1.ASTM A106/A53 GR.B 2.Outer diameter:10.3-914.4mm ... ) Standard: GB8163, ASTM A106/A53/API 5L(2) Material: 10#, 20#, 16Mn, A106Gr.A/B/C,(3)Specification: O.D: 21.3mm ... , chemicalengineering and. Electric power as well as boilerHigh-pressureboiler pipe20G,A106,ST 45GB5310-95ASTM A 106-99DIN17175-7914-630*2-80Temperature ...