ZHEJIANG QILONG VALVE CO.,LTD

Full Weld Ball Valve

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West Coast 10 to 17 days

Midwest 7 to 17 days

East Coast 10 to 17 days

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Fully Welded Ball Valve – Fully Welded Ball Valve

Product Overview

The Fully Welded Ball Valve features a forged steel body with an all-welded construction, eliminating the use of bolts and nuts. This design completely removes potential external leakage paths at the body joints, making the valve especially suitable for long-distance pipelines, buried installations, and maintenance-free service applications.

The forged body provides uniform wall thickness and a regular internal structure, effectively avoiding common defects associated with cast valves, such as shrinkage cavities, pinholes, cracks, and sand holes. As a result, the valve offers superior pressure resistance, structural integrity, and long-term reliability.


Product Range

Body Materials:

ASTM A105, LF2, F304/304L,F316/ 316L, and other materials upon request

Nominal Diameter:

2" ~ 48"  DN50~DN1200

Pressure Rating:

Class 150 ~ Class 1500  PN6 ~PN250

Applicable Standards:

API 6D,API607,API6FA, ASME,ASTM, ANSI, ISO,BS5351, DIN, GB, GOST33259, etc.


Main Features

1. Fully welded body construction

Eliminates body flange joints and bolting, preventing external leakage and reducing maintenance requirements.

2. Forged steel material

Ensures uniform thickness, high mechanical strength, and resistance to pressure and pipeline stress.

3. Ideal for buried and pipeline service

Suitable for underground installation, long-distance transmission pipelines, and severe operating conditions.


Design Features

1. Integral Valve Structure

One-piece welded body provides excellent structural strength and sealing reliability.

2. Corrosion Resistance & Sulfide Stress Resistance

Materials and design are suitable for corrosive environments and sour service conditions.

3. Welded Transition Pipe Ends

Valve can be supplied with welded transition pipe ends for direct pipeline welding, ensuring system integrity and reducing installation time.

What we do

We Provide High Quality Products And Excellent Service

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Application Engineering

One Of The Most Experienced Ball Valve Manufacturersa In China.

Quality Control Process

(4 major processes)

01

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

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02

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

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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.

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04

Valve Paint, package and delivery

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