5K flange 1.Size:1/2'' - 72'' 2.Standard: ASTM A105 ... B16.48,JISB1503/B2220, DIN 2573 3.ISO9001, SGS, BV 5K Weld Neck flange 1. Specification Type5K Weld Neck flangePipe Size1 ... 72" Pressure150# ,300#, 600#, 900#,1500#, 2500#, PN16, PN25, PN40, 5K,10K, 6bar, 16bar, 25barStandardANSI B 16.5, ANSI B16.45 ... away from port.2.Product3.Production4.Marking5.Packing & Transportation6. Company 5K Weld Neck flange