Heavy Wall Carbon Steel Pipes Manufacturer and Supplier

Heavy-wall carbon steel pipes are thick-walled conduits built for high-pressure and temperature service where standard wall pipe can't perform. They conform to ASTM A106 / ASME SA-106 and API 5L in schedules 80, 100, 120, 140, 160 and XXS. Key alloying elements include carbon (up to 0.35% max), manganese (0.29 to 1.06%) and silicon. Grade B delivers 60 ksi minimum tensile and 35 ksi yield with 30% elongation.

These pipes are mainly made using a seamless process. Seamless pipes have no weld seam, so they are often chosen for critical high-pressure use. The thick walls handle thermal expansion and high internal pressure in steam headers and chemical reactors.

Sachiya Steel International is an ISO 9001, 14001, and 45001 certified manufacturer, supplier, stockist and exporter of heavy-wall carbon steel pipes based in Mumbai, India, with over 20 years of experience. Sizes go up to 48 inches for outside diameter (OD), with wall thicknesses over 1 inch in XXS pipes. Heat treatment, such as normalising, improves grain structure and toughness for demanding service. We offer seamless, ERW and DSAW pipes for oil and gas, power generation, chemical processing, and structural use, and provide mill test certificates with every order.

The following information is detailed in this page:

Specifications
Pricing
Grades
Types
Industrial Applications
Heavy Wall vs Standard Wall
Shipping and Packaging
Frequently Asked Questions

Heavy Wall Carbon Steel Pipe Specifications

This table outlines the technical specifications for heavy-wall carbon steel pipes. It lists common grades, high-pressure specifications, and popular finishing techniques used in various industrial piping applications.

Parameter	Details
Standard	ASTM A106/ASME SA106
Grades	A106 (Grade A, B, C)
Size Range (OD)	NPS 1/4" to 48"+ (DN 8 to DN 1200+)
Schedule	80, 100, 120, 140, 160, XXS (Double Extra Strong)
Length	Single Random (16-22ft), Double Random (35-42ft), or fixed cut lengths
Form	Seamless (most common for heavy wall), Welded (ERW, SAW, DSAW)
End Type	Bevelled end (standard for heavy wall), Plain end, Threaded & Coupled
Finish	Black primer/varnish, Bare, FBE (Fusion Bonded Epoxy)

Heavy Wall Pipe Dimension Chart

Representative dimensions per ASME B36.10 for selected sizes:

NPS	OD (inches)	Sch 80 Wall	Sch 160 Wall	XXS Wall
2"	2.375	0.218"	0.344"	0.436"
4"	4.500	0.337"	0.531"	0.674"
6"	6.625	0.432"	0.719"	0.864"
8"	8.625	0.500"	0.906"	0.875"

Heavy Wall Carbon Steel Pipe Price

In India, the price of carbon steel pipe begins at ₹75 per kg. Globally, the cost fluctuates often, generally falling between $0.60 and $1.20 per kg, with regional and order size variations influencing the final figure. Pricing depends on specification, grade, OD, wall thickness and quantity.

ASTM A106 / ASME SA-106 Grades

This standard covers seamless carbon steel pipes for high temperatures in three grades. Grade A is for lower-pressure use. Grade B is the common choice for refineries and boilers. Grade C is stronger but needs tighter weld control.

Grade A

Grade A has low carbon and strength. It bends and coils easily for low-pressure systems.

Grade B

Grade B is commonly used in refineries and power plants. It provides good strength and is easy to weld.

Grade C

Grade C provides the highest tensile and yield strength of the three. It handles higher pressures well but is harder to weld and form because of the increased carbon content.

Types of Heavy-Wall Carbon Steel Pipes

Heavy-wall carbon steel pipes are available in the 3 primary types:

Seamless Heavy Wall Carbon Steel Pipe

ERW Heavy Wall Carbon Steel Pipe

DSAW Heavy Wall Carbon Steel Pipe

Heavy Wall Carbon Steel Pipe Industrial Applications

Heavy-wall carbon steel pipes are used in demanding industries where high pressure, extreme heat, or structural weight are factors. The following sections describe how these pipes function in specific sectors.

Oil and Gas Pipelines

Carries crude oil, natural gas, and refined products through high-pressure, long-distance transmission lines across varied terrain.

Power Generation and Boiler Systems

Conveys high-temperature steam above 400 °C in power plant boiler circuits, maintaining pressure integrity under sustained thermal cycling.

Chemical and Petrochemical Processing

Routes aggressive hydrocarbon streams and reactive chemicals through refinery process piping at elevated pressures requiring maximum wall thickness.

Structural and Construction

Thick-wall carbon steel pipe supports columns, piers, and foundation piles where load-bearing capacity drives design in construction for reliable structures.

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Heavy Wall vs Standard Wall Carbon Steel Pipe

This table compares the main differences between standard wall and heavy wall carbon steel pipes.

Feature	Standard Wall Pipe	Heavy Wall Pipe
Typical Schedules	Schedule 40, STD (Standard)	Schedule 80, 160, XXS (Double Extra Strong)
Wall Thickness	Thinner; designed for lower pressure	Thicker; built for high-pressure/stress
Common Standards	ASTM A53, ASTM A106 Grade B	ASTM A106 and API 5L
Manufacturing	Welded (ERW) or Seamless	Primarily Seamless
Connection Method	Threaded, Grooved, or Welded	Mainly Butt-welded (Bevelled ends)
Primary Use	Water lines, HVAC, low-pressure steam	Refineries, high-pressure gas, chemical plants
Durability	Standard corrosion allowance	Higher allowance for wear and high heat

Shipping and Packaging

Heavy-duty wooden boxes Packing

Export Packaging Standard

We strictly follow seaworthy export handling standards to protect heavy wall carbon steel pipe from transit damage, moisture ingress, and surface contamination during long-distance dispatch.

Heavy-duty wooden boxes with moisture barrier lining
HDPE stretch film wrapping on all bundles
Plastic end caps on threaded and plain-end pipes
Silica gel desiccants to minimize moisture exposure
ISPM-15 fumigated wooden packaging for export

Pipe Bundle Yard Staging

Container End-Cap Protection

Wrapped Export-Ready Bundles

We Export Worldwide

Sachiya Steel International supplies carbon steel products to major industrial markets across North America, Europe, the Middle East, Asia and Africa with export-ready documentation and logistics support.

USA
Canada

Frequently Asked Questions

What is considered a Heavy-Wall Pipe?+

A heavy-wall pipe typically has a wall thickness above Schedule 40. This covers Sch 80, Sch 120, Sch 160, XS and XXS per ASME B36.10.

What is the cost of Heavy-Wall Carbon Steel Pipe per kg?+

Rates start near Rs 75/Kg for ASTM A106 Grade B in India, and internationally, its prices range from $0.50 to $ 1.50/kg. Final cost depends on OD, wall thickness, grade and quantity.

What sizes are available for Heavy-Wall Carbon Steel Pipes?+

We stock 1/2" NPS to 48" OD in Sch 80 through XXS, with standard lengths of 5.5 to 7 m and 10.7 to 12.8 m.

What is the difference between schedule 80 and XXS pipe?+

XXS is much thicker. A 4" Sch 80 pipe has 0.337" wall; XXS has 0.674", exactly double.

What standards apply to Heavy-Wall Carbon Steel Pipes?+

Three standards apply to heavy-wall carbon steel pipes, known as ASTM A106.

Which grade of ASTM A106 is most commonly used for Heavy-Wall Pipe?+

Grade B. It provides 60 ksi (415 MPa) tensile and 35 ksi (240 MPa) yield with 30% elongation. It's suitable for bending, flanging, and welding.

Can Heavy-Wall Carbon Steel Pipes be welded?+

Yes. ASTM A106 pipe is designed for welding and bending. Preheat requirements rise with wall thickness. Grades A and B weld more readily than Grade C.

Where can I buy Heavy-Wall Carbon Steel Pipes?+

Sachiya Steel International stocks heavy-wall carbon steel pipes in all standard specifications. We export globally from Mumbai with seaworthy packaging and mill test certificates.