shengtian
Straight Seam Pipe
(ERW / LSAW)
From galvanized strip to finished pipe,
with anti-corrosion, insulation, and coating —
we offer full-chain processing and fast delivery.
All standard sizes in stock
7 factories, 80+ warehouses
Global export, long-term partnership
shengtian
Straight Seam Welded Pipe
We are a full-chain welded pipe manufacturer with over 7 production bases and 80+ warehouses worldwide.
From steel coils to finished pipes — we offer complete in-house production for quality and consistency.
Standards: API 5L, ASTM A252, EN 10217, GB/T 9711, and more.
Coating options include epoxy, bitumen, 3PE, and FBE for corrosion protection.
✔ Smooth welding seam & accurate dimensions
✔ In-stock supply, fast delivery, competitive price
✔ Sizes from DN15 to DN2000 available
Looking for long-term partners in steel structure, piling, water, gas, and infrastructure projects.
If you complete the form below we will contact you as soon as possible.
shengtian
Straight Seam Welded Pipe
We are a full-chain welded pipe manufacturer with over 7 production bases and 80+ warehouses worldwide.
From steel coils to finished pipes — we offer complete in-house production for quality and consistency.
Standards: API 5L, ASTM A252, EN 10217, GB/T 9711, and more.
Coating options include epoxy, bitumen, 3PE, and FBE for corrosion protection.
✔ Smooth welding seam & accurate dimensions
✔ In-stock supply, fast delivery, competitive price
✔ Sizes from DN15 to DN2000 available
Looking for long-term partners in steel structure, piling, water, gas, and infrastructure projects.
Full-Chain Steel Pipe Manufacturer — From Strip to Coating
ERW / LSAW Pipes | Anti-Corrosion | Pre-Insulated | Steel-Plastic Composite
Full-Chain Steel Pipe Solutions
We provide ERW, SSAW, and LSAW steel pipes with complete in-house processing — from steel coil forming, high-frequency or arc welding, to anti-corrosion coating, insulation, and composite options.
✅Full size range, API/ASTM/EN/GB certified
✅7+ production bases, 300,000+ tons in stock
✅In-house 3PE, FBE, PU, and steel-plastic coating lines
✅Fast delivery & long-term EPC cooperation
Full-Chain Steel Pipe Manufacturer — ERW / LSAW / SSAWcturer
Integrated Solutions: Strip Coil to Finished Pipe + Coating & Logistics
01
Steel Pipe Manufacturing
We offer full in-house manufacturing of ERW, SSAW, and LSAW welded steel pipes.
Using galvanized strip coils or black steel with advanced welding and testing lines.
Diameter range: DN100 to DN3000
Standards: API 5L, ASTM A252, EN10219, GB/T9711
02
Surface Coating & Insulation
We provide anti-corrosion and insulation services for all pipe types, including:
3PE, FBE, bitumen, epoxy
PU foam insulation & steel-plastic composite pipe
Internal and external coating options available
Strict QC ensures long-term performance for harsh environments.
03
Scale & Stock
With over 7 production bases and 80+ warehouse sites worldwide, we maintain over 300,000 tons of steel pipes in stock.
We support bulk orders, fast lead times, and global logistics services.
🔘 All major sizes in stock
🔘 Long-term supply for global EPCs & contractors.
Welding Pipe Production
We produce ERW, SSAW & LSAW pipes up to 3000mm.
Full-chain process from steel coil to welded pipe.
Standards: API / ASTM / EN / GB.
Coating & Insulation
3PE, FBE, epoxy coating & PU insulation available.
In-house lines ensure fast lead time & strict QC.
Options: internal/external coating, pre-insulation.
Scale & Logistics
300,000+ tons in stock, ready to ship.
7 factories + 80 global warehouse sites.
Support bulk supply & long-term EPC service.
300,000+ Tons
Year-round inventory across all specs
7 Factory Bases
Full-process production, self-owned plants
80+ Warehouses
Global stock for fast local dispatch
100+ Countries
Long-term partners worldwide
What our customers say
Hear from our satisfied customers who have experienced the quality and value of our products and services.
Shengtian’s welding is reliable and the anti-corrosion layer performs consistently.
We’ve been sourcing from them for 3+ years without coating issues.
Jordan Smith
Their custom sizes and coatings save us time.
Support is fast and perfect for oil & gas projects.
Li Song
3000mm SSAW pipes were delivered on time with full reports.
Production capacity really impressed us.
Casey Williams
After comparing 5 suppliers, Shengtian’s coating and welding were the most stable.
We switched and never looked back.
Riley Brown
Stock is always available, even for large sizes.
Their logistics helped us hit every EPC deadline.
Morgan Davis
Coating, insulation, docs — everything runs smoothly.
Quick replies and always ships on schedule.
Cameron Miller
Cooperation Cases
What our customers say
Hear from our satisfied customers who have experienced the quality and value of our products and services.
Coating, insulation, docs — everything runs smoothly.
Quick replies and always ships on schedule.
Jordan Smith
Shengtian’s welding is reliable and the anti-corrosion layer performs consistently.
We’ve been sourcing from them for 3+ years without coating issues.
Li Song
3000mm SSAW pipes were delivered on time with full reports.
Production capacity really impressed us.
Morgan Davis
After comparing 5 suppliers, Shengtian’s coating and welding were the most stable.
We switched and never looked back.
Casey Williams
Frequently Asked Questions
Find answers to commonly asked questions about our products and services.
Do you keep stock for common pipe sizes?
Yes. We keep over 300,000 tons of spiral and straight seam pipes in stock, covering standard diameters and thicknesses. Ready for global shipping.
Are you a manufacturer or trading company?
We are a manufacturer with multiple production bases and coating lines. Direct factory prices and full quality control.
Can you produce customized sizes or coatings?
Yes. We offer custom diameters, wall thicknesses, and coatings like 3LPE, FBE, epoxy, and insulation.
How do your prices compare to other suppliers?
We offer competitive factory prices, especially for large orders. Our full-chain production helps control costs.
Which countries do you supply to?
We export to over 30 countries, including Southeast Asia, the Middle East, Africa, and Latin America.
What documents do you provide with shipments?
Standard documents include invoice, packing list, MTC, and inspection report. Others like COO, embassy certs, etc. are available upon request.
Straight Seam Welded Pipe
We are a full-chain galvanized pipe manufacturer with 7 production bases and 80+ warehouses worldwide.
Welcome to visit our factory — see our production lines in action, check real inventory, and discuss long-term cooperation face-to-face.
Let’s grow together with strength, scale, and trust.
Home
Full-chain manufacturer with 7 factories and 80+ warehouses worldwide.
Visit us to see the real production and inventory — let’s build long-term cooperation on trust and scale.
If you complete the form below we will contact you as soon as possible.
Contact Us
Here’s how you can contact us for any questions or concerns.
Address
No. 070, Group 4, Huwan Village, Qingyihu Town, Shuyang County, Suqian City, Jiangsu Province, 223600, China
Phone/WhatsApp/WeChat
+8618526263999
shengtianyonghe@gmail.com