ZHEJIANG QILONG VALVE CO.,LTD

OUR COMPANY

We make All Kinds Of industrial ball valve types, critical medium service, low temp crogenic and high temp service, underground full weld ball valves, Etc.

Pioneering Leader in the Industry API,ANSI,ISO,JIS,BS,DIN,GOST,GB,etc

Delivering Value for Industry Leaders

1992+

Over 30 years of experience in manufacturing ball valves

Manually operated, pneumatically and electrically actuated ball valves with standard of API/ANSI, ISO,DIN, EN, BS,GB,GOST size: 1/2" to 56",class: 150lb to 2500lb, working temperature -196 degrees celsius to 680 degrees celsius, make general part of Qilong product line. They are widely used in oil & gas industries, petroleumand chemical processing, gas supply facilities and thermal power engineering,LNG pipeline, off shore plate form etc. .

  • 30years experience in manufacturing Established: 1992

  • Annual Sales: 7,000,000USD

  • Export Percentage: 65%

  • Export Area: Eastern & Western Europe, Middle East,Russia, Asia,America, Africa etc.

About The Company

30+

Years of Experrience

180+

Projects Completed

200+

Clients Worldwide

100%

Customer Satisfaction

What we do

We Provide High Quality Products And Excellent Service

Why choose us

We manufacture all industrial ball valves: critical medium, cryogenic, high temp, underground fully welded & more.

The main product is ball and ball valves which are selling to the world wide like Eastern & Western Europe, Middle East,Russia, Asia,America, Africa etc.

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QUALITY SYSTEM

All the valves are executed by good quality control system,reliable inspection tools and well trained QC workers, QILONG people keep the quality as the highest importance to the customers.

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ENGINEERING

Lastest invest in R&D and employment of highly professional engineering staff have led to great flexibility and quick introduction of new valve types. Professional software applications (CAD,CAM, Solidworks,PRO-E,UG,Finite Elements Analysis) deliver more technology innovations reducing cost, improving product quality and accelerating the production cycle.

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Test Report

Cooperated with the CNAS,LLAC qualified test lab, with UT,PT,MT,RT, Chemical and mechanical test Fugitive Emissions, Intergranular Corrosion Test etc.

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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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4 major processes

Quality Control Process

01

Valve raw material control: Visual and dimension inspection, PMI,Wall thickness, Impact test if by request, NDE like PT,UT,MT,RT.

02

Valve component machine process inspection: dimension check, machined surface and parts material check, special request like NDE test by order request.

03

Valve assembly and performance inspection:Each piece of the valve is under hydraulic and air test the performance inspection according to order standard request.

04

Valve Paint, package and delivery

Get The Latest Company Information In The First Place

Top‑Entry Ball Valve: Advantages, Features, Sizes, Pressure Ratings, Materials and Application Conditions

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Qilong Valve Official Website Redesign Officially Launched

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Product Description of High-Pressure Large-Bore Ball Valves for Export to Russia

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0086 13676483642

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