... material etc 5. used for cylinder etc 304 erw steel pipes A: Round pipe diameter: 20-185MM, thickness: 1.5-15MM ... #, Q195, Q235, 45MN,65MNE: Conforms to international standards, like: ASTM A53, ASTM A500, ASTM A513, ASTM A312, BS1387, DIN2391, DIN2394, DIN17175, JIS G3452, EN10210, EN10219 ...