FLANGE Material:Carbon Steel / Stainless Steel etc. Pressure:ANSI Class 150/ 300/ 400/ 600/ 900/ 1500/ 2500, DIN PN 6/ 10/ 16/ 25/ 40/ 64/ 100/ 160/ 250 Size:1/2""~72" Standard: ANSI B16.5, MSS SP44, DIN 2631/2632/2633/2634/2635/26362637/2628 ( WELDING NECK ) DIN 2527 ( BLIND ); DIN 2573/2576 ( PLATE ) BS 10 Table A/ D/ E/ F/ H/ J/ K/ R/ S/ T