W1: All carton steel with zinc-plated, mainly used in places that have low requirment to corrosion resistance.
W2: Band, Housing all 300 Series Stainless Steel,Screw is Zinc-plated.
W4: Band，Housing and Screw all 300 Series Stainless Steel.
*Edge is no burr-free, it is ability to prevent the tube damaged.
*Beautiful and generous.
*By 48 hours salt and fog test, it has a good corrosion resistance.
*Easy to fix.
This hose clamp is widely used in the pipe connection of automobile pipelines, water pumps, fans, food machinery, chemical machinery and other industrial equipment.
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