American Standard steel pipe57*7,A106B630*21Steel pipe,Chinese steel pipe20*5Steel Pipe

All of our products are domestically sourced, developed, and produced, which means our customers have immediate access to exactly the products they need for their particular application. And, because our products are domestic, you are assured of the highest quality and manufacturing standards and a local, concerned, customer service presence. A106 Comparative Specifications ASTM Specification A106 covers seamless carbon steel nominal wall pipe for high-temperature service, suitable for bending, flanging and similar forming operations. NPS 1-1/2 and under may be either hot finished or cold drawn. NPS 2 and larger shall be hot finished unless otherwise specified. Surface finish standards are outlined in the specification. Purchaser may specify NDE in lieu of hydrostatic test or neither. Unless otherwise specified, pipe is furnished with plain ends.