Large Diameter Spiral Steel Pipe
Send the required outside diameter, wall thickness, length and dimensional tolerances. Maximum production size and shipping feasibility require written confirmation.
Build a complete technical inquiry.
| Specification / review point | What to include in your inquiry |
|---|---|
| Outside diameter | Required OD and unit; published supply range pending verification. |
| Wall thickness | Nominal / minimum wall, unit and tolerance. |
| Length | Fixed / random length, tolerance and quantity per length. |
| Standard & grade | Full designation, contractual edition, grade and PSL if applicable. |
| Chemical & mechanical properties | Use the governing standard and approved project specification; no generic substitution. |
| Ends & joints | Plain, beveled or project-specific ends; drawings for flanges or connections. |
| Coating / lining | System, thickness, surface preparation and acceptance criteria. |
| Inspection & testing | Request traceability, dimensional inspection, NDT and pressure testing as applicable. |
| Packing & shipment | End protection, marking, lifting, destination and Incoterm preference. |
Resolve these items before purchase.
Manufacture & acceptance
Agree the manufacturing route, weld procedure requirements, dimensional tolerances and inspection hold points. Confirm each requirement in the purchase specification.
Review manufacturing workflow →Documentation & logistics
Request material records, test reports, traceability and packing details. Confirm shipping feasibility for your pipe length and destination.
Review quality documentation →Related procurement routes.
API 5L SSAW Line Pipe ↗
Specify the contractual edition, grade, PSL, dimensions and service conditions. API 5L addresses line pipe; reference to a standard does not imply API licensing.
ASTM A252 Spiral Piling Pipe ↗
ASTM A252 covers welded and seamless steel pipe piles. State Grade 1, 2 or 3 as specified by the design, together with dimensions and project acceptance requirements.
Spiral Pipe for Water Transmission ↗
Include design pressure, water chemistry, lining, external coating, joint system and governing project specification. Drinking-water approvals must be independently verified.