ASTM / ASA;PN;DN;BSLO;GIS;KS;ASME B16.5High temperature carbon steel grades ASTM A 105 / A 266 Gr 2Low temperature carbon steel grades ASTM A 350 LF1 to LF3Carbon steel grades for pipes (5L) ASTM A 694 Gr.F42 / F56 / F60 / F65Alloy steel grades ASTM A 182 Gr.F1 / F2 / F5 / F9 / F11 CL.2 / F12Duplex stainless steel ASTM A182 F304 / 304L;316 / 316L;321;347These standards are more in line with the ISO standard.Classes according to DIN 1092/1 are specified by PN working pressure.These pressures include PN10;PN16;PN25;PN40.This standard specifies the working pressure based on the BAR.This connection also has less pressure tolerance and is considered as a type of ordinary flanges.To connect the pipe, it is placed inside the hole in the middle of the flange and welded butt by butt.For this reason, in this type of connection, the fluid does not come into direct contact with the flange. The dimensions of this product are in accordance with the MSS-SP-43 standard;ANSI B is 16.9.