The equipment is a special plastic for the production of plastic corrugated pipes (including single-wall corrugated pipes and double-wall corrugated pipes).
Pipe production line equipment, its production of Plastic bellows
The bellows must meet the following technical requirements:
1. Raw material requirements
Plastic corrugated pipe can be selected from HDPE (high density polyethylene), PP (polypropylene), PVC (polyvinyl chloride) pellets, the requirements must be Plastic bellows
For raw granular materials, it is strictly forbidden to use powder
Shape and reconstituted granular pellets. Among them, HDPE needs to meet the requirements of GB/T11116 standard, plastic corrugated pipe production line, PP needs to meet GB/T18742.1 standard.
2, color appearance requirements
The appearance of the plastic bellows should be smooth and uniform in color. The inner and outer walls are not allowed to have cracks in the partitions, bubbles, cracks, lumps and scratches that affect the use.
3, ring steel requirements
The plastic bellows ring stiffness should be no less than 6kN/m2. Prestressed Plastic bellows
The ring stiffness of the bellows is not less than 4 kN/m2.
4, flexibility requirements
After repeated bending five times according to the specified bending method, the cross-sectional diameter is Plastic bellows
The amount of change should be no more than 10% of the original diameter.
5, impact resistance requirements
The real impact rate of the plastic bellows low temperature drop hammer impact test is T1.
6, local lateral load
When the bellows is subjected to 500N lateral partial load, the surface of the pipe is not broken, and the pipe is discharged 5 minutes after unloading.
The amount of residual deformation must not exceed 10% of the nominal inner diameter of the pipe.
7, bellows connection sealing requirements
There is no water leakage inside the corrugated pipe joints, and the joints between the pipes should be tight, without cracking or loosening.