Carbon steel elbow can improve the thermal insulation temperature

　　Carbon steel elbow is a kind of elbow that can improve the heat preservation temperature. It is often used in people's daily life and has been widely accepted and used Carbon steel elbow is widely used in construction, decoration and pipeline laying, which can well ensure the normal and unobstructed pipeline The composition of carbon steel elbow is relatively simple, and its composition is also relatively simple, which can be easily understood and imagined Carbon steel elbow is a kind of polyurethane rigid foam carbon steel layer filled with the elbow of the conveying medium, the high density polyethylene sheath pipe, and the elbow and the outer tube.

　　It is a high density polyethylene external protective tube polyurethane foam prefabricated directly embedded carbon steel elbow. It is only necessary to put the elbow of rust removal and anticorrosion in polyethylene bushing, and injecting polyurethane foam into the middle, so as to fully fill the gap between elbow and polyethylene bushing, and finally form a firm whole of elbow, casing and carbon steel layer, so as to achieve the effect of anticorrosive carbon steel, and the bending head of carbon steel is formed.

　　Most carbon steel elbows are processed by pressure processing, which makes the processed carbon steel elbows produce plastic deformation. According to the processing temperature of elbow, it is divided into cold processing and hot processing.

　　The main processing methods of carbon steel elbow are: semi continuous rolling mill: including 1-stand Steckel mill and 5-stand finishing mill On a semi continuous rolling mill, the hot rolling of pipe fittings in finishing passes is essentially constant from one end to the other The time between passes on the finishing mill is usually less than 3S The process characteristic of pipe fittings is that there is central segregation in continuous casting thin slab. Eliminating central segregation in continuous casting thin slab is the key technical problem to further improve the quality of stainless steel stamping elbow pipe fittings