Carbon Steel Pipe Supplier - High-Quality Seamless & Welded Pipes

Kuaima Steel Co., Ltd.

Verified Custom manufacturer · 7 yrs ·

China

Customizable Rock-bottom price

$525 1-49 ton Base price

$500 50-99 ton 4.8% off

$490 ≥100 ton 6.7% off

Price validity: subject to market conditions

Supplier's customization ability

Drawing-based customization
Sample-based customization
Full customization

Quantity

Minimum order quantity: 1 ton

Shipping total: To be negotiated

Subtotal of goods US$ 525.00

Start order request

Payment and delivery

Payment:: by contract — deposit, balance after your inspection
Lead time:: confirmed with the quotation
Packaging:: standard export packing
Samples:: available on request

Product details

Carbon Steel Pipe Specifications from Reliable Supplier

Property	Parameter	Description
Product Name	Carbon Steel Pipe	Seamless and welded carbon steel pipes for industrial use
Material Grade	ASTM A106 Gr.B / ASTM A53 Gr.B / API 5L Gr.B	Common carbon steel pipe grades supplied
Manufacturing Process	Seamless (HFS/CDS), ERW, LSAW, SSAW	Multiple manufacturing methods available
Standard Compliance	ASTM A106, ASTM A53, API 5L, ASME SA106, EN 10210, EN 10219	Meets major international pipe standards
Carbon (C)	≤0.30%	Carbon content per ASTM A106 Gr.B
Manganese (Mn)	0.29-1.06%	Improves strength and hardenability
Phosphorus (P)	≤0.035%	Controlled for improved ductility
Sulfur (S)	≤0.035%	Low sulfur ensures good weldability
Silicon (Si)	≥0.10%	Acts as deoxidizer and strengthener
Tensile Strength	≥415 MPa	Minimum tensile strength per ASTM A106 Gr.B
Yield Strength	≥240 MPa	Minimum yield strength at room temperature
Elongation	≥30%	Ductility in 50mm gauge length
OD Range	6mm - 1220mm	Seamless: 6-914mm; Welded: up to 1220mm
Wall Thickness	1mm - 120mm	Standard schedules SCH10 to SCH XXS available
Length	5.8m, 6m, 11.8m, 12m or custom	Single random, double random, and cut-to-length
Surface Treatment	Black painted, varnished, galvanized, 3LPE coated	Anti-corrosion coating options per project needs
Application	Oil & gas, power plants, construction, water transmission	Suitable for high-temperature and high-pressure service
Certification	EN 10204 3.1, ISO 9001, API 5L, PED 2014/68/EU	Mill test certificates and third-party inspection available
Packaging	Bundled with steel strips, plastic caps, waterproof wrapping	Standard seaworthy export packaging
MOQ	5 tons	Minimum order quantity per size

Carbon Steel Pipe Supplier - High-Quality Seamless & Welded Pipes

Choosing the right carbon steel pipe supplier is essential for securing reliable materials that meet demanding industrial specifications. As a mill-direct source with over 15 years of export experience, we deliver seamless and welded carbon steel pipes manufactured in compliance with ASTM, API, and EN standards. Our product range serves critical roles in oil and gas transmission, structural engineering, power generation, and mechanical processing — providing procurement teams, project contractors, and EPC companies with factory-competitive pricing and dependable lead times.

What Is a Carbon Steel Pipe?

A carbon steel pipe is a tubular steel product with carbon content typically ranging from 0.05% to 0.25% for low-carbon grades and up to 0.60% for medium-carbon grades, as defined by ASTM A106/A53 and API 5L specifications. These pipes serve as the backbone of fluid transportation, structural support, and high-temperature service across heavy industries worldwide.

Carbon Steel Pipe Technical Specifications

Our inventory covers a comprehensive range of dimensions and grades to match diverse project requirements:

Carbon steel pipe manufacturer

Parameter	Seamless Pipe	Welded Pipe (ERW/LSAW)
Standards	ASTM A106 Gr.B, ASTM A53 Gr.B, API 5L Gr.B–X65	ASTM A53 Gr.B, API 5L PSL1/PSL2, EN 10219
Outer Diameter	21.3 mm – 610 mm (1/2″ – 24″)	21.3 mm – 1620 mm (1/2″ – 64″)
Wall Thickness	2.11 mm – 59.54 mm (SCH 10 – SCH XXS)	1.8 mm – 40 mm
Tensile Strength (Gr.B)	≥ 415 MPa per ASTM A106	≥ 415 MPa per ASTM A53
Yield Strength (Gr.B)	≥ 240 MPa minimum	≥ 240 MPa minimum
Carbon Content (Gr.B)	≤ 0.30% per heat analysis	≤ 0.30% per heat analysis

Why Partner with Our Carbon Steel Pipe Supply Team

Mill-Direct Sourcing: Pipes shipped directly from ISO 9001:2015 and API 5CT/5L certified mills, eliminating unnecessary intermediary costs.
Full Documentation: Every shipment includes EN 10204 3.1 Mill Test Certificates, hydrostatic test reports, and third-party inspection options (SGS, BV, Lloyd's).
Extensive Stock: Over 8,000 metric tons of readily accessible inventory across popular sizes and grades for rapid dispatch.
Value-Added Processing: Beveling, threading, coating (3LPE/3LPP/FBE), and custom cutting per project drawings.

Frequently Asked Questions

What is the minimum order quantity (MOQ)?

Our standard MOQ is 1 metric ton for stock items. For non-standard sizes or API 5L X52–X65 grades, the minimum production run starts at 10 metric tons per specification.

Carbon steel pipe wholesale

Do you provide material test certificates?

Yes. We supply EN 10204 Type 3.1 mill test certificates with every order, covering chemical composition, mechanical properties, and hydrostatic test results. Third-party inspection by SGS or Bureau Veritas is available upon request.

Carbon steel pipe China

What is the typical delivery time?

Stock carbon steel pipes ship within 5–7 business days. Custom production orders, including special wall thickness or coating requirements, typically require 25–35 days depending on quantity and specification complexity.

Can you cut to custom sizes?

Absolutely. We offer precision cutting to custom lengths with a tolerance of ±1 mm, along with beveling (30° or 37.5° per ASME B16.25) and end-finishing services to meet your installation requirements.

Get a Competitive Quote for Carbon Steel Pipes

Ready to secure mill-direct pricing from a proven carbon steel pipe supplier? Share your project specifications — including grade, dimensions, quantity, and delivery destination — and our technical sales team will respond with a detailed quotation within 24 hours. Request your free quote today or explore our stainless steel pipe range for corrosion-resistant alternatives.

Ratings & Reviews

4.5

Based on 8 reviews

5 5

4 2

3 1

2 0

1 0

Chris Martin

Canada

2025-02-05

Acceptable Quality Carbon Steel Pipe — Delivery Issue Resolved

We ordered 12 tons of ASTM A106 Gr.B seamless pipe, 3" and 4" SCH 80, for a refinery maintenance project in Alberta. Material quality itself was fine — MTCs confirmed chemical and mechanical properties were within ASTM A106 specification, and the pipe surfaces were clean with no visible seams or defects. However, the initial shipment was delayed by 9 days beyond the quoted 5–7 business day window due to a logistics issue at the port of origin. The supplier proactively communicated the delay and provided a revised ETA, which helped us adjust our site schedule. They also offered a partial freight credit as compensation. Quality is there, and the issue was handled professionally, so we would consider ordering again with a longer buffer in the schedule.

Wei Chen

Singapore

2025-02-28

Perfect Mill-Direct Pricing on API 5L X60 for EPC Client

As a trading company supplying an EPC contractor in Southeast Asia, we sourced 120 tons of API 5L X60 PSL2 LSAW welded pipe, OD 610mm, wall thickness 14.3mm, with FBE internal coating. The mill-direct pricing allowed us to remain competitive while maintaining healthy margins. Full documentation package included EN 10204 3.1 MTCs, hydrostatic test reports, dimensional inspection reports, and coating inspection records — everything the EPC QA team required for their ITP. Delivery to Singapore port was completed in 34 days. The technical team provided weld procedure qualifications and material traceability records without additional requests. This is our fourth order through this supplier and the consistency has been excellent.

Carlos Silva

Brazil

2025-03-22

Reliable ASTM A53 Welded Pipe Supply for Structural Use

Ordered 35 tons of ASTM A53 Gr.B ERW welded pipe, OD 168.3mm, wall thickness 7.11mm, for structural column applications in a São Paulo industrial facility. Material quality was consistent and the yield strength data on the MTCs averaged 265 MPa, comfortably above the 240 MPa minimum. Pricing was competitive compared to local Brazilian distributors. Delivery to Santos port took 28 days. Communication during order processing was clear and the quotation was returned within 24 hours as stated. One minor note: the packing list had a small labeling discrepancy on two bundles, though the actual pipe dimensions were correct. The issue was acknowledged and corrected documentation was sent promptly.