310 pipes
A low-carbon austenitic stainless steel is Type SS 310 Pipes. Type 310, a variation of Type 310 with less carbon, is well recognized for its capacity to endure high-temperature applications and also provides customers with a number of advantages, such as:
- Excellent corrosion resistance.
- Aqueous corrosion resistance is excellent.
- Continuous use in the 425-860 °C temperature range can reduce aqueous corrosion resistance due to carbide precipitation.
- not prone to cyclic heating or thermal fatigue.
- Form 304 and 309 are superior in most environments.
- High-temperature resistance up to 2100 degrees F
- Cost-efficient
Applications of the stainless steel grade 310/310S
Applications for 310/310S include burners and combustion chambers, fluidized bed combustors, kilns, radiant tubes, petroleum refining tube hangers, steam boilers, internal parts of coal gasifiers, lead pots, thermowells, refractory anchor bolts, annealing covers, saggers, food processing devices, and cryogenic structures.
The advantages of stainless steel sheets and plates are numerous and meet or surpass the requirements for the application. The fundamental benefit of using these stainless steel sheets and plates in hostile situations is their excellent resilience. Because of their dazzling and simple-to-maintain surface, stainless steel sheets and plates are both alluring and difficult. The strength of sheets made of 310 stainless steel is confirmed through a number of tests.
The properties of stainless steel 310 pipes
These grades have 20% nickel and 25% chromium. Its strong corrosion and oxidation resistance are a result of this. Pipes made of the stainless steel grades 310, 310S, and 310H have a lower resistance to embrittlement than other low-carbon varieties. Furthermore, it implies service sensitization. Stainless steel has high and medium nickel and chromium levels, respectively, which allows it to reduce H2S-containing sulfuric atmospheres.
They are frequently utilized in conditions that gently carburize, like those found in industrial facilities. There are many applications for heat-resistant alloys. Steel is stainless The use of Stainless Steel Grade 310/310S/310H Pipes for quenching processes involving common liquids from thermal shocks is not advised. This grade type’s low magnetic permeability and hardness make it a popular choice for cryogenic applications.
These grades, like austenitic stainless steel, are not heated to harden them. Although it can be cold worked to harden, it is rarely employed.
Physical Properties of Grade 310/310S
The following list summarises the physical characteristics of stainless steel 310/310S: density, electrical resistivity, shear modulus, Poisson ratio, electrical conductivity, and melting point at room temperature. Thermal conductivity, coefficient of expansion, and relative magnetic permeability are some further extraordinary physical characteristics.
Mechanical properties of Grade 310/310S
The grades 205, 520, 40, and 225, which have 0.2 percent proof stress, tensile strength, elongation, and hardness, respectively, summarise the mechanical characteristics of grades 310 and 310S.
Read More :
Different Types of Steel Reinforcement Bars: A number of steel bar types are used in concrete buildings. The endurance of the concrete construction is ensured by the use of reinforced steel bars.
What is Scheduled 40 Steel Pipe ? : The most common pipe schedule is Schedule 40 steel pipe. It can be galvanized but isn’t required, and it’s commonly used in water and gas lines. It can also show up in spots that require decoration or support.
by kalpataru | Aug 24, 2022 | Blog
What is Extruded Aluminum?
Extrusion is the technique of driving a material through a die to create a cross-sectional bar, whether it be aluminium or another material. Despite having a number of steps, the method is rather straightforward. The final exterior dimension of the extruded bar must first be produced by a manufacturer or designer using a die.
The finished die is put into an extrusion press where a billet of the desired alloy of aluminium is heated to the necessary temperature, making it malleable. The press then pushes the aluminium through the die, causing a lineal length of regularly formed aluminium to emerge from the other side.
The extruded piece is tension relieved and then cut to the required length after cooling. Now that the metal has undergone post-production processes, it can be heat treated. Less pressure is needed to push the metal through the die since the process occurs at a high temperature, up to 75% of the melting point of aluminium. This indicates that it is quicker than cold forming techniques.
What Is Cold-Finished Aluminum?
Since aluminium is simpler to form at higher temperatures, extrusion is frequently done there as opposed to cold finishing, which is done at ambient temperature. Extremely tight tolerances for the outer diameter are produced by cold finishing. The most typical kind of cold finishing is drawing.
Since aluminium is simpler to form at higher temperatures, extrusion is frequently done there as opposed to cold finishing, which is done at ambient temperature. Extremely tight tolerances for the outer diameter are produced by cold finishing. The most typical kind of cold finishing is drawing.
What is the Difference between Extruded and Cold Finished Aluminum?
Standard aluminium extrusions have the main benefit of being significantly simpler to work with at higher temperatures. An extruded bar often costs less than a cold finished product since this corresponds to faster production rates. Faster production leads to shorter lead times to market.
The tighter dimensional tolerances produced by cold finished production are helpful for using the close-fitting collets present in modern high-speed precision CNC machining machines. Additionally, it enhances the material’s mechanical and physical qualities, boosting machinability and resulting in smaller, quicker-elimination chips during milling.
Extruded and Cold Finished Aluminum are Used in What Applications?
Although extruded aluminium is frequently used in many different applications, it is not appropriate for all of them. The use of the cold finished product as a raw material may result from any requirement for improved properties. Cold polished bar is often used in automotive applications as well as aerospace and defense products that need high strength. In cold finished applications, alloys including 2011, 2024, 6061, and 7075 are employed. Extrusions frequently use the aluminium alloys 1100, 3003, 6061, 6063, and 6101. Probably the most popular is 6061, which is prized for its advantageous characteristics.
Read More :
Different Type of Steel Reinforcement Bars : There are different kinds of steel bars that can be used for building. You should know which one you should choose and why.
Some of the Best Uses of Inconel 600 Round Bars : INCONEL (nickel-chromium-iron) alloy 600 Round bars (UNS N06600/W.Nr. 2.4816) is a technological material that is heat and corrosion resistant. Excellent mechanical properties of the alloy combine high strength with ease of production.
by kalpataru | Aug 24, 2022 | Blog
Introduction
A number of steel bar types are used in concrete buildings. The endurance of the concrete construction is ensured by the use of reinforced steel bars.
Concrete is made with 5 different kinds of steel reinforcement bars.
Hot Rolled Deformed Bars
Cold Rolled Steel Bars
Mild Steel Bars
Twisted Steel Bars
Welded Steel Wire
Hot Rolled Deformed Bars
TMT Bars, which stand for Thermo mechanically treated bars, are another name for hot-rolled deformed bars. Because they have high tensile strength, TMT Bars are often used in RCC (Reinforced Concrete Structure). The ribs on TMT Bars make it possible for cement concrete to stick together better. The best TMT Bars have a tensile strength of 64,000 psi (PSI – Strength of Concrete is measured in pounds per square inch).
Cold Rolled Steel Bars
Even though cold-rolled steel bars are made at room temperature, they look like hot-rolled bars. These bars are made of weak materials and are easy to bend. Cold-rolled bars are almost no longer on the market, but they are still used in some building projects that don’t require a lot of tolerance. It can be stretched up to 60,000 psi.
Mild Steel Bars
This bar is round and has a smooth, flat surface. Mild steel bars are used to make beams and slabs out of RCC. There is a tensile strength of up to 40,000 psi. Mild steel bars are used in small projects with limited funds because they don’t stick well to concrete and aren’t very good.
Twisted Steel Bars
Twisted steel bars are also called “prestressing tendons.” Almost seven different wires have been woven together to make this string. Twisted steel bars have a high tensile strength of 270,000 psi. Most of the time, these are used on scaffold braces to make reinforced cement concrete stronger. It makes sense because of how well it holds together.
Welded Steel Wire
Steel wires are joined together to make weld mesh. A medium amount of tensile strength is made. These are used for fencing, dividing rooms, etc. It is often used in certain parts of buildings because it is easier to find in different diameters and is stronger than a mild steel bar.
It is very important to know that thermomechanically treated (TMT) bars are often used because they have high tensile strength. TMT Bars are strong and also have the right amount of flexibility. Because of this, it offers the best protection possible during any natural disaster, such as an earthquake, flood, etc. TMT Bars have less carbon than other types of steel, which makes them very resistant to corrosion and less likely to wear down over time.
IS Standards say that the Fe 500d grade of TMT Bar is the best mix of strength and flexibility. Because of this, it is highly recommended for building projects.
Read More :
All You Need To Know About Inconel 600 Bars: Inconel 600 is a nickel-chromium composite with great oxidation opposition at higher temperatures, with great obstruction in carburizing and chloride-containing conditions.
Some of the Best Uses of Inconel 600 Round Bars: INCONEL (nickel-chromium-iron) alloy 600 Round bars (UNS N06600/W.Nr. 2.4816) is a technological material that is heat and corrosion resistant. Excellent mechanical properties of the alloy combine high strength with ease of production.
by kalpataru | Aug 17, 2022 | Blog
Choosing the right type of stainless steel pipe for your industrial or commercial project, understanding the difference between ERW and seamless pipe is most important. While both pipe types are used for similar functions, they differ in how they are manufactured, their performance & their cost. When comparing ERW pipe vs seamless pipe a few factors like strength, durability & usage in industries. One of the main things to consider is the ERW pipe vs seamless cost, which depends mainly on the manufacturing process and the materials involved. This blog explores these differences in detail to help you make the best choice for your project.
What Are Seamless Pipes?
Seamless pipes are designed for high precision, to offer consistent wall thickness & exact dimensions. They are available in sizes ranging from 1/8 inch to 26 inches in outer diameter (OD). Used in industrial applications where high strength and reliability are essential. They are also essential in transporting oil and gas, as well as in air and hydraulic cylinders, bearings, boilers, automobiles & many more. Made from a solid piece of metal, typically a steel billet. Seamless pipes are created by piercing & elongating the material to form a hollow tube.
What is an ERW pipe?
ERW pipes are longitudinally welded & can be manufactured up to 24 inches OD, using strips or coils of steel. ERW pipes are formed through a process involving the pulling of a steel ribbon through a series of rollers & subsequent fusion via an electric charge. They are used in low to medium pressure applications to transfer oil & water. ERW Steel Pipe commonly comes in a range of sizes, from 2 3/8 inches OD to 24 inches OD, with various length options extending over 100 feet. Surface finishes are available in both bare & coated formats. As a leading ERW Stainless Steel Pipes Manufacturer and exporter, we offer top ERW pipes from India. Contact us for detailed product information or custom requirements.
ERW Pipe vs Seamless Pipe Manufacturing Process
Understanding the ERW & seamless pipe difference with how they are made. The manufacturing process of seamless pipe vs ERW pipe is different & influences their strength, quality & applications.
Seamless pipes are made from solid round steel billets. These billets are first heated & then pierced using a rotary piercer or extrusion process to create a hollow tube. The pipe is then elongated & rolled to achieve the required thickness and diameter. This method does not involve any welding. They mainly offer superior strength & uniformity.
ERW (electric resistance welded) pipes are designed by cold forming steel sheets into cylindrical shapes. The electric current is applied to generate heat through resistance after edges are met together. This heat fuses the edges together to form a weld without using any filler material. Modern high-frequency ERW techniques ensure a strong & smooth weld to use in medium-pressure applications.
Seamless pipes have slight thickness due to the rolling process, while ERW pipes generally maintain a more uniform thickness because they are made from flat steel strips.
Seamless pipes are ideal for applications that require high strength & pressure resistance. ERW pipes are a more cost-effective solution for standard uses. The right choice depends on your project performance needs & overall budget.
Why use seamless pipes instead of ERW pipes?
Seamless pipes feature a smooth finish with low surface roughness. They are used for applications that need precision & high performance. These pipes are manufactured by drawing solid billets into a tube shape. The overall strength of a seamless pipe matches with the strength of the base material to ensure uniformity & reliability under high pressure.
ERW pipes are made by welding steel sheets or coils along a seam. This material may have high strength & the welded seam is typically the weakest point, which can limit the pipe performance under demanding conditions. Because of this, seamless pipes are often preferred in industries where structural integrity and resistance to pressure are critical.
Why Choose Seamless Pipes for the Oil & Gas Industry?
Seamless pipes offer uniform strength throughout the pipe with no welded joints to reduce the risk of failure under high-pressure conditions. Their precise dimensions & smooth surface ensure secure connections with fittings. It is mainly used for leak-proof operations. ERW pipes may have slight variations in wall thickness & rougher edges to use for high-pressure applications. For critical applications like pipelines & drilling systems, seamless pipes provide the durability, consistency needed to maintain operational integrity to avoid cost.
How to identify Stainless Steel Seamless Pipe or ERW?
To identify whether a stainless steel pipe is seamless or ERW is easy. Just only check the stencil marking on the pipe. If you see ASTM A53 Type S then it’s a seamless pipe. If it is marked as Type E then it’s an ERW (electric resistance welded) pipe. This simple step ensures you select the right pipe for your needs. Seamless pipes are flawless and ERW pipes come with unique manufacturing processes to have high strength. Modern ERW pipes are now highly reliable & perfect for many industrial uses.
At Kalpataru Piping Solutions, we are a leading manufacturer and exporter of ERW stainless steel pipes. We offer a wide variety of pipes with different sizes and shapes designed with ISO and OHSAS-certified materials.
ERW Pipe Thickness Chart and Sizes
| DN |
PIPE OUT DIAMETER (OD) |
ERW PIPE THICKNESS CHART |
| | | | | | | | | | | | | | |
| A SERIES |
B SERIES |
SCH5S |
SCH10S |
SCH20S |
LG |
SCH20 |
SCH30 |
STD |
SCH40 |
SCH60 |
XS |
SCH80 |
SCH100 |
SCH120 |
SCH140 |
SCH180 | |
| 324050 |
42.448.360.3 |
384557 |
1.61.61.6 |
2.82.82.8 |
3.23.23.6 |
— |
–3.2 |
— |
— |
3.63.64.0 |
— |
— |
5.05.05.6 |
— |
— |
— |
6.37.18.8 |
| 658090 |
76.188.9101.6 |
7689- |
2.02.02.0 |
3.03.03.0 |
3.64.04.0 |
— |
4.54.54.5 |
— |
— |
5.05.65.6 |
— |
— |
7.18.08.0 |
— |
— |
— |
10.011.012.5 |
| 100125150 |
114.3139.7168.3 |
108133159 |
2.02.92.9 |
3.03.43.4 |
4.05.05.0 |
— |
5.05.05.6 |
— |
— |
5.96.37.1 |
— |
— |
8.810.011.0 |
— |
11.012.514.2 |
— |
14.216.017.5 |
| 200250300 |
219.1273.0323.9 |
219273325 |
2.93.64.0 |
4.04.04.5 |
6.36.36.3 |
— |
6.36.36.3 |
7.18.08.8 |
— |
8.08.810.0 |
10.012.514.2 |
— |
12.516.017.5 |
16.017.522.2 |
17.522.225.0 |
20.025.028.0 |
22.228.032.0 |
| 350400450500550600 |
355.6406.4457.0508.0559610 |
377426478529-630 |
4.04.04.05.05.05.6 |
5.05.05.05.65.66.3 |
— |
8.08.08.08.08.08.0 |
8.08.08.010.0– |
10.010.011.012.5– |
10.010.010.010.010.010.0 |
11.012.514.216.0-17.5 |
16.017.520.020.0– |
13.013.013.013.013.013.0 |
20.022.225.028.030.032.0 |
25.828.530.032.0– |
28.030.036.040.0– |
32.036.040.045.0– |
36.040.045.050.0– |
ASME B36.19 seamless pipe sizes
| NPS(DN) |
ID |
ODIN(MM) |
WTIN(MM) |
WEIGHTLB/FT(KG/M) |
| 1/8(6) |
5S |
0.405(10.3) |
*1 |
… |
| 1/8(6) |
10S |
0.405(10.3) |
0.049(1.24)*1 |
0.19(0.28) |
| 1/8(6) |
40S |
0.405(10.3) |
0.068(1.73) |
0.24(0.37) |
| 1/8(6) |
80S |
0.405(10.3) |
0.095(2.41) |
0.31(0.47) |
| 1/4(8) |
5S |
0.54(13.7) |
*1 |
… |
| 1/4(8) |
10S |
0.54(13.7) |
0.065(1.65)*1 |
0.33(0.49) |
| 1/4(8) |
40S |
0.54(13.7) |
0.088(2.24) |
0.43(0.63) |
| 1/4(8) |
80S |
0.54(13.7) |
0.119(3.02) |
0.54(0.8) |
| 3/8(10) |
5S |
0.675(17.1) |
*1 |
… |
| 3/8(10) |
10S |
0.675(17.1) |
0.065(1.65)*1 |
0.42(0.63) |
| 3/8(10) |
40S |
0.675(17.1) |
0.091(2.31) |
0.57(0.84) |
| 3/8(10) |
80S |
0.675(17.1) |
0.126(3.2) |
0.74(1.1) |
| 1/2(15) |
5S |
0.84(21.3) |
0.065(1.65)*1 |
0.54(0.8) |
| 1/2(15) |
10S |
0.84(21.3) |
0.083(2.11)*1 |
0.67(1.0) |
| 1/2(15) |
40S |
0.84(21.3) |
0.109(2.77) |
0.85(1.27) |
| 1/2(15) |
80S |
0.84(21.3) |
0.147(3.73) |
1.09(1.62) |
| 3/4(20) |
5S |
1.05(26.7) |
0.065(1.65)*1 |
0.68(1.02) |
| 3/4(20) |
10S |
1.05(26.7) |
0.083(2.11)*1 |
0.86(1.28) |
| 3/4(20) |
40S |
1.05(26.7) |
0.113(2.87) |
1.13(1.69) |
| 3/4(20) |
80S |
1.05(26.7) |
0.154(3.91) |
1.48(2.2) |
| 1(25) |
5S |
1.315(33.4) |
0.065(1.65)*1 |
0.87(1.29) |
| 1(25) |
10S |
1.315(33.4) |
0.109(2.77)*1 |
1.41(2.09) |
| 1(25) |
40S |
1.315(33.4) |
0.133(3.38) |
1.68(2.5) |
| 1(25) |
80S |
1.315(33.4) |
0.179(4.55) |
2.17(3.24) |
| 1¼(32) |
5S |
1.66(42.2) |
0.065(1.65)*1 |
1.11(1.65) |
| 1¼(32) |
10S |
1.66(42.2) |
0.109(2.77)*1 |
1.81(2.69) |
| 1¼(32) |
40S |
1.66(42.2) |
0.14(3.56) |
2.27(3.39) |
| 1¼(32) |
80S |
1.66(42.2) |
0.191(4.85) |
3.0(4.47) |
| 1½(40) |
5S |
1.9(48.3) |
0.065(1.65)*1 |
1.28(1.9) |
| 1½(40) |
10S |
1.9(48.3) |
0.109(2.77)*1 |
2.09(3.11) |
| 1½(40) |
40S |
1.9(48.3) |
0.145(3.68) |
2.72(4.05) |
| 1½(40) |
80S |
1.9(48.3) |
0.2(5.08) |
3.63(5.41) |
| 2(50) |
5S |
2.375(60.3) |
0.065(1.65)*1 |
1.61(2.39) |
| 2(50) |
10S |
2.375(60.3) |
0.109(2.77)*1 |
2.64(3.93) |
| 2(50) |
40S |
2.375(60.3) |
0.154(3.91) |
3.66(5.44) |
| 2(50) |
80S |
2.375(60.3) |
0.218(5.54) |
5.03(7.48) |
| 2½(65) |
5S |
2.875(73) |
0.083(2.11)*1 |
2.48(3.69) |
| 2½(65) |
10S |
2.875(73) |
0.12(3.05)*1 |
3.53(5.26) |
| 2½(65) |
40S |
2.875(73) |
0.203(5.16) |
5.8(8.63) |
| 2½(65) |
80S |
2.875(73) |
0.276(7.01) |
7.67(11.41) |
| 3(80) |
5S |
3.5(88.9) |
0.083(2.11)*1 |
3.03(4.52) |
| 3(80) |
10S |
3.5(88.9) |
0.12(3.05)*1 |
4.34(6.46) |
| 3(80) |
40S |
3.5(88.9) |
0.216(5.49) |
7.58(11.29) |
| 3(80) |
80S |
3.5(88.9) |
0.3(7.62) |
10.26(15.27) |
| 3½(90) |
5S |
4.0(101.6) |
0.083(2.11)*1 |
3.48(5.18) |
| 3½(90) |
10S |
4.0(101.6) |
0.12(3.05)*1 |
4.98(7.41) |
| 3½(90) |
40S |
4.0(101.6) |
0.226(5.74) |
9.12(13.57) |
| 3½(90) |
80S |
4.0(101.6) |
0.318(8.08) |
12.52(18.64) |
| 4(100) |
5S |
4.5(114.3) |
0.083(2.11)*1 |
3.92(5.84) |
| 4(100) |
10S |
4.5(114.3) |
0.12(3.05)*1 |
5.62(8.37) |
| 4(100) |
40S |
4.5(114.3) |
0.237(6.02) |
10.8(16.08) |
| 4(100) |
80S |
4.5(114.3) |
0.337(8.56) |
15.0(22.32) |
| 5(125) |
5S |
5.563(141.3) |
0.109(2.77)*1 |
6.36(9.46) |
| 5(125) |
10S |
5.563(141.3) |
0.134(3.4)*1 |
7.78(11.56) |
| 5(125) |
40S |
5.563(141.3) |
0.258(6.55) |
14.63(21.77) |
| 5(125) |
80S |
5.563(141.3) |
0.375(9.53) |
20.8(30.97) |
| 6(150) |
5S |
6.625(168.3) |
0.109(2.77)*1 |
7.59(11.31) |
| 6(150) |
10S |
6.625(168.3) |
0.134(3.4)*1 |
9.3(13.83) |
| 6(150) |
40S |
6.625(168.3) |
0.28(7.11) |
18.99(28.26) |
| 6(150) |
80S |
6.625(168.3) |
0.432(10.97) |
28.6(42.56) |
| 8(200) |
5S |
8.625(219.1) |
0.109(2.77)*1 |
9.92(14.78) |
| 8(200) |
10S |
8.625(219.1) |
0.148(3.76)*1 |
13.41(19.97) |
| 8(200) |
40S |
8.625(219.1) |
0.322(8.18) |
28.58(42.55) |
| 8(200) |
80S |
8.625(219.1) |
0.5(12.7) |
43.43(64.64) |
| 10(250) |
5S |
10.75(273) |
0.134(3.4)*1 |
15.21(22.61) |
| 10(250) |
10S |
10.75(273) |
0.165(4.19)*1 |
18.67(27.78) |
| 10(250) |
40S |
10.75(273) |
0.365(9.27) |
40.52(60.29) |
| 10(250) |
80S |
10.75(273) |
0.5(12.7)*2 |
54.79(81.53) |
| 12(300) |
5S |
12.75(323.8) |
0.156(3.96)*1 |
21.0(31.24) |
| 12(300) |
10S |
12.75(323.8) |
0.18(4.57)*1 |
24.19(35.98) |
| 12(300) |
40S |
12.75(323.8) |
0.375(9.53)*2 |
49.61(73.86) |
| 12(300) |
80S |
12.75(323.8) |
0.5(12.7)*2 |
65.48(97.44) |
| 14(350) |
5S |
14.0(355.6) |
0.156(3.96)*1 |
23.09(34.34) |
| 14(350) |
10S |
14.0(355.6) |
0.188(4.78)Notes(1),(2) |
27.76(41.36) |
| 14(350) |
40S |
14.0(355.6) |
0.375(9.53)*2 |
54.62(81.33) |
| 14(350) |
80S |
14.0(355.6) |
0.5(12.7)*2 |
72.16(107.4) |
| 16(400) |
5S |
16.0(406.4) |
0.165(4.19)*1 |
27.93(41.56) |
| 16(400) |
10S |
16.0(406.4) |
0.188(4.78)Notes(1),(2) |
31.78(47.34) |
| 16(400) |
40S |
16.0(406.4) |
0.375(9.53)*2 |
62.64(93.27) |
| 16(400) |
80S |
16.0(406.4) |
0.5(12.7)*2 |
82.85(123.31) |
| 18(450) |
5S |
18.0(457) |
0.165(4.19)*1 |
31.46(46.79) |
| 18(450) |
10S |
18.0(457) |
0.188(4.78)Notes(1),(2) |
35.8(53.31) |
| 18(450) |
40S |
18.0(457) |
0.375(9.53)*2 |
70.65(…) |
| 18(450) |
80S |
18.0(457) |
0.5(12.7)*2 |
93.54(…) |
| 20(500) |
5S |
20.0(508) |
0.188(4.78)*1 |
39.82(59.32) |
| 20(500) |
10S |
20.0(508) |
0.218(5.54)Notes(1),(2) |
46.1(68.65) |
| 20(500) |
40S |
20.0(508) |
0.375(9.53)*2 |
78.67(117.15) |
| 20(500) |
80S |
20.0(508) |
0.5(12.7)*2 |
104.23(155.13) |
| 22(550) |
5S |
22.0(559) |
0.188(4.78)*1 |
43.84(65.33) |
| 22(550) |
10S |
22.0(559) |
0.218(5.54)Notes(1),(2) |
50.76(75.62) |
| 22(550) |
40S |
22.0(559) |
… |
… |
| 22(550) |
80S |
22.0(559) |
… |
… |
| 24(600) |
5S |
24.0(610) |
0.218(5.54)*1 |
55.42(82.58) |
| 24(600) |
10S |
24.0(610) |
0.25(6.35)*1 |
63.47(94.53) |
| 24(600) |
40S |
24.0(610) |
0.375(9.53)*2 |
94.71(141.12) |
| 24(600) |
80S |
24.0(610) |
0.5(12.7)*2 |
125.61(187.07) |
| 30(750) |
5S |
30.0(762) |
0.25(6.35)*1 |
79.51(118.34) |
| 30(750) |
10S |
30.0(762) |
0.312(7.92)*1 |
99.02(147.29) |
| 30(750) |
40S |
30.0(762) |
… |
… |
| 30(750) |
80S |
30.0(762) |
… |
… |
ERW Pipe vs Seamless Cost
The cost difference between seamless & ERW pipes arises from their manufacturing processes. Seamless pipes with no weld seam are perfect for high-pressure applications due to their consistent strength & uniform structure. ERW pipes are more cost-effective for less pressure conditions because they are easier to produce & use less material. Seamless pipes have higher cost because they are used in high-pressure & temperature applications. ERW pipes are more affordable to use in applications where extreme pressure resistance is not required.
Frequently Asked Questions on ERW Pipe vs Seamless Pipe
Which is better, seamless or ERW pipe?
Seamless pipes are typically considered better for high-pressure applications. Since these pipes don’t have a weld seam to have a uniform structure with no weak points to provide superior strength & pressure resistance. ERW pipes have a welded seam to use in high corrosive environments.
What is the price difference between ERW and seamless pipes?
Seamless pipes generally cost around 30% more than ERW pipes. The price difference increases for larger diameter pipes. ERW pipes are made by welding steel strips together to make it more affordable as seamless pipes which have more complex manufacturing processes.
When to use a seamless pipe?
Seamless pipes are used in high-pressure applications as they have high strength & resistance to corrosion to transfer fluids such as natural gas & air in industries like oil and gas, power generation & pharma.
What is the ERW pipe used for?
ERW pipes are commonly used in construction, automotive & agricultural applications. ERW pipes are used for medium-pressure applications.
