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Steel Factory

Steel Solutions For A
Stronger World

With 16 years of export experience, we specialize in manufacturing stainless steel seamless pipes, supplying steel sheets and coils, carbon steel pipes, and integrating steel resources for global markets.

About Guanco

With over 16 years of experience in the steel industry, Wenzhou Guanco Technology Co., Ltd has become a trusted name in global steel supply and manufacturing.

Company Profile

Guanco provides customers with more satisfactory products and services. As a leader in steel resource integration, we empower you to replenish your inventory or bid for projects with confidence.

Our mission is to deliver cost-effective, reliable steel solutions with safe, on-time delivery across international markets.

  • 16+ Years Export Experience
  • Global Distribution Network
  • Integrated Steel Resources
  • ISO-Certified Quality Control
Guanco Factory

Strength you can rely on, every pipe, every time.

Product Center

Discover premium-quality steel products built for durability, precision, and performance—perfect for your toughest industrial applications.

Stainless Steel Seamless Pipe

Stainless Steel Seamless Pipe

High-strength, corrosion-resistant seamless pipes ideal for high-pressure environments.

  • Material: 304, 316L, 321, etc.
  • OD: 6mm - 630mm
  • Standards: ASTM, ASME, GB, JIS
Carbon Steel Pipe

Carbon Steel Pipe

Durable and cost-effective pipes for structural and mechanical applications.

  • Material: A106, A53, API 5L, etc.
  • Size: 1/2" to 48"
  • Applications: Oil & Gas, Construction
Stainless Steel Plate

Stainless Steel Plate/Sheet/Coil

Precision-rolled flat products with excellent surface finish and mechanical properties.

  • Grades: 304, 316, 430, 201, etc.
  • Thickness: 0.3mm - 100mm
  • Finishes: 2B, BA, No.4, HL
Alloy Steel Pipe

Alloy Steel Pipe

Engineered for high-temperature and high-pressure industrial systems.

  • Materials: P11, P22, T91, etc.
  • Used in Power Plants & Petrochemical
  • Heat-resistant & oxidation-resistant
Welded Stainless Pipe

Welded Stainless Steel Pipe

High-quality welded pipes with consistent weld integrity and dimensional accuracy.

  • ASTM A312, A778 Standards
  • Available in Longitudinal & Spiral Weld
  • Polished & Pickled Finishes
Line Pipe

API Line Pipe

API 5L certified pipes for pipeline transportation in oil, gas, and water industries.

  • Grades: B, X42, X52, X60, X70
  • Coating: FBE, 3LPE, 3LPP
  • Length: 6m, 12m, or Custom
Steel Fittings

Steel Pipe Fittings

Comprehensive range of elbows, tees, reducers, and flanges for seamless connections.

  • Materials: Carbon & Stainless Steel
  • Standards: ANSI, DIN, JIS
  • Types: Seamless & Welded
Industrial Tubing

Precision Industrial Tubing

Tight tolerance tubing for automotive, aerospace, and instrumentation applications.

  • OD: 3mm - 100mm
  • High Surface Finish
  • Hydrostatic & Eddy Current Tested

Quality & Service Control

We ensure top-notch quality through rigorous inspections, advanced testing methods, and strict adherence to international standards.

Quality Inspection

Our Quality Commitment

  • Advanced Testing: Eddy current, hydrostatic, ultrasonic, and PMI testing on every batch.
  • Certifications: ISO 9001, API 5L, PED, and other international standards compliance.
  • Traceability: Full material traceability with detailed inspection reports for every shipment.
  • Long-term Records: Shipment records accessible for up to three years.

16+

Years Export Experience

50+

Countries Served

100%

Inspection Rate

24/7

Customer Support

Meet Us Here

Join us at international trade shows and industry events to discuss your steel needs and explore partnership opportunities.

Tube Dusseldorf 2026

Germany

April 13–17, 2026

The world’s leading trade fair for the tube and pipe industry.

Metal-Expo 2025

St. Petersburg, Russia

November 11–14, 2025

Booth: Hall H, 5F62
Peterburgskoye Shosse, 64/1

Tubotech 2025

São Paulo, Brazil

October 29–31, 2025

South America’s premier tube technology exhibition.

Contact Guanco

Supporting you from China to worldwide. Reach out for inquiries, quotes, or technical support.

Global Offices

Guanco Headquarters, China

8F, Building B2, No.2999, Nanyang Avenue, Wenzhou City, China 325024

Phone: +86 577 8660 6688

North American Guanco Steel Inc, USA

Texas

Phone: +1-626-861-7355

Wuxi Office (Stainless Steel Sheet & Coil), China

No.4, Building A, No.118 Beihuang Rd, Wuxi City, China

Phone: +86-181-1537-2630

Shandong Office (Carbon Steel Pipe), China

Room 302, No.228, Liaohe Rd, Liaocheng City

Phone: +86-180-6626-5189

Sales for CIS Market

Phone: +7-915-121-5619

Plant Location

Lidun Industrial Park, Zhouning County, Ningde City, Fujian, China

Phone: +86-153-5592-0679

Get in Touch

+86 577 8660 6688

For all inquiries, please visit the official website to submit your request or connect with our sales team directly.

Visit Official Website to Contact

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