Stainless Steel Pipe & Tube Selection

Choose your pipe or tube specification

Start with the dimensional convention, then choose a manufacturing route and section shape. These describe different aspects of the order. Confirm the exact grade and applicable product standard before selecting material.

1. Pipe or tube: how is it dimensioned?

2. Seamless or welded: how is it made?

Seamless and welded describe manufacture. Both terms can apply to pipe or tube. Specify the permitted route, heat treatment and required inspection. ERW is a welded route, not a third category parallel to all welded products. Neither route alone establishes a pressure rating or suitability for a particular service.

3. Round, square or rectangular: what is the section?

For round sections, provide the outside diameter or pipe size convention. For square and rectangular sections, provide both outside dimensions, wall thickness, corner requirements and a drawing where tolerances matter. Shape does not determine whether the product is seamless or welded. Confirm availability of the requested grade, shape and manufacturing combination.

Match the standard to the product

Examples of distinct product specifications include ASTM A312 for austenitic pipe, A269 for general-service austenitic tube, A213 for seamless boiler and heat-exchanger tube, and A249 for welded austenitic boiler and heat-exchanger tube. Their grade coverage and requirements differ. ASME B36.19 addresses stainless pipe dimensions; a dimensional table is not a material certificate or pressure rating.

References: ASTM A312, ASTM A269, ASTM A213, ASTM A249 and ASME pipe dimensions.

Select the grade and order type

Use the pipe column for pipe specifications and the tube column for tube specifications. Product availability, certificates and delivery conditions are confirmed against your enquiry.

Send a complete enquiry

Include grade, product standard, dimensions, seamless or welded manufacture, section shape, finish, length, quantity, application, inspection requirements and delivery destination.