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Premium Seamless Carbon Steel Pipes
Manufactured in China

Professional manufacturer and supplier of high-quality seamless, welded, galvanized, and coated steel pipes and fittings. Trusted by global industries for durability, precision, and compliance with ASTM, API, JIS, and ASME standards.

4000+ Technical Experts

Skilled workforce ensuring precision in every production phase.

152 International Awards

Recognized excellence in quality and innovation.

365 Daily Shipments

Reliable global logistics and on-time delivery.

About WANLEI Steel

Tianjin Wanlei Steel Pipe Co., Ltd. is a leading manufacturer and exporter of steel pipes and pipe fittings based in China. With decades of experience, we specialize in seamless carbon steel pipes, ERW, SSAW, LSAW, galvanized, and coated pipes for diverse industrial applications.

Our featured products include custom-diameter pipes (318mm, 216mm, 254mm), cold-drawn and hot-expanded steel pipes, and large-diameter seamless pipes from 609.6mm to 1020mm. We also offer hollow sections in customized sizes to meet unique project needs.

ISO & API Certified Manufacturing
Custom Fabrication & Processing Services
Global Export to 80+ Countries
WANLEI Steel Factory

See Our Production Process

Watch how seamless carbon steel pipes are manufactured with precision and quality control at every stage in our state-of-the-art facility.

Production Video Thumbnail

Our Products

Explore our comprehensive range of seamless carbon steel pipes, corrosion-resistant pipes, fittings, and processing services. All products meet international standards including ASTM, API, JIS, and ASME.

A106 Seamless Steel Pipe

A106 Seamless Steel Pipe

ASTM A106 Gr.A/B/C – High-temperature service pipes for oil, gas, and petrochemical industries.

  • Standards: ASTM A106
  • Diameter: 1/8" to 48"
  • Applications: Fluid transport under high pressure
ASTM A53 Galvanized Pipe

ASTM A53 Galvanized Seamless Pipe

Corrosion-resistant galvanized coating ideal for structural and mechanical applications.

  • Grade: Gr.B
  • Coating: Hot-dip galvanized
  • Use: Construction, scaffolding, fencing
API 5L Seamless Pipe

API 5L Seamless Steel Pipe

Line pipe for pipeline transportation systems in oil, gas, and water industries.

  • Grades: B, X42, X52, X60, X70
  • Standard: API 5L
  • End: Plain, beveled, threaded
JIS G3466 Square Pipe

JIS G3466 Square Steel Pipe

Structural square and rectangular hollow sections for construction and engineering.

  • Standard: JIS G3466
  • Shape: Square & Rectangular
  • Use: Building frames, supports, machinery
ASTM A500 Welded Pipe

ASTM A500 Structural Welded Pipe

Cold-formed welded carbon steel tubing for structural applications.

  • Grades: A, B, C, D
  • Shape: Round, square, rectangular
  • Applications: Bridges, buildings, towers
3LPE Coated Pipe

3LPE & FBE Coated Steel Pipe

Triple-layer polyethylene and fusion-bonded epoxy coatings for superior corrosion protection.

  • Coating: 3LPE, FBE, 2LPP
  • Use: Underground pipelines, marine environments
  • Thickness: 1.8–3.7 mm
Carbon Steel Pipe Fittings

Carbon Steel Pipe Fittings

Butt-welding tees, reducers, elbows, flanges, and socket weld fittings.

  • Standards: ASME B16.9, B16.11
  • Materials: ASTM A234 WPB, WPC
  • Ends: Beveled, threaded, socket
Low-Temperature Elbow

ASME B16.11 Low-Temp Elbow

Forged carbon steel elbows made from ASTM A350 LF2 and A420 WPL6 for cryogenic use.

  • Angle: 90°, 45°
  • Standard: ASME B16.11
  • Use: LNG, refrigeration, arctic conditions

Why Choose WANLEI?

We deliver unmatched quality, service, and reliability in the steel pipe industry.

Excellent Product Quality

We focus on every detail from raw material selection to final shipment. Our quality control ensures compliance with international standards and customer specifications.

One-Stop Purchasing

Find seamless pipes, welded pipes, fittings, coatings, and processing services all in one place. Streamline your procurement and reduce lead times.

Dedicated After-Sales Support

Our sales and after-sales team is based at the factory to provide prompt responses, technical data, and timely service throughout your project lifecycle.

4000+
Technical Personnel
152
International Awards
365
Daily Shipments Worldwide

Frequently Asked Questions

What is the difference between seamless and welded steel pipes?

Seamless pipes are formed without a seam, offering higher strength and pressure resistance. Welded pipes are made by rolling steel plates and welding the seam, typically used for lower-pressure applications.

Can you customize pipe dimensions?

Yes, we offer custom diameters including 216mm, 254mm, 318mm, and large seamless pipes from 609.6mm to 1020mm. Custom lengths and wall thicknesses are also available.

What coatings do you offer?

We provide 3LPE, FBE, epoxy zinc yellow, internal/external coatings, and hot-dip galvanizing for corrosion protection in harsh environments.

Do you provide processing services?

Yes, we offer cutting, bevelling, threading, welding, and bending services to meet your project requirements.

What are your main export markets?

We export to over 80 countries including the USA, Canada, Russia, UAE, Saudi Arabia, Brazil, Australia, and Southeast Asia.

Get in Touch

Contact our sales team for technical data, quotes, and project support. We’re available 24/7 to assist you.

Contact Information

Phone: +86-22-65815991

Email: [email protected]

Mobile: +86-18526839451 / +86-18526839452

Fax: +86-22-25343802

Website: seamlesscarbonsteelpipess.com

Visit Official Website to Contact

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