There are many kinds of Flanges accessible, for example, Welding Neck Wall It is by and large utilized in low temperature and high-pressure applications since they required the unlimited liquid stream convey by the line framework. Long welding Neck-They are equivalent to weld neck just distinction is in lengthy welding neck the tightened center (neck) is extended and performs like an ... https://www.shasanpiping.com/duplex-steel-S32750-S32760-flanges-manufacturers-exporters-suppliers-stockists.html