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Zhejiang Yongding Valve Co. Ltd.
Address: Wenzhou City, Zhejiang Province, Yongjia County Oubei five - star industrial area on the 3rd Jingdong Road
Tel: 86-0577-67321126 67920318 67920317
Cell phone: 86-13732008686
Contact: manager Chen 13758737865
Fax: 86-0577-67995661
QQ:1813139209
URL: http://www.yongdingv.com
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| Factory inspection |
Current position : Home > About us > Factory inspection |
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1 all valves and main parts of the valve, the factory must be tested before they can leave the factory. Diameter greater than or equal to DN200mm of various valves, in the product before the factory, the buyer has the right to the seller's factory witness test.
2 the pressure part of the valve and its accessories shall be in the factory for hydraulic strength test, the test pressure is 1.5 times the nominal pressure, the pressure of 10 minutes, with no leakage and no structural damage to the qualified.
The 3 valve assembly should be carried out after the sealing of the hydraulic pressure test, the test pressure is 1.1 times the nominal pressure, pressure for 10 minutes, with no leakage is qualified.
4 according to the provisions of API 598 0.6MPa gas seal test.
The 5 valve assembly should be carried out after the opening and closing test, to ensure the flexibility of operation and is fully open and fully closed position right.
6 matters according to relevant regulations, standards. |
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