ASTM A234 WPB Butt-Weld Fittings

Butt-weld fitting checklist

Fitting geometry

Elbow / tee / reducer / cap; NPS inlet and outlet, angle and CLR or LR / SR designation. Confirm the radius basis.

End-wall dimensions

Schedule or actual wall at each connection, construction and bevel preparation. State dimensional standard / drawing.

Material & treatment

ASTM A234 WPB / ASME B16.9; confirm grade, heat treatment and product-specific inspection requirements.

Mixed packages

List each line with its own size, wall, quantity and unit. Identify permitted makes and any material substitutions needing approval.

Inspection & traceability

• Request heat / batch traceability with the ordered grade and product specification.
• State MTC type and any PMI, chemical / mechanical tests, NDT or third-party witnessing.
• Agree the inspection plan, acceptance criteria and document list before order placement.
• Request manufacturer, raw-material source and finished-product origin records where required.

Certification, testing and inspection availability depend on the product and agreed order. The catalogue illustration is not evidence of current stock or a specific manufactured item.

Use US units without losing precision

Specify NPS in inches and state the dimensional standard. For actual dimensions, include units: in / mm, ft / m or lb / kg. Nominal pipe size is not a direct measurement of OD.

Define piece length, total length, quantity and billing basis. For example, a standard or random length must be confirmed in the offer rather than assumed to be 20 feet or 6 metres.

Origin, packing & commercial scope

State any non-China, domestic-origin or approved-source restriction before quoting. Indian manufacture and non-China raw-material origin are separate requirements; both need supporting records if specified.

Include the US city / ZIP or port, requested delivery date, currency and Incoterms rule with its named place. Confirm protection, packing, freight, insurance and importer responsibilities in writing.

The importer / customs broker must confirm HTS classification, origin, applicable trade-remedy scope and duties. This page does not promise duty-free entry, approved-vendor status or compliance with a buyer-specific origin restriction.