PREMIUM QUALITY SINCE ZHONG HAI

[ PRODUCT CATEGORIES ]

Flange Styles .

Steel Flange

FLANGE
Carbon Steel Flanges

FLANGE
Stainless Steel Flanges

FLANGE
ANSI Standard Flanges

FLANGE
JIS B2220 Steel Flanges

FLANGE
EN1092 Steel Flanges

FLANGE
Non-Standard Forged Flanges

In modern industrial applications, standard off-the-shelf flanges often fall short of meeting the unique demands of specialized equipment and extreme ...

FLANGE

EXPERTS IN FORGED AND MACHINED FLANGES

[ WHO WE ARE ]

About Us .

Established

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Employees

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Tons / Month Capacity

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Jiangyin Zhonghai Precision Machinery Co., Ltd. is an ISO 9001–certified manufacturer with PED/TS qualifications, specializing in pipe flanges and precision forgings. With in-house forging, machining, heat treatment, and testing, we can produce to GB, ASME, ASTM, JIS, DIN, and EN standards, as well as fully customized parts based on customer drawings.

01.

Specification Coverage

Our production range spans sizes from 1/2” to 60”, with single-piece weights up to 10 tons and maximum dimensions reaching 4 meters.

02.

Applicable Scenarios

This comprehensive scope ensures reliable solutions for both standard and non-standard flange applications.

Industries We Serve

We manufacture flanges and forgings for applications that demand safety, sealing, and reliability. With controlled processes and strict quality management, we ensure accurate materials, structures, pressure ratings, and machining.

Oil & Gas

Ensuring the safe conveyance of oil, gas and chemical feedstocks alongside the stable operation of reactors constitutes an indispensable connecting hub within chemical production.

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Petrochemical & Chemical

In petrochemical production, pipelines conveying raw materials, intermediates, and finished products (such as crude oil, natural gas, acid-alkali solutions, organic solvents, and other media) require ...

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Power & Boiler

Flanges serve as core connecting components within the power generation sector (including thermal, nuclear, and renewable energy) and the boiler and pressure vessel industry. They fulfil critical seal...

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Semiconductor & Instrumentation

Within the conductive materials and instrumentation sectors, flanges serve as pivotal components that simultaneously fulfil functions of connection, sealing, installation positioning, thermal manageme...

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Oil & Gas
Petrochemical & Chemical
Power & Boiler
Semiconductor & Instrumentation

LEADING MANUFACTURER OF FORGED FLANGES

[ OUR MANUFACTURING ]

Sizes and Standards
Meeting Every Need .

We offer flange products across 150 lb to 2500 lb pressure ratings and sizes up to 4 meters, covering a wide range of pipe diameters. All items are manufactured to GB, ASME, JIS, EN, DIN and other applicable standards and undergo strict quality inspection.

Drilling Machine

Equipped with a positioning device, it ensures precise hole placement, which is crucial for the sealing and stability of the flange.
Petrochemical & Chemical

Cut the edges of the flange to ensure they are flat and smooth, facilitating subsequent machining and assembly.
Inspection

When required, qualified third-party inspection agencies are engaged to ensure accuracy, traceability, and full compliance with relevant standards.

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