china high quality decorative solid glass crystal ball

Production steps
Heading:
In the first step, heading machines cut wire into short lengths and form it into spherical shapes between dies.

Deflashing:
The flash line, a ridge left by the forming dies, is removed as balls roll between heavy,cast iron plates.

Soft Grinding:
Similar to deflashing, except that a grinding stone is used to improve precision.

Heat-treating:
Carbon steel balls are next carburized and hardened. Heat treatment imparts the desired hardness and case depth.

Descaling:
This step removes the residues and by-products from the heat-treating process.

Hard Grinding:
Slow, meticulous grinding assures proper sizing and sphericity, with tolerances as closeas ±.0001".

Lapping:
Several proprietary lapping processes can bring balls to the requirements of ISO 3290 Grade10 - 48.

Finishing:
Proprietary chemical and mechanical processes give the balls their final micro-smoothed finish, for increased wear resistance and product longevity.

We are chinese steel ball manufacturer.

Our main products are stainless steel ball, chrome steel balls, carbon steel balls, brass balls, copper balls, tungsten carbide balls, aluminum balls, Flying saucer balls, ceramic balls, glass balls, plastic balls.  

Q: Are you trading company or manufacturer?

A: We are factory.

Q: How long is your delivery time?

A: Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.

Q: Do you provide samples? Is it free or extra?

A: Yes, we could offer the sample for free charge but do not pay the cost of freight.

Q: What is your terms of payment?

A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.
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