... SP-75 DIN2615 DIN2616 DIN2617 JISB2311 JISB2312 JISB2313materialCarbon steel(ASTM A234WPB,,A234WPC,A420WPL6.ect)Stainless steel(ASTM A403 WP304,304L,316,316L,321 ... API CEapplicationPetroleum, chemical, machinery, electric power, shipbuilding, papermaking, construction, etcSpecial design available as the requirement of customer stainless steel cross