... Gr. A,B,C,DASTM A53 Gr. A,B ASTM A106 Gr. A,B,CASTM A335 Gr. P1,P2,P5,P9 ... ,SCM 430 TK,SCM 435 TK,SCM 440 TKAPPLICATION:1,API SPCE 5L For the purpose of transportation of gas,water,oill ... ,chemicalengineering and. Electric pwer as well as boilerHigh-pressureboiler pipe20G,A106,ST 45 GB5310-95ASTM A 106-99DIN17175-7914-630*2 ...