MATERIAL · MACHINING · ASSEMBLY · TESTING · DELIVERY

From material to
flow control.

Follow the manufacturing journey behind every industrial valve—from the first quality gate to project dispatch.

SCROLL TO FOLLOW THE PROCESS ↓

05 CONTROLLED STAGES / CNZG

A manufacturing path you can understand.

PROCESS / 01

Material control

Incoming materials and cast or forged components establish the first quality gate in the manufacturing sequence.

PROCESS / 02

Precision machining

Dedicated machining units support valve bodies, sealing surfaces and critical connection features.

PROCESS / 03

Assembly

Assembly, in-process records and operator checks are presented as one understandable manufacturing sequence.

PROCESS / 04

Testing

Pressure testing, non-destructive examination and quality records support product verification.

PROCESS / 05

Delivery

Finished products move through preparation, storage and dispatch ready for project delivery.

BEHIND THE MANUFACTURING FILM

Behind every frame is one operating system.

Zhejiang Zhonggong Valve Group Co., Ltd. is headquartered in Oubei, Yongjia, Wenzhou, with manufacturing operations across Wenzhou, Lishui and Qingtian. The group brings valve research, engineering, manufacturing and sales into one operating system.

The Oubei headquarters houses administrative, research, sales, quality-control and process-management functions. The group has five subsidiaries, including three wholly owned subsidiaries and two controlled companies.

The product portfolio is organised around GB, HG, API, ANSI, JIS and DIN standard systems and covers ball, butterfly, gate, globe, check, bellows, plug, power-station, forged-steel, stainless-steel, API and other industrial valves.

Read the full company profile ↗

COMPANY HISTORY

Six milestones shaped today’s manufacturing network.

The key milestones from the company’s original history material show how its manufacturing footprint and group structure developed.

011998Foundation
The predecessor factory was established in Oubei Puyi Industrial Zone and was later renamed Yongjia Zhonggong Valve Factory.
022002Expansion
Production expanded and moved to Oubei Wuxing Industrial Zone under the name Zhejiang Zhonggong Valve Co., Ltd.
032003Expansion
A manufacturing subsidiary was established in Qingtian, Lishui, later renamed Zhejiang Zhonggong Valve Group Qingtian Zhonggong Valve Co., Ltd.
042009Group development
The company became Zhejiang Zhonggong Valve Group Co., Ltd., with registered capital of RMB 56.78 million and four subsidiaries.
052019Capability investment
The group invested in intelligent production and testing equipment, with registered capital increasing to RMB 127.78 million.
062023Digital transformation
A digital-workshop transformation programme began to improve production efficiency and specialised manufacturing capability.

PRODUCT FAMILIES

The manufacturing story
leads into the product system.

Browse 273 products ↗

Gate ValvesZ941W-25P

Electric Flanged Gate Valve

Butterfly ValvesD343W6/10/16/25P

Large Bore Flanged Butterfly Valve

Ball ValvesBQ41F-16/25P

Integrated Insulated Ball Valve

Ball ValvesQ347F-150LB

Worm Gear Fixed Flanged Ball Valve

Power Station ValvesCNZG-2030

Power Station Valve

Ball ValvesCNZG-2305

Ball valve

Butterfly ValvesCNZG-2306

Butterfly valve

API ValvesCNZG-2307

Api valve

APPLICATION ROUTES / 08

Understand the duty by industry, then move into products and RFQ.

Application-led routes help project teams frame valve requirements across process industries, energy and infrastructure.

01Oil & GasExplore product routes ↗02PetrochemicalExplore product routes ↗03Coal ChemicalExplore product routes ↗04Power & EnergyExplore product routes ↗05Pharmaceutical & Fine ChemicalExplore product routes ↗06Metallurgy, Mining & AluminiumExplore product routes ↗07Pulp & PaperExplore product routes ↗08Urban Infrastructure & WaterExplore product routes ↗

QUALITY EVIDENCE

Build verifiable trust through existing certificates and process capability.

This presentation uses the company’s current certificate images and confirmed quality context without extending unclear certification scope.

PROJECT ENQUIRY / CNZG

Define the duty.
Build a better RFQ.

Send medium, pressure, temperature, nominal size, material and actuation requirements so sales and technical service can start with useful project information.

From material to
flow control.