Description
Direct Mill Supply for Piling Projects — Every SSAW steel pipe pile is tested in our in-house laboratory for wall thickness and weld seam integrity before leaving Jinan.
Technical Specifications
| Parameter | Value |
|---|---|
| Designation | SSAW Steel Pipe Pile |
| Product Type | SSAW Steel Pipe / Spiral Submerged Arc Welded Pipe |
| Steel Grade | Q235B, Q345B, S355, ASTM A252 Grade 2, Grade 3, St37-2, St52.4, A106 Grade B |
| Standard | GB, EN, ASTM, DIN, API |
| Section Shape | Round |
| Outer Diameter | 20–1100 mm |
| Wall Thickness | 2–50 mm |
| Length | 6–70 m or customized |
| Technique | Double-sided Submerged Arc Welding (SAW) |
| Surface Treatment | Bare / Black Paint / PE / 3PE / Epoxy / Galvanized / Bitumen Coated |
| Tolerance | ±1% |
| Ends | Beveled / Plain (welding ring and shoe fabrication available) |
| Application | Deep foundation, bridge piers, marine piling, metro construction, wind power foundations |
| Origin | Shandong, China |
Application Suitability
| Industry | Typical Applications |
|---|---|
| Infrastructure & Civil Engineering | Metro deep foundation piles, bridge pier casings, highway sound barrier foundations |
| Marine & Port Construction | Dock fender piles, jetty bearing piles, offshore platform jacket legs |
| Energy & Power | Wind turbine tower foundation piles, solar farm ground screw piles |
| Building & High-rise | Tower crane foundation piles, basement retaining wall piles |
What Negative Tolerance Really Costs on a Piling Contract
A 2mm wall-thickness shortfall on a 1100mm OD pile can mean the difference between passing SGS inspection and paying demurrage at destination port.
Procurement teams often focus on unit price per ton while overlooking dimensional tolerance. When wall thickness falls below the specified minimum — even within “acceptable” negative tolerance ranges — pile driving contractors encounter cracked weld seams during installation, and consulting engineers reject the batch outright. [NEED_CITE: dimensional tolerance requirements for spiral welded steel pipe piles per ASTM A252] Missing or incomplete mill test certificates compound the problem: customs authorities in the EU and Middle East increasingly flag shipments without EN 10204 3.1/3.2 documentation, causing weeks of delay.
Matching Pile Specifications to Driving Conditions and Soil Environments
Selecting the right SSAW steel pipe pile starts with understanding the installation method and ground conditions. For vibro-driven piles in cohesionless soils, Q235B and St37-2 grades provide sufficient ductility, while static press-in piling through dense sand or weathered rock demands Q345B or S355 for higher yield resistance without seam cracking. In marine environments with chloride exposure, 3PE or bitumen coating systems extend service life far beyond bare or painted finishes. Our double-sided SAW process ensures uniform weld penetration across the full 2–50mm wall thickness range, which matters when piles must withstand driving stresses at 70m lengths.
Structural Compliance and Certification for International Piling Projects
Piling specifications typically reference EN 10219 for structural hollow sections or ASTM A252 for steel pipe piles — the steel grade equivalence between these standards is not always straightforward. [NEED_CITE: steel grade equivalence mapping between GB Q345B, EN S355, and ASTM A252 Grade 3] EU-funded infrastructure projects require CE marking per EN 10210, while Middle East port authorities often demand Singapore FPC certification alongside SGS pre-shipment inspection. Beveled ends with welding rings and fabricated pile shoes reduce on-site preparation time, but these processing services must be specified at the order stage — not added as an afterthought.
Steel Grade Selection and Welding Process Fundamentals
The Q-series (Q235B, Q345B) follows Chinese GB standards where the number indicates minimum yield strength in MPa; S355 follows EN 10219 with equivalent mechanical properties; ASTM A252 Grade 2 and Grade 3 serve North American piling specifications. For SSAW pipe piles, the double-sided submerged arc welding process produces a helical weld seam with full penetration — critical when piles are driven through hard strata or socketed into rock. Wall thickness up to 50mm covers the full range from light-duty ground screws to heavy marine bearing piles. Surface treatment selection depends on soil resistivity and water chemistry: 3PE coating suits buried applications with aggressive soils, while bitumen coating performs well in tidal splash zones.
Hidden Costs of Procuring the Wrong Pile Specification
Ordering SSAW steel pipe piles based solely on lowest price per ton creates downstream risk. Material substitution — receiving Q235B when Q345B was specified — may pass visual inspection but fails mechanical testing, forcing pile rejection after mobilization costs are already incurred. Incomplete coating application leads to premature corrosion in marine environments, requiring expensive remediation. Missing CE documentation blocks EU customs clearance regardless of physical quality. [NEED_CITE: consequences of non-compliant steel pipe pile documentation in international construction projects]
Why Project Procurement Teams Source SSAW Steel Pipe Piles from Shandong Xin Jiyuan
Every SSAW steel pipe pile undergoes dimensional, mechanical, and chemical testing in our in-house laboratory before shipment — not sampled, but tested per heat number. We hold CE certification per EN 10210/EN 10219, ISO 9001:2015, and Singapore FPC, covering EU, Middle East, and Southeast Asian project requirements. Our production lines cover outer diameters from 20mm to 1100mm with wall thickness up to 50mm, meaning project teams source both light ground screws and heavy marine piles from a single mill. Custom fabrication services — beveling, welding ring attachment, pile shoe welding — are completed in-house, eliminating coordination with third-party fabricators. Professional container loading with anti-damage measures prevents the bending and coating damage that frequently occurs during ocean transit.
Documentation & Compliance
- Mill Test Certificate per EN 10204 3.1 documenting Q345B chemical composition and mechanical properties per heat number
- CE Certificate per EN 10210 for structural hollow sections, required for EU infrastructure project compliance
- ISO 9001:2015 Quality Management System certificate covering SSAW steel pipe pile production
- SGS or BV third-party inspection report available for pre-shipment verification of dimensions, coating thickness, and weld seam quality
- Material traceability documentation linking each SSAW steel pipe pile to heat number, welding parameters, and test results
- Full customs documentation including packing list, bill of lading, and certificate of origin for destination clearance
Packaging, Loading & Delivery
- SSAW steel pipe piles bundled with steel strips and edge protectors to preserve 3PE and bitumen coating integrity during ocean transit
- Beveled ends fitted with plastic caps to prevent damage to welding preparation during handling and transport
- Custom length cutting to 6–70m specifications with container loading optimization for 20ft and 40ft open-top containers
- Heat number and steel grade marked on each SSAW steel pipe pile at 1m intervals for site identification and traceability
- FOB Jinan/Qingdao, CIF destination port, or DDP project site delivery with full export documentation
- Slightly oiled bare pipe surfaces to prevent transit corrosion before coating application or final installation
Requesting a Quotation for Your Piling Project
Submit your SSAW steel pipe pile specifications — outer diameter, wall thickness, steel grade, coating type, quantity, and destination port — to receive a detailed quotation with unit pricing, production lead time, and applicable certification. Non-standard sizes, custom lengths, and fabrication services including beveling and pile shoe attachment are quoted separately. We confirm mill test certificate availability, third-party inspection scheduling, and container loading plans before contract execution.
Frequently Asked Questions
Q: What is the difference between ASTM A252 Grade 2 and Grade 3 for SSAW steel pipe piles?
A: ASTM A252 Grade 2 specifies a minimum yield strength of 248 MPa, while Grade 3 requires 303 MPa minimum yield. For SSAW steel pipe piles subjected to heavy driving stresses or structural loading, Grade 3 provides higher resistance to deformation during installation. Both grades are produced using double-sided submerged arc welding with full penetration weld seams.
Q: Can you provide 3PE coating for marine piling applications?
A: Yes, 3PE (three-layer polyethylene) coating is available for SSAW steel pipe piles destined for marine and offshore environments. The coating system includes fusion-bonded epoxy primer, copolymer adhesive, and polyethylene outer layer, providing corrosion protection in submerged and splash zone conditions. Coating thickness is verified during pre-shipment inspection.
Q: Do your SSAW steel pipe piles have CE marking for European projects?
A: Our SSAW steel pipe piles carry CE certification per EN 10210 for hot-finished structural hollow sections and EN 10219 for cold-formed sections. Factory Production Control is audited by Lloyd’s Register, and mill test certificates conform to EN 10204 3.1 requirements for EU project compliance.
Q: What fabrication services are available for SSAW steel pipe piles?
A: We provide cutting to custom lengths, beveled end preparation, welding ring attachment, and pile shoe fabrication. These services are completed in-house before shipment, reducing on-site preparation time and ensuring weld preparation meets project specifications. Processing details are confirmed during the quotation stage.
Q: How is invoicing calculated for SSAW steel pipe piles?
A: SSAW steel pipe piles are invoiced by actual weight as measured at our facility before shipment. Theoretical weight calculations based on outer diameter, wall thickness, and length are provided for reference, but final invoicing reflects actual measured weight per heat number.
Get Your SSAW Steel Pipe Pile Quotation with Mill Test Certificates
Send your project specifications — diameter, wall thickness, steel grade, coating, quantity, and destination — to receive pricing, certification confirmation, and production scheduling within 12 hours.
Shandong Xin Jiyuan Special Steel Tube Co., Ltd
Tel: +86 531 8573 6315
Mobile/WhatsApp/WeChat: +86 188 5315 7756
Email: admin@sdxjypipe.com
Address: No.11889, Jingshi West Road, Lulian Group, Jinan City, Shandong Province, China
