+86-576-87355618    david@enginevalve.com.cn
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Material&Quality Control
Contact us
Tel: +86-576-87355618
Fax: +86-576-87355628
Add: Auto&Motor Industrial Zone, Yuhuan, Zhejiang, China.

: enginevalve@hotmail.com
: david@enginevalve.com.cn
Quality Control Home>Quality Control
Six Characteristics

Professional production technics:

Some many kind of valve expert
machinery, according to the product request.

Fine and appropriate material:

We just choose high quality valve expert steel which is able to bear friction, high temperature, rust and high strength:40Cr, 4Cr9Si2, 4Cr10Si2Mo, 21-4N, and so on.
 

No Defect Surface:

Fine inner circulation's control, advance QPQ surface treatment technics and 100% inspection before delivery make sure the surface of each final valve to be no defects.

Strict Tolerance Control:

Adopt the most advanced checkout equipments and technics make the circinal tolerance of valve cone is less than 0.005mm,the tolerance of valve stem is less than 0.01mm.

High Wearing Index:

Fine material and advanced surface treatment technics make the hardness of nitridinged valve reach more than HV800,the hardness of chromeplated valve reach more than HV500.

Well-designed package and special treatment:

Well-designed package and special treatment avoid bruising and rusting in long distance shipments.

 

 

Testing equipment
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