... condenser, boiler parts and superheater.2. pressure pipes, petroleum transmission pipes, petrolchemical industry pipes, liquid delivery pipe, water pipelines.3. ... to the product standard, we produce the stainless steel pipes & tubes in strict accordance with ASTM A249, A269, A270, A312 ... , A554, DIN 11850 and so on. ASTM A270 Stainless Steel Pipes ...