A Welding Neck Flange (WNRF Flange) has a long tapered hub that can be welded with a pipe.This flange type is used, normally, in high-pressure and high/low temperature applications that require an unrestricted flow of the fluid conveyed by the piping system (the bore of the flange matches with the bore of the pipe).The absence of pressure drops prevents negative effects as turbulence and erosion/corrosion of the metals in the proximity of the flanged joints.
The tapered hub allows a smooth distribution of the mechanical stress between the pipe and the weld neck flange and facilitates the execution of radiographic inspections to detect possible leakages and welding defects.The dimension of the flange (nps and the pipe schedule) shall match the dimension of the connecting pipe.
We manufacture IBR weld neck flanges, Galvanized weld neck flange , Stainless steel (SS) weld neck flange , Carbon steel (CS) weld neck flange , MS weld neck flange , Alloy weld neck flange , Inconel weld neck flange, Monel Nickel weld neck flange , Duplex stainless steel (DSS) weld neck flange , Super Duplex stainless Steel (SDSS) weld neck flange and Brass weld neck flange .
We manufacture weld neck flanges as per ASME B16.5, ASME B16.47, DIN, EN1092-1, BS4504, GOST 12820-80, JIS B2220, KS D3576, KS B6216, KS B1511, UNI, SABS 1123, etc. and also non-standard weld neck flanges as per drawing.
We export weld neck flange to United States (USA), Canada, Germany, Japan, France, Middle-east, Bangladesh, Nepal, etc.
We are manufacturers and suppliers of weld neck flange since the year 1971.