The role of 90 degree long radius elbow on piping equipment. Flange is a commonly used fitting in piping equipment. It connects pipes and equipment with pipe fittings such as elbows, tees and valves. In the process of pipeline use, due to the different medium, temperature and flow rate of the conveyed material, the length, level of the pipeline and the pressure generated by the power of the concrete pump are different. When selecting pipeline components and pipeline accessories, special attention should be paid to the product material and quality. When purchasing pipes and fittings, we must carefully compare relevant national and international standards, design and evaluate the size and pressure of the required products, and carefully conduct carbon steel pipe fittings, alloy steel pipe fittings, stainless steel pipe fittings and other material pipe fittings as needed. Choose to strictly control the quality and technical requirements of pipe fittings, production and inspection processes.