Pvc drain pipe standard and its specifications

  PVC drainage pipe, which is a kind of pipe fitting, is made of a sanitary grade PVC or PVC resin as the main raw material, and then added with a proper amount of stabilizer, lubricant, filler, coloring agent, etc., extruded through a plastic extruder. A tube made by injection molding and injection molding, and then passed through a series of processes such as cooling, solidification, shaping, inspection, and packaging.


  Commonly used PVC drain pipe specifications are mainly based on nominal outer diameter, respectively 32mm, 40mm, 50mm, 75mm, 90mm, 110mm, 125mm, 160mm, 200mm, 250mm, 315mm, 400mm, 500mm, most PVC drain pipe specifications have A certain gap, this is normal. The length of the PVC-U pipe is generally 4m or 6m, and other lengths are determined after negotiation between the supplier and the buyer.


  In general, the resin material used for the PVC drain pipe should be PVC-SC5 resin or PVC-SG4 resin, that is, a polyvinyl chloride resin with a polymerization degree of 1200-1000. In addition, thermal stability systems must be added at the time of design, and selection should be made according to actual production requirements, and attention should also be paid to synergistic effects and countermeasure effects between heat stabilizers.


  PVC drains are designed to incorporate impact modifiers, usually with CPE and ACR impact modifiers. Depending on the other components of the formulation and the plasticizing ability of the extruder, the amount is preferably from 8 to 12 parts. CPE impact modifiers are relatively inexpensive and have a wide range of sources, while ACR impact modifiers have higher aging resistance and weld angle strength.

Created on:2019-04-22 09:01