Stainless Steel Ladder Pull Handle

High Quality stainless steel ladder pull handle square can be fixed on shower door, hotel door, room door, bathroom door, coffee shop door, office door, etc. The handle is made of thickened material, which can ensure a longer product life cycle.

Salt spray test

Salt spray test is an environmental test that mainly uses artificial simulated salt spray environmental conditions created by salt spray test equipment to evaluate the corrosion resistance of products or metal materials. 304 stainless steel products are used in many machinery and parts production, as well as food contact products.

Salt spray test includes neutral salt spray test, acetic acid salt spray test, copper salt accelerated acetate salt spray test, and alternating salt spray test.

1. Neutral salt spray test (NSS test) is the earliest and most widely used accelerated corrosion test method. It uses 5% sodium chloride salt solution, and the pH value of the solution is adjusted in the neutral range (6-7) as the solution for spraying. The test temperature is 35℃, and the sedimentation rate of the salt spray is required to be between 1-2ml/80cm*h

2. Acetic acid salt spray test (ASS test) is developed on the basis of neutral salt spray test. It is to add some glacial acetic acid to the 5% sodium chloride solution, so that the pH value of the solution will be about 3, the solution will become acidic, and the final salt spray will also change from neutral salt spray to acidic. Its corrosion rate About 3 times faster than the NSS test

3. Copper salt accelerated acetic acid salt spray test (LRHS-663P-RY) is a new rapid salt spray corrosion test developed abroad. The test temperature is 50 °C. Induce corrosion. It corrodes about 8 times faster than the NSS test

4. The alternating salt spray test is a comprehensive salt spray test, which is actually a neutral salt spray test plus a constant temperature test. It is mainly used for cavity-type complete machine products. Through the penetration of the tidal environment, the salt spray corrosion is not only generated on the surface of the product, but also inside the product. conversion, and finally check whether the electrical properties and mechanical properties of the whole product have changed.

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