Description
Large Diameter SSAW Spiral Welded Steel Pipe
As a premier supplier of Large Diameter SSAW Spiral Welded Steel Pipe, Sino East Steel Group delivers industrial-grade solutions engineered for global construction, infrastructure, and manufacturing projects. Our products are manufactured under strict international standards to guarantee consistent mechanical properties across every shipment.
1. Product Overview & Applications
Spiral submerged arc welded (SSAW) steel pipes for water mains, piling, and structural casing. This product is widely used in structural frameworks, mechanical fabrication, and heavy industrial assembly. Sino East Steel Group serves contractors and distributors in over 60 countries with reliable container-load shipments from our Tianjin production base.
2. Technical Specifications
| Parameter | Value |
|---|---|
| OD Range | 219mm – 3048mm |
| Wall Thickness | 6mm – 25mm |
| Standard | AWWA C200, ASTM A252 |
3. Quality Control & Testing
Every batch dispatched from Sino East Steel Group undergoes rigorous verification:
- EN 10204 3.1 Mill Test Certificate (MTC) — Chemical composition and mechanical properties verified for every heat number.
- 100% Dimensional Inspection — Laser measurement to ensure compliance with ASTM/EN tolerances.
- Surface & Coating Check — Visual and gauge-based verification of zinc thickness, paint adhesion, or oiling uniformity.
- Third-Party Friendly — SGS, Bureau Veritas (BV), or TÜV SÜD inspector auditing available at loading ports.
4. Packaging & Container Logistics
Sino East Steel Group optimizes every container to minimize your landed cost per ton:
- 20GP Container: Maximum loading 25-27 tons for standard lengths.
- 40HC Container: Accommodates longer items, up to 26 tons.
- Surface Protection: Anti-rust oil, protective varnish, or HDG passivation to prevent maritime salt-spray corrosion.
- Port of Loading: Xingang Port, Tianjin — daily vessel schedules to major global hubs.
5. B2B Wholesale FAQ
What is your Minimum Order Quantity (MOQ)?
Our standard MOQ is 10-25 tons per size specification. For stock dimensions, we accept mixed-container loads and smaller trial orders starting from 1 ton.
What international payment terms do you accept?
We support 30% T/T deposit + 70% against copy of Bill of Lading (B/L), or 100% Irrevocable Letter of Credit (L/C) at sight.
Do you provide MTC 3.1 certificates with every shipment?
Yes. Each shipment includes an EN 10204 3.1 Mill Test Certificate detailing the heat number, chemical analysis, and mechanical test results. Third-party SGS/BV inspection reports are also available upon request.
⚡ Fast Large Diameter SSAW Spiral Pipe Quote Summary
FOB Price Benchmark: $590 – $780 / Metric Ton | Size Range: DN200 to DN3000 (8″ to 120″ OD / 219mm to 3048mm) | Wall Thickness: 5.5 mm to 25.4 mm | Standards: AWWA C200, API 5L (Gr. B to X70), ASTM A252, EN 10219 | Anti-Corrosion: FBE (≥250µm), 3PE, 3PP, Coal Tar Epoxy, Cement Lining | Port: Tianjin Xingang, China.
1. SSAW Large Diameter Spiral Welded Steel Pipe Dimension & Weight Chart
Manufactured using double-sided submerged arc welding (DSAW) technology for municipal water transmission, piling, and oil/gas pipeline projects:
| Nominal Diameter (DN) | Outside Diameter (OD) | Standard Wall Thicknesses | Weight Range (kg/m) | Weight / 6m Piece | Hydrostatic Test Pressure |
|---|---|---|---|---|---|
| DN400 (16″) | 406.4 mm | 6.0 / 8.0 / 10.0 mm | 59.2 – 97.8 kg/m | 355 – 587 kg | Up to 12.5 MPa (125 bar) |
| DN600 (24″) | 610.0 mm | 7.0 / 9.0 / 12.0 mm | 104.1 – 177.0 kg/m | 625 – 1,062 kg | Up to 10.0 MPa (100 bar) |
| DN800 (32″) | 813.0 mm | 8.0 / 10.0 / 14.0 mm | 158.8 – 275.8 kg/m | 953 – 1,655 kg | Up to 8.5 MPa (85 bar) |
| DN1000 (40″) | 1016.0 mm | 10.0 / 12.0 / 16.0 mm | 248.1 – 394.6 kg/m | 1,489 – 2,368 kg | Up to 7.5 MPa (75 bar) |
| DN1200 (48″) | 1220.0 mm | 12.0 / 14.0 / 16.0 mm | 357.5 – 475.1 kg/m | 2,145 – 2,851 kg | Up to 6.5 MPa (65 bar) |
| DN1600 (64″) | 1620.0 mm | 14.0 / 16.0 / 20.0 mm | 554.4 – 789.2 kg/m | 3,326 – 4,735 kg | Up to 5.0 MPa (50 bar) |
2. Anti-Corrosion Coating & End Finishing Solutions
- Fusion Bonded Epoxy (FBE): Single/dual layer internal and external FBE coating (250–500 microns) per AWWA C213 and API RP 5L2 for potable water and natural gas lines.
- 3-Layer Polyethylene (3PE / 3PP): Heavy-duty external anti-corrosion layer (2.5–3.7mm) per DIN 30670 / ISO 21809 for buried pipelines.
- End Types: Plain bevelled ends for butt welding (30°–35°), Double spigot & socket ends with rubber O-ring gaskets, or welded flange ends.
- Certifications: MTC EN 10204 3.1, 100% X-ray weld inspection, Ultrasonic testing, Hydrostatic pressure certificates.
B2B Procurement FAQ — SSAW Spiral Welded Steel Pipe
Q1: What standards and diameters are manufactured at your Tianjin mill?
A: Sino East Steel manufactures SSAW spiral welded steel pipes from DN200 to DN3000 (219 mm to 3048 mm OD) with wall thicknesses from 5.0 mm to 25.4 mm per API Spec 5L (Gr. B through X70), AWWA C200 (Water Transmission), and ASTM A252 Grade 2/3 (Steel Pipe Piles).
Q2: What anti-corrosion coating systems are applied for underground and marine pipelines?
A: We operate full in-house coating lines for 3-Layer Polyethylene (3PE per DIN 30670), Fusion Bonded Epoxy (FBE / Dual FBE), Liquid Epoxy Lining (AWWA C210), and Cement Mortar Lining (AWWA C205).
Q3: How are large diameter spiral pipes shipped from Tianjin Xingang Port?
A: Pipes under 24″ OD are shipped in 40HQ/40GP containers (up to 11.8m length). Large pipes (DN700 to DN3000) are shipped via Breakbulk Bulk Vessels with specialized vessel hold nesting and rubber-padded stanchions directly from Tianjin Xingang Port (45 km from factory).
⚡ Quick RFQ & Instant CIF Quotation
Inquiring about Large Diameter SSAW Spiral Welded Steel Pipe? Contact our export engineering team for 2026 FOB/CIF pricing, MTC 3.1 certificates, and 20GP container loading calculations.
