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Pipe bend is the use of a set of bending die mold bending, divided into cold and hot simmer two process.
The use of pipe bend and attention:
1, pure bending, the tube under the action of external force, the outer layer of the wall of the tensile stress and thinning, the internal compression stress.
2, bending accuracy is also one of the factors affecting the quality of elbow.
3, the bending properties and surface corrosion of the pipe itself may also affect the quality of the elbow.