ASTM A106 Seamless Carbon Steel Pipes wholesales bulk supply from China steel pipes factory

Seamless Steel Pipe

• OD: 6-710 mm or customized
• Wall Thickness (WT): SCH 10, SCH 40, SCH 80, SCH 160, SCH XXS (Up to 60mm)
• Length: According to your requirements
• End Finish: Beveled Ends (for welding), Plain Ends, or Threaded & Coupled.
• Surface Treatment: Black Painting, Anti-rust Oil, Hot-dip Galvanized, 3PE Coating, or FBE Coating.
• Service: Matching Fittings & Flanges Available

Seamless Steel Pipe (SMLS) – High-Performance Carbon & Alloy Solutions

JS FITTINGS is a premier manufacturer and global supplier of high-grade Seamless Steel Pipes (SMLS). Engineered to withstand high pressure, extreme temperatures, and mechanical stress, our pipes are the preferred choice for oil and gas, petrochemical, power generation, and structural engineering projects.

For stockists and distributors, we offer a stable supply chain, mill-direct pricing, and comprehensive inventory management to ensure your projects never face delays.

Technical Standards & Material Grades

We strictly adhere to international quality protocols. Our pipes are manufactured to meet and exceed the following global standards:

Standard

Description

Common Grades

ASTM A106

Standard for high-temperature service

Grade B, Grade C

ASTM A53

General usage for steam, water, gas, and air lines

Grade B

API 5L

Line pipe for the petroleum and natural gas industries

Grade B, X42, X52, X60, X65, X70 (PSL1 & PSL2)

ASTM A333

Low-temperature service piping

Grade 1, Grade 6

DIN/EN

European standards for pressure and structural use

S235JR, S355JR, P235GH, P265GH

The most common specification for seamless carbon steel pipe is A106B

The most common specification for seamless stainless steel pipe is A312.

Stainless steel pipes can withstand high temperatures and corrosive environments.

Comprehensive Size Range & Specifications

Our production facility is equipped to handle both standard and custom requirements:

• Outer Diameter (OD): 6-710 mm or customized
• Wall Thickness (WT): SCH 10, SCH 40, SCH 80, SCH 160, SCH XXS (Up to 60mm)
• Length: According to your requirements
• End Finish: Beveled Ends (for welding), Plain Ends, or Threaded & Coupled.
• Surface Treatment: Black Painting, Anti-rust Oil, Hot-dip Galvanized, 3PE Coating, or FBE Coating.

Applications & Industries

• Energy Sector: Pipeline transportation of crude oil and natural gas.
• Refining & Petrochemical: Heat exchangers, boilers, and high-pressure fluid transport.
• Construction: Structural columns and high-rise foundation piling.
• Mechanical: Hydraulic cylinders and precision automotive components.

Standard

GB standard

Seamless steel pipe for structural purposes

GB/T8162-2008

Seamless steel pipe for liquid service

GB/TB8163-2008

Seamless steel tubes for low and medium-pressure boilers

GB/3087-1999

Seamless steel tubes for high-pressure boilers

GB/5310-1995

Seamless carbon steel marine tubes

GB/T5312-1999

High-pressure seamless steel tubes for chemical fertilizer equipment

GB/6479-2000

ASTM standard

Black and hot-dipped zinc-coated steel pipes are welded and seamless

ASTM A53

Seamless carbon steel for high-temperature service

ASTM A106

Seamless cold-drawn low-carbon steel heat exchanger and condenser tubes

ASTM A179

Seamless carbon steel boiler tubes for high pressure

ASTM A192

Seamless Medium-carbon boiler and superheater tubes

ASTM A210

Seamless carbon for mechanical tubing

ASTM A519

API standard

Seamless steel pipe for casing

API Spec 5CT

Seamless steel pipe for line pipe

API Spec 5L

DIN standard

Seamless steel tube for elevated temperature

DIN 17175

Cold-drawn seamless precision pipe

DN2391

Seamless circular unalloyed steel tubes subject to special requirements

DIN 1629

Why Partner with JS FITTINGS?

As a professional B2B partner, we understand that reliability is more than just product quality. It’s about the details that protect your reputation:

• 100% Traceability: Every single pipe is marked with heat numbers, standards, and sizes. We provide full Mill Test Certificates (MTC) according to EN 10204 3.1 with every shipment.
• Zero-Defect Quality Control: Our QC team performs Hydrostatic Testing, Ultrasonic Testing (UT), Eddy Current Testing, and X-ray inspection to ensure no hidden cracks or wall thinning.
• Project-Ready Packaging: We use heavy-duty steel strapping for bundles, plastic end caps to protect bevels, and seaworthy wooden crates for thin-walled pipes to prevent transit damage.
• Inventory Support: We maintain a revolving stock of standard ASTM A106 and API 5L pipes to support urgent “just-in-time” requirements for our global distributors.

Our Strength

1. 30,000-ton production capacity guarantee | Stable supply of large-scale project needs

2. Dual-standard certified steel pipes | API 5L + EN 10219 dual Compliance assurance

3. Precision Cutting Services | Ready-to-use pipe end treatments

4. Oil and Gas Project Logistics System | Exclusive Shipping Solutions Covering Central Asia/Middle East

The main difference between seamless and ERW pipe is that a seamless steel pipe is produced without the help of welds or seams; however, ERW steel pipes are manufactured by welding pieces of steel longitudinally.