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ASTM A500 Grade B/C SSAW Steel Pipe Manufacturer in China | Large Diameter 219-1626mm Spiral Welded Steel Pipe for Piling
| Product Parameter | Technical Specifications (ASTM A500 Grade B / Grade C) |
| Manufacturing Process | SSAW (Spiral Submerged Arc Welded) |
| Outer Diameter (OD) | 1/4" to 88" (13.7 mm – 2235 mm) / Customizable for project footprints |
| Wall Thickness (WT) | 1.65 mm to 25.4 mm (Schedule 10 to Schedule XXS) |
| Length Options | Fixed Lengths: 6.0m, 12.0m, 20 ft, 40 ft Single Random Length (SRL) & Double Random Length (DRL) Tailored lengths up to 18+ meters |
| Mechanical Properties | Round Pipe - Grade B: Yield Strength: Min. 42,000 psi (290 MPa) Tensile Strength: Min. 58,000 psi (400 MPa) Elongation: Min. 23%Round Pipe - Grade C: Yield Strength: Min. 46,000 psi (317 MPa) Tensile Strength: Min. 62,000 psi (427 MPa) Elongation: Min. 21% |
| Chemical Composition | Grade B: C ≤ 0.26%, Mn ≤ 1.35%, P ≤ 0.035%, S ≤ 0.035% Grade C: C ≤ 0.23%, Mn ≤ 1.35%, P ≤ 0.035%, S ≤ 0.035%(Optional: Copper Cu ≥ 0.20% for enhanced atmospheric corrosion resistance) |
| Dimensional Tolerances | Outside Diameter (OD): ±0.75% (for sizes ≥ 2 inches) Wall Thickness: ±10% of nominal thickness Straightness: ≤ 1/8" × (Total length feet / 5) |
| Surface Finishes & Anti-Corrosion | Bare/Black Oiled Surface Anti-Rust Varnishing / Black Painting Hot-Dip Galvanized (HDG) – Zinc weight up to 550g/m² Advanced Coatings: 3PE, FBE (Fusion Bonded Epoxy) |
| End Fabrications | Plain ends, Beveled ends, Welded end plates, Conical drive shoes, Backing rings, Drilled holes, and Lifting lugs |
| Quality Documentation | Mill Test Certificate (MTC) matching EN 10204 3.1, NDT (Ultrasonic/X-ray) Reports, and Third-Party Verification (SGS, BV, TUV, Intertek) |
Technical Data
ASTM A500 Steel Pipe Chemical Composition
| Element | Grade A (%) | Grade B (%) | Grade C (%) |
| Carbon (C), max | 0.26 | 0.26 | 0.23 |
| Manganese (Mn), max | 1.35 | 1.35 | 1.35 |
| Phosphorus (P), max | 0.035 | 0.035 | 0.035 |
| Sulfur (S), max | 0.035 | 0.035 | 0.035 |
| Copper (Cu), min ① | 0.2 | 0.2 | 0.2 |
ASTM A500 Steel Pipe Mechanical Property
| Grade | Tensile Strength (min) | Yield Strength (min) | Elongation in 2" (50mm), min |
| A | 45,000 psi (310 MPa) | 39,000 psi (269 MPa) | 25% |
| B | 58,000 psi (400 MPa) | 46,000 psi (315 MPa) | 23% |
| C | 62,000 psi (425 MPa) | 50,000 psi (345 MPa) | 21% |
| Common Export Specifications (Grade 3 Most Popular) | |||||
| NPS | OD (mm) | Wall Thickness | Weight (kg/m) | Typical Schedule | Primary Application |
| 16" | 406.4 | 0.375" (9.52mm) | 92.5 | STD | Port terminals, general construction |
| 16" | 406.4 | 0.500" (12.70mm) | 121.8 | 40 | Offshore wind foundations, bridge piers |
| 18" | 457 | 0.500" (12.70mm) | 137.4 | 40 | Heavy industrial structures, deep foundations |
| 24" | 609.6 | 0.500" (12.70mm) | 183.2 | 40 | Large diameter piles, marine structures |
| 24" | 609.6 | 0.750" (19.05mm) | 271.8 | XS | Ultra-heavy load applications, rock driving |
| 30" | 762 | 0.625" (15.88mm) | 287.5 | 40 | Offshore platforms, LNG terminal foundations |
| 36" | 914.4 | 0.750" (19.05mm) | 392.3 | 40 | Mega-projects, cross-sea bridges |
| Manufacturing Process vs. Size Capabilities | |||||
| Process | Max OD (mm) | Max WT (mm) | Length Range (m) | Cost Efficiency | Best For |
| SSAW (Spiral) | 3200 | 30 | 6-18 | Highest | Large diameter, medium wall thickness (16"-48") |
| LSAW (JCOE) | 1422 | 50 | 6-15 | High | Ultra-thick wall (≥1.0"), high strength requirements |
| ERW | 660 | 25 | 6-12 | Medium | Small to medium diameter, standard wall thickness |
| Seamless | 1016 | 100 | 6-12 | Lowest | Critical applications, corrosive environments |
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Corrosion resistance is one of the most critical factors for marine and coastal projects.
Royal Steel Group offers multiple anti-corrosion solutions:
Black Steel Surface
Suitable for inland construction and secondary processing.
Fusion Bonded Epoxy (FBE) Coating
Offers excellent chemical resistance and long-term protection.
3PE Coating System
Consists of:
Epoxy primer
Adhesive layer
Polyethylene outer layer
This system is widely used in marine projects, offshore structures, and pipeline foundations.
These large-diameter spiral 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.
Core Applications:
Deep foundation piles offer high axial load-bearing capacity, suitable for high-rise buildings, industrial plants, and soft soil conditions.
Bridge and Highway Infrastructure: Capable of withstanding the enormous dynamic loads of river-crossing bridges, highway viaducts, and railways.
Marine and Port Engineering: Excellent resistance to high water pressure and marine corrosion, suitable for docks, piers, and offshore platforms.
Energy and Heavy Industry: Provides heavy-duty support for wind turbine foundations, oil and gas structures, and power plants.
Urban and Municipal Transportation: Reliable foundation performance for subway stations, underpasses, and retaining structures.
1) Branch Office - Spanish-speaking support, customs clearance assistance, etc.
2) Over 5,000 tons of stock in stock, with a wide variety of sizes
3) Inspected by authoritative organizations such as CCIC, SGS, BV, and TUV, with standard seaworthy packaging
1. Packaging:
Wooden blocks or dunnage are used between layers of packaging bags or containers to prevent damage during transportation.
Surface treatment (optional): Black paint, rust-preventive oil, or plastic film rolls.
Hot-dip galvanized piles can be covered with a temporary protective film to prevent surface scratches.
Custom packaging is available.
2. Transportation:
Stock bending lengths: 6 meters, 12 meters. Non-standard lengths are also available upon project request.
Suitable for sea, rail, or road transport.
Delivery time is typically 15-30 days after receipt of payment, depending on product type and specifications.
Suitable for worldwide export, with a full set of documents (certificate of conformity, packing list, bill of lading).
3. Handling Precautions:
Securely fasten the pipes using a crane or forklift equipped with slings or slings to prevent deformation.
Store the pipes in a dry, ventilated, and cool place before installation to prevent rust.
Oversized/overweight shipments must comply with local transportation regulations.
1. What are the applications of ASTM A500 SSAW steel pipe?
ASTM A500 SSAW steel pipe is an ideal material for foundation piles, bridge construction, port engineering, offshore drilling platforms, and large-scale social infrastructure projects, capable of withstanding the loads of deep foundations.
2. What is the difference between Grade B and Grade C?
Grade C steel pipe has comparable yield strength and tensile strength to Grade B steel pipe. It is relatively recommended for heavy, large-diameter pile foundation projects, such as offshore and marine engineering.
3. What does SSAW steel pipe mean?
SSAW steel pipe is manufactured by spiral-forming steel coils into a tubular shape, followed by submerged arc welding to produce high-strength, low-cost large-diameter (219-1626mm) steel pipe.
4. What are the dimensions of ASTM A500 SSAW steel pipe?
Typical sizes range from 219-1626 mm in outer diameter and 15-35 mm in wall thickness, meeting diverse engineering needs such as bridges, ports, and deep foundations.
5. Why Choose Royal Steel Group?
Direct supply from our Chinese factory
Competitive pricing for global infrastructure projects
Large-scale production of SSAW steel pipe piles
Strict quality control system (compliant with ASTM/EN/GB standards)
Extensive export experience, supplying to North America, Latin America, the Middle East, and Africa.
Contact Details
Address
Kangsheng development industry zone,
Wuqing district, Tianjin city, China.
Phone
Hours
Monday-Sunday: 24-hour Service
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