201 SGS stainless steel pipe Manufacturer,ISO,ASTM A554 Raw material from Tisco,Bao Steel ... High quality,prompt delivery 201 SGS stainless steel pipe ... tube is 8,000 tons per month2. Manufacturing Standard ASTM A554, JIS, DIN,EN, GB3. Nice raw ... . Thickness range 0.25mm~3.0mm, strict with ASTM A5548. Welding line Straight, full penetration welding line. ...