Yantai Powerful(Qonly) Honing Application CO.,LTD is a powerful professional manufacture of honing stone. Our company has been committed to a comprehensive study of honing process for many years,

Our honing tools are typically designed for American Sunnen horizontal & vertical honing machine

Application:

 • Engineering hydraulic cylinder,

 • Cylinder oil field pump,

 • Coal mine hydraulic prop, the engine liner,

 • Military guns and other deep hole boring and processing areas.

The grits and sizes can be done as the customer's requirements.

We are a professional honing stone supplier, we can do different shape. oil stone, sharpening stone, honing stone

If you want to order ,You can visit our webside: