Carbon Steel Plates & Sheets

Carbon Steel Plates & Sheets Supplier in India — A36, A283, A516 & More

When your project demands structural integrity you can trust under pressure, heat, and load — carbon steel plates and sheets remain the engineer’s first choice. At Kalpataru Piping, we supply a comprehensive range of carbon steel plates and sheets manufactured to ASTM A36, A283, A516, and ASME SA516 standards, catering to industries from oil and gas exploration to heavy construction and shipbuilding. Our stock covers thicknesses from 0.3 mm to 120 mm, widths up to 3,000 mm, and an extensive selection of surface finishes hot rolled (HR), cold rolled (CR), checkered, perforated, and shim — so you can match the exact specification your application requires. As an ISO-certified stockist and global exporter, Kalpataru Piping partners with procurement teams, fabricators, and EPC contractors across 50+ countries, offering competitive pricing, full mill test certificates (MTC), and on-time delivery from our Mumbai warehouse. Whether you need standard plate sizes or custom cut-to-length carbon steel sheets, our experienced team is ready to support your next project.

Thickness runs anywhere from a thin 0.3mm shim sheet up past 120mm plate, hot rolled or cold rolled, in widths up to 3 metres and lengths up to 12. If you’re not sure which grade actually fits your application — and a lot of people aren’t, the specs overlap more than you’d think — our technical team will talk it through with you rather than just quote whatever’s sitting in stock. For a broader read on the material itself, we’ve also put together a short guide on what is carbon steel, worth a look if you’re new to sourcing it. Send us your size, grade, and quantity and we’ll get a number back to you quickly — not a placeholder, an actual quote.

What Are Carbon Steel Plates & Sheets?

Carbon steel is an iron-carbon alloy containing up to 2.1% carbon by weight, with no significant alloying elements added beyond manganese, silicon, and trace quantities. The carbon content directly governs hardness, tensile strength, and weldability — which is why engineers classify carbon steel into low, medium, and high-carbon grades to match the structural demands of each application.

A carbon steel plate typically refers to flat-rolled steel with a thickness above 6 mm (approximately 3/16 inch), while a carbon steel sheet covers thinner material from 0.3 mm upward. Both forms share the same alloy base but differ in gauge, forming characteristics, and end-use suitability. Plates are the go-to choice for heavy structural fabrication, pressure vessels, and boiler construction, whereas sheets are used in lighter fabrication, enclosures, ductwork, automotive panels, and precision components.

Kalpataru Piping stocks both in a full range of grades and finishes, sourced from reputable mills and third-party tested to ensure every piece meets the specification on your purchase order. Explore our related carbon steel products including carbon steel pipes & tubes, carbon steel flanges, and carbon steel fasteners.

Table of Contents

• ASTM A53 Grade B Pipe Supplier in India — Seamless & ERW Carbon Steel Pipes
• What Is ASTM A53 Grade B Pipe?
• ASTM A53 Grade B Pipe Technical Specification
• ASTM A53 B Pipe Chemical Composition (Max %)
• ASTM A53 Grade B Pipe Mechanical Properties
• ASTM A53 B Pipe Size, Schedule & Weight Chart
• ASTM A53 Grade B Pipe Pressure Rating Reference
• ASTM A53 Grade B Pipe Equivalent
• Frequently Asked Questions

Features & Benefits of Carbon Steel Plates & Sheets

A few practical points before you order carbon steel plates or carbon steel sheets from us:

• Thickness from 0.3mm shim stock up to 120mm heavy plate — thin and thick both handled in-house.
• Hot rolled and cold rolled stock, plus boiler-quality (BQ) plate for pressure equipment.
• Widths up to 3000mm, lengths up to 12000mm — custom cut to your drawing if standard sizes don’t fit.
• Surface finishes from mill-scale black through pickled & oiled, 2B, and hairline, depending on the end use.
• Cutting, shearing, and minor fabrication done on-site rather than outsourced.
• Mill TC as standard, third-party inspection through SGS, TUV, or BV when the project needs it.

Plate orders often go out alongside carbon steel flanges and carbon steel buttweld fittings when the job is a full fabrication package rather than just flat stock.

Carbon steel plates and sheets Applications

Carbon steel plates and sheets serve virtually every sector where strength, reliability, and value matter. Our customers span:

For specialised applications in high-pressure or cryogenic environments, our low temperature carbon steel pipes & tubes and ASTM A210 Gr. C tubes complement our plate and sheet range perfectly.

Manufacturing Process & Quality Assurance

Understanding how carbon steel plates are produced helps you select the right material for your application:

1. Steelmaking Carbon steel begins in the electric arc furnace (EAF) or basic oxygen furnace (BOF), where iron, carbon, and alloying additions are combined and refined to the desired chemistry.
2. Continuous Casting Molten steel is cast into slabs via continuous casting, which ensures consistent internal structure and minimises segregation defects.
3. Hot Rolling (HR) Slabs are reheated above 1,100°C and passed through a rolling mill under high pressure to reach the target thickness. Hot rolling produces a characteristic blue-grey mill scale on the surface.
4. Cold Rolling (CR) For sheets requiring tighter tolerances and a smoother finish, hot-rolled coils are acid-pickled to remove scale, then cold-reduced at room temperature. This work-hardens the material and produces the clean, bright finish characteristic of CR sheets.
5. Heat Treatment Depending on grade requirements, plates may be normalised, quenched and tempered (Q&T), or stress-relieved to achieve specified mechanical properties.
6. Quality Inspection at Kalpataru Piping

• Dimensional verification: thickness, width, length, flatness, and squareness per relevant ASTM/ASME tolerances
• Visual inspection for surface defects, delamination, and mill scale uniformity
• Hardness testing (Brinell/Vickers) where specified
• Chemical analysis cross-check against MTCs
• Third-party inspection by SGS, BV, TUV, or Lloyds on client request

All inspection records are retained and supplied with the shipment documentation.

Certifications & Documentation

Kalpataru Piping operates under a rigorous quality management framework, giving customers confidence in every order:

Approved by / Supplied to: Government PSUs, EPC contractors, petrochemical refineries, shipyards, and power utilities across India and internationally. Third-party inspection reports from SGS, Bureau Veritas, Lloyd’s Register, and TUV Rheinland available on request.

Carbon Steel Plates & Sheets Price List

Looking for the latest carbon steel plates and sheets price list? Kalpataru Piping supplies carbon steel plates and sheets in different grades, thicknesses and dimensions for industrial fabrication, construction, pressure vessels and engineering applications.

The carbon steel plate price per kg depends on the material grade, thickness, manufacturing process, order quantity and cutting requirements. Common options include ASTM A36, ASTM A283, ASTM A572 and ASTM A516 Grade 60 and 70. Hot rolled and cold rolled sheets are available depending on the required application and specification.

Contact Kalpataru Piping for current carbon steel sheet prices, bulk order rates and custom cut-to-size requirements. Share your preferred grade, thickness, dimensions and quantity to receive a quotation.

CS Plate Weight Calculator

Use our CS plate weight calculator to quickly estimate the weight of a carbon steel plate based on its length, width and thickness. Enter the required dimensions to calculate the approximate plate weight in kilograms for material planning, costing, transportation and fabrication requirements.

FAQ’s About Carbon Steel Plates & Sheets