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Pex Fittings Wholesale Inspection by zheng ppsu
Active 1 year ago 1 member
Basic Information:
  • There are many PEX Fittings Wholesale manufacturers. The raw material of F1960 Fittings is polypropylene (random copolymer polypropylene). The products produced by F1960 Fittings using different brands of raw materials have certain differences in performance. In addition, the production line grades are different. The quality of the F1960 Fittings produced varies greatly. When using F1960 Fittings, it must be installed before
    There are many manufacturers of PPR pipe fittings and pipes. The raw material of F1960 Fittings is polypropylene (random copolymer polypropylene). The products produced by F1960 Fittings using different brands of raw materials have certain differences in performance. In addition, the production line grades are different. The quality of F1960 Fittings produced by manufacturers has a large gap between good and bad. When using F1960 Fittings, it must be inspected before installation. F1960 Fittings can only be used after the quality is qualified. The selected F1960 Fittings should first have the quality inspection report of the quality inspection department. Among them, the F1960 Fittings used for drinking water should also have the sanitary performance inspection report of the sanitation inspection department, and then the appearance quality of the pipes and fittings and the pipe diameter and Wall thickness, when inspecting F1960 Fittings, the following items are mainly inspected according to national standards:
    1. The appearance of F1960 Fittings. The color of F1960 Fittings should be basically the same. The inner and outer surfaces of F1960 Fittings should be smooth and flat, free of dents, bubbles and other surface defects that affect performance. F1960 Fittings should not contain visible impurities; the surface of F1960 Fittings should be smooth and flat without cracks. Bubbles, peeling and obvious impurities, severe shrinkage, uneven color, decomposition and discoloration.
    2. The opacity of F1960 Fittings. F1960 Fittings should be opaque.
    3. The pipe diameter and wall thickness of F1960 Fittings. According to GB/T18742.2-2002 national standard, F1960 Fittings pipes are divided into five series according to size: S5, S4, S3.2, S2.5, and S2. F1960 Fittings series S has a corresponding relationship with the nominal pressure. F1960 Fittings specifications are represented by tube series S and nominal outer diameter dn* nominal wall thickness en. F1960 Fittings mainly inspects the nominal outer diameter and average outer diameter of pipes and their correspondence with the pipe series The wall thickness, the socket size of the pipe fittings and the corresponding nominal outer diameter.
    4. The physical and mechanical properties and chemical properties of F1960 Fittings. F1960 Fittings hydrostatic test, melt mass flow rate, thermal stability test under hydrostatic state, longitudinal shrinkage rate of pipes, and simply supported beam impact test are in compliance with national standards. F1960 Fittings can check the content of the material inspection report And the content of the retest report.
    5. Whether the hygienic performance of F1960 Fittings meets the national standards. F1960 Fittings This item can check the sanitary performance inspection report of F1960 Fittings by the sanitation inspection department.
    6. Applicability of F1960 Fittings system. After F1960 Fittings are connected to the pipe fittings, they should pass the combined test of 8760 hours of internal pressure and 5000 thermal cycles.

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