Stainless steel pipes are widely used for pipelines. Stainless steel pipes & tubes are widely used for many areas as follows:1. heat-exchanger, ... ladder, furniture and so on.We have many kinds of stainless steel pipes & tubes, including 201, 202, 301, 304, ... stainless steel pipes & tubes in strict accordance with ASTM A249, A269, A270, A312, A554, DIN 11850 and so on. stainless steel pipes & tubes for ...