Hebei Longxu Pipe Equipment Manufacturing Co., LTD specializes in the production of elbow, tee, reducing pipe, large and small head, flanging, elbow, flange, compensator, metal hose, head, pipe cap, etc. 09MnNiDR Bend process:

1. In pure bending, the outer arm wall of the intermediate layer is thinned by tensile stress &1 under the action of external force distance M, while the inner compressive stress is reduced. The resultant force N1 and N2 changes the cross section of the pipe. Based on this factor, the main reasons for the quality decline of the elbow are RX and SX. Therefore, in GBJ235-82, the RX value and the external thinning quantity under various pressure classes are clearly stipulated, with the purpose of controlling the value of RX and SX, so as to ensure the quality.

2. As mentioned in the previous section, when bending the pipe, the outer side of the material is pulled, while the inner side of the neutral axis is at a different position from the bending method. When working with the top bending (compression bending), the neutral axis is at a place about 1/3 away from the outer wall, and when working with the rotary bending (return bending), the neutral axis is at a place about 2/3 away from the outer wall. Therefore, it is beneficial to use the rotary bending method for thin-walled pipe bending.

3. The precision of bend is also one of the factors affecting the quality of bend. When we manufacture bent tires, except for the specification and size required to be controlled within a certain tolerance range, we also require the user to choose the corresponding bent tire according to the bend pipe diameter during use.

The company also sells 09MnNiDR pipe cap, 09MnNiDR tee, 09MnNiDR size head, 09MnNiDR flange and so on

Company product quality is reliable, abide by the contract, timely supply, welcome new and old customers to order!