Contact us for the Latest SSAW Steel Pipe Specifications and Dimensions.
Customized SSAW Steel Structure Pipe Manufacturer in China | Large Diameter Spiral Welded Steel Pipe Supplier
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
Large diameter range for structural and pipeline applications
High strength, excellent weld quality, and dimensional accuracy
Available in Grade B, X42, X52, X60, X65, and X70
Custom lengths, diameters, and wall thicknesses available
Coating options including 3PE, FBE, coal tar epoxy, and galvanized
Suitable for both onshore and offshore projects
Why Choose Royal Steel Group
Large production capacity and stable supply chain
API-compliant manufacturing and strict quality inspection
SGS, BV, and third-party inspection support
Complete export documentation and technical assistance
Competitive pricing with reliable delivery schedules
Professional service teams supporting global customers
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
Royal Steel Group provides high-performance export packaging for SSAW steel structural pipes to meet transportation and storage requirements.
High-strength steel strapping for pipe bundles
Plastic end caps for pipe end protection
Waterproof packaging and protective covers available upon request
Unique markings for dimensions, grades, furnace numbers, and project information
Large diameter pipes supported by wooden or steel frames
Suitable for container, bulk carrier, and dry bulk shipping
Surface protection for coated pipes (e.g., 3PE, FBE, galvanized SSAW pipes) to prevent coating damage during loading and unloading
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 an SSAW Steel Structure Pipe?
It’s spiral submerged arc welded pipe rolled from steel coils, ideal for large-diameter structural and infrastructure works with cost advantages.
2.What standards can Royal Steel Group supply?
We produce SSAW pipes complying with API 5L, ASTM, EN and GB standards, and accept custom specs for projects.
3.What pipe sizes are available?
OD 219–3000mm, wall thickness 5–32mm, max length 18m; bespoke sizes are negotiable.
4.What grades are available?
We supply mainstream API, ASTM and Chinese carbon steel grades, with extra grades available on demand.
5.Can you provide pipe coatings?
Multiple anti-corrosion coatings like 3PE, FBE and galvanization are offered to match different working environments.
6.What applications are SSAW Steel Structure Pipes suitable for?
Widely applied in piling, bridges, marine projects, oil/gas, water transport and municipal infrastructure.
7.Can Royal Steel Group provide inspection certificates?
Full mill test certificates and third-party inspection reports from SGS, BV, TUV etc. are all available.
8.Why choose Royal Steel Group?
We own over 10 years’ export experience with steady supply, favorable prices, custom production and full document support 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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