... ",24"-96" 3.Qalification:ISO9001,API,CE forged steel pipe cross sizeSeamless:from 1/2" to 24"Welded:from 24" to ... DIN2617 JISB2311 JISB2312 JISB2313materialCarbon steel(ASTM A234WPB,,A234WPC,A420WPL6.ect)Stainless steel(ASTM A403 WP304,304L,316,316L,321.,ect)Alloy ... , papermaking, construction, etcSpecial design available as the requirement of customer stainless steel cross