NON FLANGE STANDARD Mat ' l CS A105 Diameter 26-42 Standard; MSS SP-44, API 605
Flange Welding Neck / Slip On / Blind Mat ' l A105 Carbon Steel / Stainless Steel 304/ 316 Diameter 1 / 2-24 Standard; -2500 # 150 # ansi, JIS 5K-40K, PN 10-100 ....