Among hardware accessories, 180D elbow, as an important connection accessory, plays a decisive role in installation. 180D elbow is often used as a steering node in stainless steel stairs and handrails. For this type of stainless steel 180D elbow, there are generally 5 types according to its different nodes:

　　1, 180D elbow with flange means that the end of the pipe is convex to the inside or outside, and the round edge: a pipe fitting that forms a bulge or groove in the circumferential direction of the pipe;

　　2, stainless steel 180D elbow pipe fittings with variable wall thickness refer to obvious changes in wall thickness along the length of the pipe;

　　3. Change straight pipes into elbows with different radii of curvature, such as 180D elbow, elbow, etc.;

4. Stainless steel 180D elbow variable diameter pipe fittings, which means that the diameter of the pipe end or a certain part of the pipe is reduced; pipe fittings with crimping and bottom sealing, increase the total strength of the pipe end to the outside or inside of the pipe, or seal the end of the pipe Pipe fittings;

　　5. Change the 180D elbow section of the pipe fittings, according to the requirements, change the circular section into a square, oval, polygon, etc.