... , DIN, JIS, HG, GB, JG Specifications 1)welding neck , slip - on ,socket welding , blind. 2)ASTM A105,DIN ST37.2,ASTM ... , F316,F316L,F321 ,ASTM A350 ,ASTM A181, Q235, 20#, 20Mn3)Rating : ANSI 150LBS - 2500LBS DIN PN6 - PN160 JIS 5K - 30K HG ... , BS, DIN, JIS, EN, GB and customer's request. slip-on stainless flanges