Contact us for the Latest SSAW Steel Pipe Specifications and Dimensions.
Large Diameter Spiral Submerged Arc Welded Pipe | API 5L X42 X65 ASTM A252 Grade 3 SSAW Structural Steel Pipe Supplier in China
SSAW steel pipes range in diameter from 219 mm to 3000 mm, with wall thickness and length customizable to customer requirements. They are widely used in foundation piling, bridge construction, marine engineering, industrial structures, and piping systems. Large-diameter specifications provide a variety of solutions for projects requiring high load-bearing capacity and long service life.
Royal Steel Group is a leading exporter and manufacturer of high-quality API, EN, JIS, and ASTM seamless steel pipes, welded steel pipes, and PKB steel pipes, with over 10 years of international steel supply experience. The company's products are used by numerous customers in the Americas, Middle East, Southeast Asia, and Africa for infrastructure, energy, and industrial development projects.
Key Features
Manufactured according to API 5L, ASTM, and international standards.
Multiple diameter sizes available for structural and piping applications.
High strength, excellent weld quality, and tight dimensional tolerances.
Available in grades B, X42, X52, X60, X65, and X70.
Customizable lengths, diameters, and wall thicknesses.
Coating options include 3PE, FBE, coal tar epoxy, and galvanizing.
Suitable for onshore and offshore projects.
Why Choose Royal Steel Group
High production capacity and stable supply chain
To be in compliance with API & Quality Inspection is strict
Support of SGS, BV and inspection of the third party
Full technical and documentation support for the export
Competitive pricing and reliable delivery
Professional service teams for customers around the world
Manufacturing Process: Spiral submerged arc welded steel pipe
Applications: Used for low-pressure transportation of water, oil, and other liquids, as well as in building and piping engineering.
Standards: ASTM A252, EN10217-1, 2, 5, EN10219-1, BS, JIS, IS
Certifications: EN10217, EN10219, API 5L PSL1/PSL2, API 5CT
Outer Diameter: 219.1 mm – 3048 mm (8″-120″)
Wall Thickness: 4 mm – 30 mm
Specifications: 10×4, 8×4, 10×6, 8×6, 6×4
Length: 3 – 70 meters
Standards: API 5L, API 5CT, ASTM A252, ASTM 53, EN10217, EN10219, BS 5950, ASTM A572, JIS, IS
Steel Grades
API 5L: GR A, GR B, X42, X46, X56, X60, X65, X70
ASTM A252: GR 1, GR 2, GR 3
ASTM A53: GR A, GR B, GR C, GR D
BS 4360: Class 43, Class 50
EN: S275, S275JR, S355JRH, S355J2H
Surface Treatment: Fusion-bonded epoxy coating, coal tar epoxy coating, 3PE coating, varnish coating, asphalt coating, black oil coating (customizable according to customer requirements)
Testing Items: Chemical composition analysis, mechanical properties (tensile strength, yield strength, elongation), technical properties (flattening test, bending test, impact test), dimensional inspection, hydrostatic test.
Factory Test Certificate: EN10204 3.1
| NPS | O.D. (mm) | WT (mm) | Weight (kg/m) |
| DN300 | 323.9 | 6 | 46.9 |
| 323.9 | 8 | 62.1 | |
| 323.9 | 10 | 76.7 | |
| DN400 | 406.4 | 6 | 59.7 |
| 406.4 | 8 | 79.1 | |
| 406.4 | 10 | 97.8 | |
| DN500 | 508 | 6 | 74.8 |
| 508 | 8 | 99.1 | |
| 508 | 10 | 122.9 | |
| DN600 | 610 | 6 | 90.1 |
| 610 | 8 | 119.4 | |
| 610 | 10 | 148.1 | |
| DN800 | 813 | 8 | 159 |
| 813 | 10 | 197.6 | |
| 813 | 12 | 235.3 | |
| DN1000 | 1016 | 8 | 199.3 |
| 1016 | 10 | 247.8 | |
| 1016 | 12 | 295.5 | |
| DN1200 | 1219 | 10 | 298.2 |
| 1219 | 12 | 355.8 | |
| 1219 | 14 | 412.4 |
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SMLS Steel Pipe
LSAW Steel Pipe
ERW Steel Pipe
These large-diameter welded steel pipes are designed for heavy infrastructure and deep foundation engineering, providing exceptional load-bearing capacity, ground stability, and structural durability in harsh environments.
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Professional Export Packaging and Services
Export packaging isn't always uniform, but it's closely related in practice, especially if you're packaging goods for export.
Royal Steel Group provides high-quality, efficient export packaging for SSAW steel structural pipes used for transport and storage.
Bundles of steel pipes are tightly bundled with steel straps.
Plastic caps are provided to protect the pipe ends.
Waterproof packaging and sleeves/cartons are available upon request.
Steel pipes of different sizes, grades, heat numbers, and item numbers are all marked differently!
Large diameter steel pipes are placed on wooden or steel frames to maintain their roundness.
Packaging suitable for container, bulk carrier, and dry bulk transport to meet your needs.
(During loading and unloading, use a surface protective film to protect the steel pipes (3PE, FBE, galvanized SSAW steel pipes) to avoid damaging the coating.)
Shipping Options
Royal Steel Group offers flexible logistics solutions for global projects.
Container Shipment
Suitable for small and medium-sized diameters and standard pipe lengths.
20GP Container
40GP Container
40HQ Container
Breakbulk Vessel
Recommended for large-diameter SSAW pipes and oversized project cargo.
Cost-effective for bulk orders
Suitable for long pipes and heavy structures
Direct delivery to project ports
Bulk Cargo Transportation
Ideal for large-volume infrastructure, marine, and piling projects.
Efficient loading and unloading
Reduced transportation costs for large quantities
1. What is the SSAW Steel Structure Pipe?
It is spiral submerged arc welded pipe which is formed by cold rolling from steel coils, suitable for large-diameter structural and infrastructure works with cost advantage.
2.What standards you can offer from Royal Steel Group?
SSAW pipes we manufacture are in conformity with API 5L, ASTM, EN and GB specifications, also we can provide custom specifications to meet your requirements.
3.What pipe sizes are there?
OD 219-3000mm, Thickness 5-32mm, Length Max 18m; Custom size can be negotiated.
4.What grades are available?
We offer common API, ASTM and Chinese carbon steel grades, and additional grades can be supplied if required.
5.Are there pipe coatings?
Several anti-corrosion coatings, such as 3PE, FBE and Galvanization can be provided for different working conditions.
6.What are the applications of SSAW Steel Structure Pipes?
Extensively in piling, bridges, marine projects, oil / gas, water conveyance and city infrastructure.
7.Did Royal Steel Group provide inspection certificates?
Complete mill test certificates and third party inspection reports of SGS, BV, TUV and etc.
8.Why Royal Steel Group?
We are professional with over 10 years export experience, prompt and steady supply, competitive price, customized production and complete document supporting for global projects.
Contact Details
Address
Kangsheng development industry zone,
Wuqing district, Tianjin city, China.
Phone
Hours
Monday-Sunday: 24-hour Service
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