... 79ASTM SA335ASTM SA213JISG3467-88JISG3458-888-1240OD*1-200WTFor the petroleum,chemical,electricity,boilers industrial which can resist high ... A312ASTM A358JIS 3459DIN 174586-630OD*0.5-60WTFor the petroleum,aviation,smelting,food,water,electricity,chemical,chemical fiber, ... cracking pipe10#,20#GB9948-20068-630OD*1-60WTFor the petroleum oil refinery furnace tubes,heatexchanger tube and pipesLow- ...