... ,JISB1503/B2220, DIN 2573 3.ISO9001, SGS, BV 1500# Weld Neck flange 1. Specification Type1500# Weld Neck ... flangePipe Size1/2"—72" Pressure150# ,300#, 600#, 900#,1500#, 2500#, PN16, PN25, PN40, 5K,10K, 6bar, 16bar, ... , DIN2633,ASME , ASTM,,JIS , DIN , EN,MaterialQ235, 20#, Q345A105, ST37.0,ST35.8,St37.2,St35.4/8 ... 3.Production4.Marking5.Packing & Transportation6. Company 1500# Weld Neck flange