... 2..low and medium pressure boiler ,high pressure boil thick wall seamless steel pipe1) Standard:API 5L,ASTM 36.10M,A106,A53 ... : OD 1/8”to 48” (10.3mm-1219.2mm)4) Wall Thickness : 2mm to 60 mm5) Schedule: SCH5-160, STD, XS ... :petroleum,gas,chemical,power,shipbuilding,boiler,construction,,metallurgy,etc thick wall seamless steel pipe