... flanges 1.Size:1/2" up to 48" 2.Material:carbon steel,alloy steel,stainless steel 3.Standard:ASME B 16. ... forged flanges 1. Specifications:ASME, JIS, MSS, API, DIN, BS2. Material: Carbon Steel(ASTM A105, A181, ST 37.2, C22.8, Q235 ... EN Flanges; 5K-63K for JIS Flanges. 6. Certification:ISO9001 Carbon Steel forged flanges