... etc. 4)material:cs,ss,alloy BG BW pipe fitting 180 Degree Bend sizeSeamless:from 1/2" ... DIN2605 JISB2311 JISB2312 JISB2313, BS, GB, ISOmaterialCarbon steel(ASTM A234WPB,,A234WPC,A420WPL6. 20#,Q235,10#,20#, ... A3, Q235A, 20G,16Mn, ect)Stainless steel(ASTM A403 WP304,304L,316,316L,321. 1Cr18Ni9Ti, ... 00Cr19Ni10,00Cr17Ni14Mo2, ect)Alloy steel(ASTM A234 WP12,WP11,WP22,WP5,WP9,WP91, ...