Shandong Aiguo Forging Co.,Ltd(Used name Zhangqiu Aiguo Forging Co.,Ltd) was established in 1992 and has been exporting flanges since 2011. As a professional China Loose Flange manufacturers and China Loose Flange suppliers, we are strong strength and complete management. The loose flange can be subdivided into the butt welding ring with neck loose flange, butt welding ring plate loose flange, flat weld ring plate loose flange and flanging ring plate loose flange 4 kinds.
This kind of flange is not welded directly with the pipe, but the flange of the nozzle or the welding ring is used as the sealing contact surface. The loose sleeve flange is used for fastening.It is mainly used in copper, aluminum, lead and other non-ferrous metals and stainless acid resistant steel pipe.
Sizes and styles of Loose Flange that we don’t have in-stock can be made in an expedient manner.
ANSI B16.5 Class300 Loose Flanges are used with a corresponding stub-end that "inserts" in the inside of the flange. The main benefit of this type of flange, is that once the pipe welds to the insert stub-end, the flange then can rotate for easier alignment of the bolting holes.However, lap joint flanges and their stub-ends' ability to hold pressure is about the same as slip-on flanges.