The main technologies are flared pipe connection technology, ferrule pipe connection technology and so on. As a new type of pipe connection, WALFORM pipe end forming technology is known as the current best leakage prevention solution. The WALFORM technology consists of only three parts: the 24° cone body, the nut and the seal. Conventional DIN fittings and DIN nuts are used to connect the formed tube ends, and seals are installed in the *possible leakage paths, and the fitting bodies are fully compliant with DIN2353 and IS08434-1 standards. It has the characteristics of high nominal pressure level, leak-proof, reliable pipe fixing, fast assembly, and extremely high dynamic bearing capacity. Through the proprietary steel pipe forming equipment, the steel pipe is cold extruded and reformed, so that the steel pipe deformation is uniform, and it is convenient for quality control; At the same time, there are no pitting and cracks.The WF ring fluorine rubber material is resistant to high temperature and pressure, with complete dimensions and standards, and has been well received by the outside world.The triangular ring is made of not only fluorine glue but also nitrile and EPDM, and other materials can also be used, depending on the customer.