... SA213JISG3467-88JISG3458-888-1240OD*1-200WTFor the petroleum,chemical,electricity,boilers industrial which can resist high ... 60WTFor the petroleum,aviation,smelting,food,water,electricity,chemical,chemical fiber,pharmaceutical machinery.LowTemperatureSteelpipe 16MnDG,10MnDG,09DG09Mn2VDG, ... 20#,16Mn/Q345B,ST52GB6479-20008-1240OD*1-200WTFor chemical equipment and piping which the work temperature is -40 ...