Size:1/2" to 72" 2)STANDARD:ASME,JIS,DIN,GB 3)Material:ASTM A234 WPB,A420 WPL3 ... fittings)3.Wall thickness: Sch5-Sch160,XXS4.Standard: ISO, SNSI, JIS, DIN, GB/T12459,GB/T13401,ASME B16.9. ... flanges,lap joint stub ends) according to ASME, JIS, DIN standard.. In order to enlarge our existingmarket, we are interested ... terms and conditions Upon receipt of your inquiries. standard carbon steel a105n flanges