| Material&Quality Control |
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| 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. |
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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. |
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+86-576-87355618 
sales@enginevalve.com.cn
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