ZHEJIANG QILONG VALVE CO.,LTD

Top-Entry Ball Valve

Application Engineering

One Of The Most Experienced Ball Valve Manufacturers In China.

Quality Control Process

(4 major processes)

01

Valve raw material control includes visual and dimensional inspection, PMI (Positive Material Identification), wall thickness measurement, impact testing upon request, and NDE methods such as PT, UT, MT, and RT.

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02

Valve component machining process inspection includes dimensional inspection, machined surface inspection, material verification of components, and special tests such as NDE upon order request.

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03

Valve assembly and performance inspection: Each valve undergoes hydraulic and pneumatic testing in accordance with order specifications and applicable standards.

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04

Valve painting, packing, and delivery are carried out in accordance with order requirements to ensure product protection and safe transportation.

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