... gas industry, construction, engineering, power station, cylinder, automobile. Standard: GB/T3087,3639,5310,5312,6479,6725,8162,8163,18248; ASTM A53,A106 ... : OD 10mm-1200mm,thickness 2.0mm-150mm O.D.W/T(mm)(mm)3.34.55.66.47.99.511.912 ... .6 √√√√√√√√√√√406.4 √√√√√√√√√√√457.2 √√√√√√√√√√508 √√√√√√√√√√558.9 √√√√√√√√√√609.6 √√√√√√√√√√ Seamless Steel Pipe