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· The characteristics of the Pipe fitting stainless steel reducer
· The forming of seamless steel pipe
· Analysis of main causes causing the decline of bend quality
· Manufacturing process of pipe tee
· Brief introduction of forged fitting
· The Stainless Steel Welding Ellipsoidal Head Pipe Cap heat treatment method
· Processing method of Seamless Steel Pipe Elbow


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Analysis of main causes causing the decline of bend quality
Source :admin   Time:5/7/2018 9:58:35 PM   hit:

  1. In pure bending, the outer wall of the outer layer of the pipe is thinned down under the action of external force, and the inner side is compressed under stress. Thickening and resultant force change the cross section of the pipe. Based on this factor, various pressure levels are clearly defined, so as to ensure quality.

  2, the side of the material is pulled at the bend, and the neutral axis of the inner compression is different from the bending method. The neutral axis is about 1/3 from the outer wall when the top bending type (compression bending) works. The neutral axis is in the 2/3 of the outer wall when the bending (back bending) works. Therefore, bending of thin walled pipes is beneficial to rotary bending.

  3. The accuracy of bending tire is also one of the factors that affect the quality of ASTM A234 180 Degree Pipe Bend.

  4, the bending property and surface corrosion of the tube itself may also affect the quality of the bend.

  5, now provide R. (bending radius / tube outer diameter) will also affect the quality of the bend.

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