Size:1/2" to 72" 2)STANDARD:ASME,JIS,DIN,GB 3)Material:ASTM A234 WPB,A420 ... Seam pipe fittings)3.Wall thickness: Sch5-Sch160,XXS4.Standard: ISO, SNSI, JIS, DIN, GB/T12459,GB/T13401,ASME B16.9. ... bends,flanges,lap joint stub ends) according to ASME, JIS, DIN standard.. In order to enlarge our existingmarket, we are ... terms and conditions Upon receipt of your inquiries. standard carbon steel a105n flanges