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Product Details
Forged steel fittings are the fittings made by forged steel. The process of manufacturing forged steel fittings include: cutting and heating billets, put pressure on heated billets under dies into desired shape, trimming and shot blasting. Then machine forged blank fittings for net shape and dimensions.
According to the applications of forged steel fittings, they are available in threaded and socket weld end connections. The dimensions for socket weld forged steel fitting conform to ASME B16.11 and threaded forged steel fittings conform to ASME (American Society of Mechanical Engineers) B1.20.1.
Materials
Carbon Steel: A105, ASTM specification dealing with forged carbon steel piping components
Stainless Steel: 304 or 316 stainless steel. With stainless steel, the fittings will not rust.
Most of the forged steel fittings are not large, so closed die forging is normally adapted to produce forged steel fittings. Close die Forging is a plastic deformation process where, unlike in the open die forging process, the material is forced to flow between closed dies. Compared to the open die forging, the close die forging (said also hot drop forging) can achieve more complex geometries, very much close to the dimensions of the finished component. The plastic deformation is given rapidly through some shots which force the material to fill the shape of the die. The process is performed at the plastic temperature of the material in use without intermediate re-heatings.
Close die forging can produce forged steel forgings in all types of forged steel fittings, no matter it is carbon steel or stainless steel. Closed die forged steel fittings shows several advantages like the typical flow lines of the material along the profile of the component, beneficial particularly on mechanical components put in service under cyclic fatigue. This process allows furthermore to use reduced over-dimensions, feature which allows cost savings on input weights as well as on final machining due to less material to remove.
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