Elbow mainly has the following several categories

Elbow mainly has the following several categories

(1) The elbow is divided into long radius elbow and short radius elbow according to its radius of curvature.The radius of curvature of the long radius elbow is equal to 1.5 times the outside diameter of the pipe, i.e. R=1.5D.The radius of curvature of the short radius elbow is equal to the outside diameter of the pipe, i.e. R=D.Where, D is the elbow diameter and R is the radius of curvature.

(2) According to the pressure grade, there are about 17 kinds of pipes, which are the same as the American pipe standard, including SCH5S, SCH10S, SCH10, SCH20, SCH30, SCH40S, STD, SCH40, SCH60, SCH80s, and XS.SCH80, SCH100, SCH120, SCH140, SCH160, XXS, among which STD and XS are commonly used.

The production process of elbow is briefly introduced

First cut the good steel pipes for thermal system, head or bend machine is core mandrel, mandrel has fine coarsens, elbow bend machine in the production process is a process with a curved hole diameter, the back support, under the steel pipe section through the mandrel, behind the mandrel is fixed, through hydraulic mechanical transmission, steel pipe section slowly walked down the mandrel, mandrel induction coil outside,The tube is heated through the induction coil and then an elbow is machined.

The pushed elbow should be corrected in this hot state. If the elbow is not handled properly, it will be twisted and corrected by the mold.Correction mold is the pressure machine with a mold, two semi-circular arc, up and down each one.After correction, the outer diameter of the elbow reaches the size of the finished product.Some customers need to sandblast, beveling, typing, painting elbow

The use of elbow

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