Product description
1, Products name: Hot Rolling Seamless Carbon/ Alloy Steel Pipes & Tubes; 2, Specification: O.D: from 57 mm to 219 mm; W.T: from 5 mm to 40 mm;3, Standard: GB/T 8162, GB/T 8163, GB/T 3087, GB/T 5310, ASTM A53, ASTM A106, DIN1629, DIN 17175,JIS, B