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The forming limit of pipe fitting machinery shall include th

The forming limit of pipe fitting machinery shall include the following contents:  

1) The maximum elongation deformation in the tensile deformation zone outside the neutral layer does not exceed the allowable plastic value of the material, resulting in fracture;  

2) In the compression deformation zone inside the neutral layer, the thin-walled structure under the action of tangential compressive stress does not exceed the instability and wrinkle;  

3) If the pipe fitting has the requirement of ovality, control the distortion of its section;  

4) If the pipe fitting has the strength requirement to bear the internal pressure, the forming limit of the wall thickness reduction should be controlled.  

Our company mainly produces pipe bending machine, tee machine, medium frequency elbow machine, medium frequency pipe expanding machine, pushing machine and other pipe fitting equipment.  And mainly sold to the United States, India, Malaysia and other countries, won the customer's unanimous praise and buyback.