Used in oil and gas industry, construction, engineering, power station, cylinder, automobile. Used in oil and gas industry, construction, engineering, power ... ,2448,10210,10297,17175Steel Grade: 20#,20G,16Mn,15CrMoG,37Mn,30CrMo,34CrMo4,1010,1020,1045,4140,P11,P12,P22,,P91,S355J2H,St52 ... √√√√√√√√√√√406.4 √√√√√√√√√√√457.2 √√√√√√√√√√508 √√√√√√√√√√558.9 √√√√√√√√√√609.6 √√√√√√√√√√ Seamless Steel Pipe