Carbon Steel Pipes & Tubes Manufacturer, Supplier & Exporter in India

Carbon Steel Pipe | Carbon Steel Tube | Carbon Steel Seamless Tube | Carbon Steel Welded Tube | Carbon Steel Pipe Manufacturer in India | Carbon Steel Tubing Suppliers

Amardeep Steel Centre manufactures, stocks, and exports carbon steel pipes and tubes in seamless and welded forms from Mumbai, India. As established carbon steel pipe manufacturers in India, we supply CS pipes and CS tubes conforming to internationally recognised standards including ASTM A106 Gr.B/C, ASTM A53 Gr.B, ASTM A333 Gr.1/6, ASTM A179, ASTM A192, ASTM A210, API 5L Gr.B through X70 and their ASME equivalents SA106, SA53, SA179, and SA192. 

We supply all major pipe types seamless (hot-rolled and cold-drawn), ERW, EFW, LSAW, and SSAW in sizes ranging from ½" NB up to 60" NB, with seamless available up to 24" NB and SAW pipes up to 100" NB. Wall thicknesses span Schedule 10 through Schedule XXS and carbon pipes are available in round, square, rectangular, U-tube, and coil forms to suit a wide range of process and structural requirements. 

Every carbon steel pipe for sale from our facility is backed by full documentation including EN 10204 3.1 Mill Test Certificates, IBR Form III-D where required, and NABL-approved third-party inspection. We source from reputed mills in India (MSL, Jindal), Japan (Sumitomo, Nippon), Korea, and Europe. With a minimum order quantity of just 1 metric ton from ready stock and lead times ranging from ex-stock to 12–16 weeks for indent material, we serve customers across 50+ countries in Asia, the Middle East, Europe, the Americas, and Africa. 

What Are Carbon Steel Pipes & Tubes?

Carbon steel pipes and tubes are hollow cylindrical products manufactured primarily from carbon and iron, with carbon content typically ranging from 0.06% to 1.5%. The mechanical properties of tensile strength, yield strength, hardness, and toughness vary directly with carbon content and heat treatment, making carbon steel pipe one of the most versatile and widely specified piping materials across global industries.

Commonly referred to as CS pipe or CS tube in the trade, carbon steel piping is the default material choice for oil and gas transmission lines, high-temperature process piping, boiler and heat exchanger service, structural applications, and general engineering. It provides an optimal balance of strength, pressure resistance, machinability, and cost-effectiveness that no other single material category can match at scale. Learn more about carbon steel properties and how they compare with other materials. 

The production method determines whether a carbon steel pipe is classified as seamless or welded. Seamless pipes are produced through hot rolling or cold drawing, resulting in a strong, uniform, and pressure-tight tube with no weld seam. Welded pipes including ERW, EFW, LSAW, and SSAW are formed by rolling steel plate or strip into a cylindrical shape and joining the seam by resistance or submerged arc welding, making them a cost-effective choice for a broad range of industrial and structural applications. 

For a detailed comparison, see our guide on seamless vs welded pipe for industrial applications.

Types of Carbon Steel Pipes & Tubes

Seamless Carbon Steel Pipe

Seamless carbon steel pipes are manufactured without a weld seam through hot rolling or cold drawing of solid steel billets. The absence of a longitudinal weld makes seamless CS pipe inherently stronger and more pressure-resistant, particularly suited for high-temperature, high-pressure service in oil & gas, power generation, and chemical processing.

ERW Carbon Steel Pipe (Electric Resistance Welded)

ERW carbon steel pipes are produced by rolling steel strip or coil into a cylindrical form and fusing the seam using electric resistance welding. ERW CS pipes offer a cost-effective solution for general piping, water lines, structural applications, and lower-pressure process systems. Available in sizes from 1/2" NB to 24" NB in API 5L Gr.B, X42, X52, X60, and X65.

LSAW Carbon Steel Pipe (Longitudinal Submerged Arc Welded)

LSAW pipes are formed from steel plates and welded longitudinally using submerged arc welding. Best suited for large-diameter, thick-wall applications in oil and gas transmission, offshore pipelines, and piling. Available in sizes 16" NB to 100" NB, grades API 5L Gr.B to X70 PSL1/PSL2.

SSAW Carbon Steel Pipe (Spiral Submerged Arc Welded)

SSAW (spiral welded) pipes are manufactured by spirally forming steel strip and submerged arc welding both the inner and outer seams. Used for large-diameter water transmission lines, piling, and structural applications where pressure requirements are moderate.

Carbon Steel Tubes

Carbon steel tubes differ from pipes primarily in their application tubes are used for heat transfer, structural, and precision mechanical applications where dimensional accuracy and surface finish are critical. Amardeep Steel supplies CS tubes to ASME/ASTM SA179, SA192, SA210, SA178, SA214, in forms including straight tubes, U-tubes, coil tubes, and finned tubes.

Carbon Steel Pipe Grades & Standards

Carbon steel pipes and tubes are manufactured to a wide range of international standards. Below are the primary grades stocked and supplied by Amardeep Steel as carbon steel pipe suppliers to global industries: 

ASTM / ASME Grades

Explore individual grade pages: ASTM A106 Gr.B/C Pipes & Tubes | ASTM A53 / ASME SA53 Pipes | ASTM A333 Gr.1 | ASTM A333 Gr.6 | ASTM A179 / SA179 Tubes | ASTM A192 / SA192 Boiler Tubes | ASTM A210 / SA210 Tubes | ASTM A214 / SA214 Tubes | ASTM A519 / SA519 Tubes | ASTM A671 Welded Pipes | ASTM A672 Welded Pipes 

API 5L Grades

Browse API 5L grade pages: API 5L Seamless Line Pipes (Gr.B to X70) | API 5L Gr.B PSL1 | API 5L Gr.B PSL2 | API 5L X42 PSL1 | API 5L X52 PSL1 | API 5L X65 PSL2 | API 5L X70 PSL2 

European / DIN / JIS Standards

Amardeep Steel also supplies carbon steel pipes to European and Japanese standards including DIN 2391 St35 / St37 / St52, EN 10305-1 Grade E235, EN 10217, EN 10219 S235JRH / S355J2H, BS 3059 Boiler Tubes, JIS G3461, JIS G3466, and JIS G3444 structural tubes. These are frequently specified by carbon steel pipe manufacturers serving European EPC contractors and process plant builders. 

Carbon Steel Pipes & Tubes Specifications

• Sizes (Seamless): 1/2" NB to 60" NB
• Sizes (ERW): 1/2" NB to 24" NB
• Sizes (SAW/LSAW): 16" NB to 100" NB
• Wall Thickness: Schedule 10 to Schedule XXS (up to 250 mm on request)
• OD Range: 10.3 mm to 1500 mm
• Wall Range: 2.11 mm to 50 mm+
• Forms: Round, Square, Rectangular, Coil, U-Tube
• Length: Single Random (SRL), Double Random (DRL), Cut to Length
• End Conditions: Plain End (PE), Bevelled End (BE), Threaded & Coupled (T&C)
• Surface Treatment: Black (As-Rolled), Varnished, Oiled, Galvanized (HDG)
• Coatings Available: FBE, 3LPE, 3LPP, Coal Tar Epoxy, Liquid Epoxy
• Certifications: EN 10204 3.1 MTC, EN 10204 3.2, IBR Form III-D
• Inspection: Hydrostatic Test, Ultrasonic Test (UT), Radiographic Test (RT), PMI, Hardness Test, Impact (Charpy V-Notch)
• Third-Party Inspection: SGS, Bureau Veritas (BV), TÜV, Lloyd's, IRS, CEIL
• Dimensional Standards: ASME B36.10M (Carbon Steel), ANSI B36.19

For dimensional data, visit our Pipe Dimension Chart or use our Steel Weight Calculator.

Seamless vs Welded Carbon Steel Pipe – Which to Choose?

For critical high-pressure, high-temperature service refineries, power plants, boilers specify seamless CS pipe. For large-diameter transmission lines, structural applications, and cost-sensitive projects, welded carbon steel pipe is the standard choice. Read our detailed technical blog on how to choose the right carbon steel seamless pipes for your application. 

Carbon Steel Pipe Dimensions & Schedule Reference

Carbon steel pipe dimensions are standardised under ASME B36.10M. Nominal Pipe Size (NPS) refers to a nominal bore designation, not the actual outside diameter. Wall thickness is designated by "Schedule" — the higher the schedule number, the thicker the wall. Understanding these dimensions is essential when evaluating carbon steel pipe price per kg, since wall thickness directly affects weight and material cost. 

Common Carbon Steel Pipe Schedule Reference (OD mm × Wall mm):

For full dimensional data including Sch 20, 30, 60, 100, 120, 140 and weights per metre, refer to our Pipe Dimension Chart or browse individual schedule pages: Schedule 40 Steel Pipe | Schedule 80 Steel Pipe | Schedule 160 Steel Pipe. 

For guidance on choosing between schedules, read our blog on the difference between Schedule 40 and Schedule 80 pipe.

Mechanical Properties of Carbon Steel Pipes

Carbon Steel Pipe Price

Carbon steel pipe price varies based on multiple factors including grade, production method (seamless or welded), size, wall thickness, mill origin, and current steel market conditions. The carbon steel pipe price per kg in India is also influenced by whether the material is supplied ex-stock or produced to indent. 

Indicative Price Range (FOB India, subject to market conditions)

• Carbon Steel ERW Pipe (API 5L Gr.B): USD 850–1,200/MT

• Carbon Steel Seamless Pipe (ASTM A106 Gr.B): USD 1,020–2,050/MT

• API 5L X65 Seamless Pipe: USD 2,655–4,797/MT

• ASTM A333 Gr.6 Seamless Pipe: USD 1,200–2,230/MT 

In Indian rupee terms, carbon steel pipe price per kg for ASTM A106 Grade B pipes typically ranges from ₹70–95/kg, API 5L X52 from ₹90–130/kg, and ASTM A333 Grade 6 from ₹95–160/kg. Prices are indicative and subject to grade, size, schedule, mill, and market conditions at time of order. 

Get Today's Carbon Steel Pipe Price

Carbon Steel Pipe & Tube Applications

Oil & Gas Industry

Carbon steel pipe is the dominant piping material in the oil and gas sector. API 5L Grade B through X70 seamless and welded pipes are used for onshore and offshore pipeline transmission of crude oil, natural gas, and refined products. ASTM A106 Gr.B seamless pipe is the standard specification for refinery process piping operating at elevated temperatures.

Power Generation & Boilers

Boiler drum headers, superheater coils, and high-pressure steam lines in power stations use ASTM A192, ASTM A210, and ASTM A106 Gr.B/C seamless carbon steel tubes. IBR (Indian Boiler Regulations) compliance is mandatory for pressure parts in Indian power plants — Amardeep Steel supplies IBR-certified material with Form III-D.

Heat Exchangers & Condensers

ASTM A179 (cold-drawn seamless low-carbon), ASTM A192 (high-pressure boiler tubes), and ASTM A214 (ERW heat exchanger tubes) are the primary carbon steel tube grades for heat exchanger and condenser applications in petrochemical, fertilizer, and power industries.

Construction & Infrastructure

Carbon steel structural pipes — EN 10219, JIS G3444, IS 1161 — are used extensively in building columns, trusses, scaffolding, piling (ASTM A252), and water transmission lines (AWWA C200).

Fertilizer & Chemical Processing

Carbon steel pipes in Sch 80 to Sch 160 are used in ammonia service, urea plants, and chemical reactor piping where moderate corrosion resistance and high-pressure containment are required.

Shipbuilding & Marine

Carbon steel pipes for marine applications are supplied to classification society standards (IRS, LR, BV, ABS) for ballast systems, cargo piping, and engine room service lines.

Automotive & Hydraulic Systems

Cold-drawn seamless carbon steel tubes (DIN 2391, ASTM A519, SAE J524) are used for hydraulic lines, fuel injection systems, and precision mechanical tubing in automotive and industrial machinery manufacturing.

Testing, Inspection & Quality Assurance

All carbon steel pipes and CS tubes supplied by Amardeep Steel Centre undergo the following quality checks in accordance with applicable ASTM/ASME/API standards: 

Third-party inspection by SGS, Bureau Veritas, TÜV Rheinland, Lloyd's Register, IRS, or CEIL is available on request. All material is supplied with EN 10204 3.1 Mill Test Certificates traceable to heat/lot number. 

Packaging, Marking & Export Documentation

Packaging:

• Plastic or steel end caps on each pipe/tube bore
• Black varnish or rust-preventive oil on external surface
• Bundled in steel-strapped hexagonal or square bundles
• Wooden crating or dunnage for sea freight
• FBE, 3LPE, or transparent film wrapping available on request
• Containerized (FCL/LCL) or break-bulk loading as required 

Pipe Marking (per ASTM/API standard): Each carbon pipe is stencilled or ink-stamped with: Manufacturer Name | Standard | Grade | Size (NPS × Schedule) | Heat/Lot Number | Length | Test Pressure | Inspection Mark 

Export Documentation: Commercial Invoice & Packing List | EN 10204 3.1 Mill Test Certificate (MTC) | Certificate of Origin (CoO) | IBR Form III-D (where applicable) | Third-Party Inspection Release Note | Fumigation Certificate | Bill of Lading | MSDS 

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Frequently Asked Questions – Carbon Steel Pipes & Tubes