... are designed for Boiler, Pressure and Heat-exchanger tubes. Stainless steel pipes & tubes are widely used for many areas as follows ... , ladder, furniture and so on.We have many kinds of stainless steel pipes & tubes, including 201, 202, 301, 304, 316L, 2205 ... regards to the product standard, we produce the stainless steel pipes & tubes in strict accordance with ASTM A249, A269, A270, A312, A554, DIN ...