Inspectionj:

Method:
1Appearance by visual inspection, the structure size to test with the cursor cards or tape measure
2 Rubber ring inside to apply X-ray perspective wire test.
3 Inspection of Physical Character
1> Rubber tensile strength, elongation at break, tearing permanent deformation of the test should conform to the provisions of GB/T528
2> Rubber brittleness temperature test should comply with the provisions of GB/T1682
3> Vulcanization of rubber and fabric ply adhesive strength test should be comply with the provisions of GB/T532
4> Hot air aging test of rubber shall meet the requirements GB/T3512
4Flat-shaped metal flange connector or the appearance to perform visual method of detection, size and application of a vernier caliper or tape measure test
5 Pressure and Vacuum Test
a>Refer to GB/T5567-1994 provison 2--5 to test vacuum
b>Product test pressure of bursting pressure test can refer to the regulations of 6 GB/5563-1994
6Test method for the displacement products should according to the requirements of Appendix A
7Product quality testing should be consistent with the provisions of GB/T5750 and GB/T17219
Store,package, transportation, mark
1Products with the following signs: manufacturer name, product name, specifications, model, production date, such as: Henan Changmao Yuan Valve Co., Ltd., rubber joints, DN300, and production date.
2Finished products should be packaged. Packaging according to customer needs, the product packed by boxes, cartons, packaging containing a valve Co., Ltd. Henan Changmao products certificate and related documents.
3Transportation,store
1>Products in the transportation, storage process should to prevent direct sunlight exposure, sharp scratches, rain and snow soaked cream, to avoid contact with acid, alkali, or organic solvent
2>Product should be stored in dry, ventilated warehouse, storage temperature is -15-- 40 centigrade .