ISO9001 Non Standard Zinc Plated Black 303 Weld SS Bolts

Black zinc plated 303 Stainless steel weld bolt.

Description

303 stainless steel is an austenitic free-cutting stainless, wear-resistant acid steel. In order to improve the performance of the steel, no more than 0.60% of molybdenum can be added to the steel to resist ablation.
Mechanical properties of 303 stainless steel after annealing and stress relief, the tensile strength is 515MPa, the yield is 205MPa, and the elongation rate is 40%.
303 is a free-cutting stainless steel that contains sulfur and selenium, respectively, and is used in occasions that mainly require free-cutting and high surface finish.

Black zinc is used to passivate the black after electroplating zinc. Black zinc plating is a kind of metal anti-oxidation processing, and the black passivation film can be used for decoration, matting and solar heat absorption.

It should be noted that the surface of the black zinc-plated zinc should be black and bright.

First, choose a good passivation solution. The difference between different brands of passivation solution is very large.

Second, the temperature and time control during passivation are different. The product needs different passivation time.

Third, is to pay attention to the drying method.

Factory Diaplay

Plating line

Test equipments

Q1:If you can not find on our website the product you need how to do?

You can send the pictures/photos and drawings of the products you need by email , we will check if we have them. We develop new models every month, Or you can send us samples by DHL/TNT, then we can develop the new model especially for you.

Q2:Can You Strictly Follow The Tolerance on The Drawing And Meet The High Precision?

Yes, we can, we can provide high precision parts and make the parts as your drawing.

Q3:How to Custom-made (OEM/ODM)

If you have a new product drawing or a sample, please send to us, and we can custom-made the hardware as your required. We will also provide our professional advices of the products to make the design to be more realized & maximize the performance.

Q4:Which mode of transport would be better?

In general, the production are heavy, we advice to make delivery by sea, Also we respect your views of other transportation as well.