AISI 4130 WNRF Flanges

The AISI 4130 WNRF Flanges offered by us is a popular type of pipe flange that was initially developed for use on small-sized high- pressure piping. The fabrication of this type of AISI 4130 Weld Neck Flanges is similar to that of a slip-on flange. Though, the internal pocket of a AISI 4130 Weld Neck Flanges allows for a smooth bore and better fluid flow. When provided with an internal weld, the static strength of these AISI 4130 WNRF Flanges is equal to slip-on flange, but the fatigue strength is 50% greater than double AISI 4130 WNRF Flanges. Smooth bore conditions in such a flange can easily be attained without having to bevel the flange face and, after welding, to reface the socket weld flange as would be required with slip-on flanges. For this reason, the internally welded flange is popular in chemical process piping. The AISI 4130 WNRF Flanges may be attached to the end of a piece of pipe or to one or more ends of a pipefitting. The AISI 4130 WNRF Flanges is positioned so the inserted end of the pipe or fitting is set back or short of the AISI 4130 WNRF Flanges face by the thickness of the pipe wall plus 1/8 of an inch. This allows for a fillet weld inside the AISI 4130 WNRF Flanges equal to the thickness of the pipe without doing any damage to the flange face. The back or outside of the AISI 4130 WNRF Flanges is also welded with a fillet weld. We Piyush Steel offer the products at cost effective prices and ensure that they conform to international quality standards.