Top Large Diameter Spiral Steel Pipe Manufacturers in China

China is a global leader in large diameter spiral steel pipe production, supplying high-quality pipes for oil & gas, water transmission, piling, and structural applications. Below is 

the top Chinese manufacturer and its key advantages for international buyers.

1. Key Chinese Manufacturer of Large Diameter Spiral Steel Pipes

Hunan Sunrise Steel Group 

Core Advantages:

Wide Diameter Range: Produces Φ219mm to Φ3500mm spiral pipes.
High-Standard Materials: Uses API 5L, ASTM A252, EN 10219 compliant steel.
Advanced Welding Tech: SAW (Submerged Arc Welding) ensures strong, defect-free seams.
Global Exports: Ships to Saudi Arabia, UAE, Europe, and Africa.
Thick-Wall Capability: Specializes in 8mm–25mm wall thickness pipes.
Anti-Corrosion Options: Offers 3PE coating, galvanized, and FBE for harsh environments.
Strict QC: 100% ultrasonic testing (UT) & X-ray inspection for defect-free pipes.
Fast Delivery: 30,000+ tons/month capacity with 15-30 days lead time.
Large Stock Inventory: Ready-to-ship API 5L X42-X80 pipes.
Customization: Cuts, bevels, and flanges per client specs.
Competitive Pricing: Direct factory supply, no middlemen.
Certifications: ISO 9001, CE, BV, SGS certified.


2. Why Choose Hunan Sunrise Steel Group as Spiral Pipe Suppliers?

 Cost-Effective: Lower production costs than US/EU suppliers.
 High Production Capacity: China makes 60%+ of global spiral pipes.
 Strict Quality Control: Third-party inspections (SGS/BV/TUV) available.
 Custom Solutions: Tailored lengths, coatings, and end finishes.
 Fast Logistics: Major ports (Tianjin, Shanghai, Qingdao) ensure smooth exports.


3. Applications of Large Diameter Spiral Pipes
Oil & Gas Pipelines (API 5L compliant)
Water Transmission (AWWA C200 standard)
Piling & Construction (ASTM A252 Grade 2/3)
Structural Supports (EN 10219 for buildings/bridges)


4. How to Order from Hunan Sunrise Steel Group?
Step 1: Send your pipe specs (diameter, thickness, length, coating).
Step 2: Get a free quote & production timeline.
Step 3: Confirm order with inspection & shipping terms.
Step 4: Receive pipes with full documentation (MTC, QC reports).

5. Looking for a Reliable China Spiral Pipe Supplier? 

Contact Us Now for Best Prices & Fast Delivery!
Email: info@sunrisesteelgroup.com
Whatsapp:008613875806221