... Specifications 1)welding neck , slip - on ,socket welding , blind. 2)ASTM A105,DIN ST37.2,ASTM A182-F304 F304L 3)ANSI B16 ... .5,BA105,DIN ST37.2, ASTM A182- F304 F304L, F316,F316L,F321 ,ASTM ... 25 - PN25 PN2.0 - PN42.04)Specification: from 1/2" to 80" (DN15 to DN2000)5)Special designavailable as the ... BS, DIN, JIS, EN, GB and customer's request. socket welding stainless flanges