Butt weld stainless steel flange is a kind of pipe fitting. It refers to a flange with a neck and a transition of a round pipe and is butt welded to the pipe. It is widely used at present. Stainless steel butt welding flange is not easy to be deformed, sealed well, widely used, suitable for pipelines with high pressure or temperature fluctuation or high temperature, high pressure and low-temperature pipelines. The advantage is that the price is relatively cheap, the nominal pressure does not exceed 2.5MPa. It is also used to transport expensive, flammable and explosive media. The nominal pressure is around PN16MPa.
Stainless steel butt welding ring loose flange is a movable flange. It is usually matched with a water supply and drainage fittings. When the factory leaves the factory, there is a flange at each end of the expansion joint, which is directly connected with the pipeline and equipment in the project. The purpose of using the loose flange of the welding ring is generally to save material. The structure is divided into two parts. One end of the pipe is connected to the pipe and the other is made into a butt ring. The flanges are made of low-grade materials, and the tubes are made of the same material as the pipes to save material.
For the welding ring loose flange:
1. Save costs. When the pipe material is special and expensive, the flange of the same material is costly.
2. Inconvenient to weld or inconvenient to process or require high strength. Such as plastic pipes, glass pipes and the like.
3. Easy to construct. If the flange bolt hole is connected during the connection, it is not easy to find or prevent the flange bolt hole of the equipment to be replaced in the future.