... 1/2"-24",24"-96" 3.Qalification:ISO9001,API 90 degree stainless steel elbows sizeSeamless:from 1/2" to 24 ... DIN2615 DIN2616 DIN2617 JISB2311 JISB2312 JISB2313materialCarbon steel(ASTM A234WPB,,A234WPC,A420WPL6.,ect)Stainless steel(ASTM A403 WP304,304L,316, ... ect)Alloy steel(ASTM A234 WP12,WP11,WP22,WP5,WP9,WP91,ect)qualificationISO9001 API CEapplicationPetroleum, chemical, machinery, electric power, ...