3.91mm Sch40 Thickness Butt Weld Pipe Elbow ASTM 180 Degree Pipe Elbow

Butt Weld Pipe Fittings ASME A234 WPB Carbon Steel Pipe Fittings Elbow ASME B16.9 90DEG 180 DEG ASTM A234 WPB

Pipe Fitting B16.9 Elbow ;Tee;Reducer;Cap;Sch40;Sch80;Black;Anti-Rust Oil

One of the most common methods for manufacturing elbows is using hot mandrel bending from straight steel pipes. After heating the steel pipe at a elevated temperature, the pipe is pushed, expanded, bend by the inner tools of mandrel step by step. Applying hot mandrel bending can manufacture a wide size range seamless elbow. The characteristics of mandrel bending are strongly depend on the integral shape and dimensions of the mandrel. The using advantages of hot bending elbows include smaller thickness deviation and stronger bending radius than other bending method type. Meanwhile, using bending instead of prefabricated bends substantially reduces the number of welds needed. This reduces the amount of work required and increases the quality and usability of pipes. However, cold bending is the process to bent the straight steel pipe at normal temperatures in a bending machine. Cold bending is suitable for pipes with an outer diameter of 17.0 to 219.1 mm, and wall thickness 2.0 to 28.0 mm. The recommended bending radius is 2.5 x Do. Normally at a bending radius of 40D. By using cold bending, we can get small radius elbows, but we need to pack the internals with sand to prevent wrinkling. Cold bending is a quick and inexpensive bending method. It is a competitive option for making pipelines and machine parts.

Cangzhou Authentic Pipe Fitting Manufacturing Co., Ltd. is located in Mengcun County, the capital of pipe fittings in China and the center of pipe fitting manufacturing. It covers an area of 100,000 square meters and a building area of 50,000 square meters. Our company has a strong workforce. There are more than 200 employees, including more than 60 professional and technical personnel, with the ability to produce various pipe fittings.

The company has a number of pipe fittings manufacturing production lines, with independent pressing, machining, intermediate frequency hot pushing, cold forming, hot extrusion, heat treatment and other technologies. In addition, in order to ensure product quality, companies are paying more and more attention to the improvement of inspection equipment. Advanced equipment, along with corresponding testing capabilities, are constantly being used, such as chemical elemental analysis, metal testing, physical inspection, and non-destructive testing. In addition, we use advanced material composition analysis equipment - a continuous reading spectrum equipment can directly and accurately test the chemical composition of various metal materials.