Stainless steel pipes are available in a variety of ways. Common types of pipe fittings are compression, compression, union, push, push thread, socket weld, union flange connection, welding and welding and conventional connection. Combined derivative series connection. These connection methods vary according to their principles, but most of them are easy to install, reliable and reliable. The sealing ring or gasket material used for the connection is mostly made of silicone rubber, nitrile rubber and EPDM rubber which meet the requirements of national standards, which eliminates the worries of users.