Gaoyang County Changlong Machinery Factory
Product supports OEM and ODM.

A comprehensive manufacturing enterprise specializing in lost foam casting and precision mechanical processing

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Product supports OEM and ODM.
Gaoyang County Changlong Machinery Factory
Product supports OEM and ODM.

A one-stop manufacturer specializing in lost foam casting and precision machining

MORE
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2005

Casting, Machining and Components Company

Factory supply

No middlemen make the difference

Custom

Processing according to customer requirements

Fast delivery

Large inventory is shipped in time

Production process

Changlong Machinery

It can fully meet the large-scale and high-precision production demands of both domestic and foreign customers.

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White mold bonding

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Refractory dip coating

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Buried Sha (vibration modeling)

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Melting

Customized Proprietary Solutions

Ventas de fábrica ▪ Soporte personalizado

WhatsApp

Contact Information

8617317028606

Correo electrónico

Email address

1104855363@qq.com

Product customization support

Changlong Machinery

The company has two fully automatic lost foam production lines and 50 units of various CNC machining equipment.

Coordinate Measuring Machine(CMM)

Coordinate Measuring Machine(CMM)

Tool Presetter / Off-line Tool Setting Gauge

Tool Presetter / Off-line Tool Setting Gauge

Metallographic microscope

Metallographic microscope

Brinell Hardness Tester

Brinell Hardness Tester

Universal Testing Machine(UTM)

Universal Testing Machine(UTM)

Optical Emission Spectrometer(OES)

Optical Emission Spectrometer(OES)

Productos principales

Changlong Machinery

The company has two fully automatic lost foam casting production lines and 50 sets of various CNC machining equipment. Among them, 80% are high-quality imported equipment, such as Mazak, Dali, and Mori Seiki. It has stable and reliable production capacity, producing over 10,000 tons of lost foam castings annually.

It is the main housing of dual-output transmission gearbox, provides installation support for shafts, bearings and gear sets, realizes power output from two ends. Widely used in agricultural machinery and general reduction transmission equipment, adapting to torque transmission under variable-load working conditions.


It is the air intake sealing component of air compressor, which guides air entering the cylinder and plays the roles of sealing and supporting. It is widely used in piston air compressors, adapting to continuous air intake and pressure cycling working conditions.


It is the main shell of the pump, which forms the fluid flow channel and bears working pressure. It is widely used in water supply and drainage pumps, mud pumps, industrial delivery pumps and hydraulic pumps for construction machinery, adapting to medium conveying, certain pressure and continuous circulation working conditions. 


It is the main housing of hydraulic cylinder, which forms the pressure chamber for hydraulic oil. It is widely matched with hydraulic systems of construction machinery and agricultural machinery, converting hydraulic pressure into mechanical thrust to complete lifting, pushing and other actions, adapting to heavy-load and frequent reciprocating working conditions.


It is a key swinging transmission part, which converts rotary motion into reciprocating swing force. It is widely used in agricultural machinery and construction machinery transmission systems, suitable for frequent swing, variable load and impact working conditions.


Multi-groove belt pulley, transmits torque through belt friction, widely used for power transmission in agricultural machinery, air compressors and general mechanical equipment, matches multi-groove belts to drive associated rotating components. 


It is the core pressure-bearing cylinder part of large-bore piston air compressor, forming compression chamber together with piston assembly to complete air suction, compression and exhaust work. Widely used in 12 cubic meter piston air compressors, adapting to high-pressure, continuous cyclic compression working conditions. 


It is the core rotating power component of air compressor, which realizes gas compression through high-speed rotation. It is widely used in industrial screw air compressors and piston air compressors, adapting to continuous high-speed operation, pressure fluctuation and long-cycle working conditions.


Gaoyang County Changlong Machinery Factory

Large-scale casting and machining

Changlong Machinery

Changlong Machinery Factory was established in the 1990s and is a comprehensive manufacturing enterprise specializing in lost foam casting and precision mechanical processing. After more than 20 years of steady development, the company has grown from a small workshop in its initial stage to a large-scale casting and machining manufacturer with two production sites and nearly 100 employees.The total land area of the factory is 50 mu, with a building area of 18,000 square meters and a total asset of nearly 30 million yuan. The company is equipped with two automated lost foam production lines and 50 sets of various CNC processing equipment, of which 80% are imported high-quality equipment from brands such as Makino, Dalianwei, and Senjing Machine. It has stable and reliable production capacity and an annual production capacity of 10,000 tons  of lost foam castings, which can fully meet the large-scale and high-precision production needs of domestic and foreign customers.

changlong
2005

Casting, Machining and Components Company

changlong
18000

Factory building area

changlong
50 +

Numerical Control Machining Equipment

changlong
10000

Annual production capacity

changlong
50

covering an area of 50 mu

Why choose us

Changlong Machinery

We are committed to providing customers with high-quality, custom-made one-stop component manufacturing services according to drawings.

Calidad Superior

Stable large-scale production

Established in the 1990s, after more than two decades of development, it now has two major production areas, standardized workshops and assets worth over 100 million yuan. It has sufficient production capacity and can handle a large number of orders.

Precios competitivos

Outstanding processing accuracy

Equipped with two automated lost foam casting production lines and a large number of imported high-end CNC equipment, it has strong precision processing capabilities and can meet the manufacturing needs of high-precision and customized components.

Entrega oportuna

Quality is fully controllable throughout the process.

There is a standardized physical and chemical laboratory equipped with precise detection instruments such as spectrometers, metallographic microscopes, and three-coordinate measuring machines, enabling full-process quality control from raw materials to finished products.

Soluciones Personalizadas

Continuous technological innovation

Carry out industry-university-research cooperation with universities, continuously upgrade R&D and manufacturing capabilities, and be able to provide one-stop customized component manufacturing services based on drawings.

Soluciones Personalizadas

One-Stop Service

From castiong to precision machining, we handle every step in-house.

Customer praise

图片名称

It can fully meet the large-scale and high-precision production demands of both domestic and foreign customers.

Finished product intact

Finished product intact

The shape of the casting is quite complex, with many internal cavities, which I thought would be difficult to make. I didn't expect the finished product to be very intact, with a clean interior and no residual sand.

Corners perfectly rounded without cutting hands

Corners perfectly rounded without cutting hands

The lost foam casting parts have almost no molding lines, and can be used as appearance parts after surface treatment. The corners are perfectly rounded without cutting hands. The packaging is also tight, without any damage or deformation.

Flatness measured for days with no significant change

Flatness measured for days with no significant change

I am most afraid of deformation when buying it for use as a precision platform. After receiving it, the flatness was measured for a few days and there was no significant change, indicating that the timeliness processing was done well. During processing, the internal stress was evenly released without any cracks appearing.

Stay Informed, Stay Ahead

图片名称

We are committed to providing customers with high-quality, custom-made one-stop component manufacturing services according to drawings.

Industry News

2026-04-17

Heat treatment technology for machine tool castings

Purpose: To reduce the hardness of metal materials, improve plasticity, and facilitate cutting or pressure processing; Reduce residual stress and improve the uniformity of tissue and composition

Industry News

2026-04-17

What are the main technologies for machining machine tool castings

Characteristics: By utilizing the good rigidity of resin sand molds, the strength of the sand mold is maintained during the initial pouring stage. Through the graphitization expansion during the solidification process of cast iron, shrinkage and porosity defects are effectively eliminated, achieving less riser and no riser casting of gray cast iron and ductile iron parts.

CHANGLONG

A comprehensive manufacturing enterprise specializing in lost-wax casting and precision mechanical processing


In terms of quality control, Changlong Machinery has established a standardized physical and chemical laboratory, equipped with advanced testing equipment such as spectrometers, metallographic microscopes, universal tensile testers, three-coordinate measuring instruments, and alignment instruments.

Get In Touch

Book a consultation to further explore the casting solutions.

All the employees of Changlong Company are willing to cooperate sincerely with domestic and foreign merchants and jointly create a brighter future.

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