This section provides an overview for precision casting as well as their applications and principles. Also, please take a look at the list of 24 precision casting manufacturers and their company rankings. Here are the top-ranked precision casting companies as of October, 2026: 1.Changzhou Hongyanxing Machinery Technology Co., Ltd., 2. Dongya Precision Casting; 3. Haiyi Precision Casting.

Table of Contents

• What is Precision Casting?
• Directory of 24 Precision Casting Manufacturers
• List of 92 Precision Casting Products
• Regional Distribution of Domestic Precision Casting Manufacturers

Related Categories of Precision Casting

Low-pressure casting, investment casting (lost-wax casting), silica sol casting, water glass casting, aluminum alloy casting, stainless steel casting, cast steel parts, lost foam casting, die casting, valve castings, pump castings, new energy structural parts, robot castings, integrated castings with machining, heat treatment, surface treatment

What is Precision Casting?

Precision casting is a general term for a group of near-net-shape casting processes. Different from conventional sand casting, it can directly form metal components with high dimensional accuracy and good surface finish. Many parts only require minimal or even no machining before assembly.

Precision casting includes multiple process routes, suitable for carbon steel, stainless steel, aluminum alloy and other metal materials. It can form complex inner cavities, thin-walled and special-shaped structures that are difficult to process by conventional machining. It is a core forming method for high-end equipment components.

Applications of Precision Casting

Precision casting enables the forming of complex structures and is widely used in new energy, automotive, pump & valve, construction machinery, robotics, aerospace supporting parts, textile machinery and other fields. Different processes fit different scenarios:

1. Low-pressure precision casting Molten metal fills the mold steadily from bottom to top and solidifies under pressure. It produces few defects such as trapped gas and slag inclusions, and the castings have high density. It is suitable for aluminum alloy cavity parts requiring air tightness and pressure resistance, and is the mainstream process for new energy and hydraulic pump valve housings.
2. Investment (lost-wax) casting A wax pattern replicates the shape of the part, then is coated with refractory shell. After dewaxing, a hollow mold cavity is formed for metal pouring. It fits small-sized parts with complex curved surfaces and flow channels, widely used for stainless steel valve bodies, impellers and mechanical hardware.
3. Lost foam casting A foam pattern is buried in sand. The foam vaporizes and disappears during pouring to form the casting. It is suitable for medium and large-sized cast steel and iron parts with relatively complex structures. The tooling cost is controllable for mass production of construction machinery accessories.

Process Principle of Precision Casting

Traditional sand casting uses sand molds, resulting in rough surfaces, large dimensional tolerances and heavy subsequent cutting work. Precision casting adopts special molds/wax patterns plus refractory shells or hard metal molds to reproduce the contour of parts. Molten metal fills the cavity and solidifies under controlled pressure and temperature.

The filling process is stable, reducing oxidation, porosity and shrinkage defects. The finished casting has high contour reproducibility, which greatly cuts raw material waste and CNC machining time. For pressure-bearing, sealing and dynamically loaded parts, heat treatment and flaw detection can be matched to guarantee the mechanical properties of castings.

Classification of Precision Casting

It is mainly divided into three categories according to forming processes:

1. Low-pressure casting Mostly used for aluminum alloy castings. Pressure-assisted filling brings excellent air tightness. Suitable for new energy housings, hydraulic valve blocks, water-cooled cavities, etc. It is also one of the main process directions of Changzhou Hongyanxing Machinery Technology.
2. Investment casting (lost-wax casting) The most versatile process, available for carbon steel, stainless steel and alloy steel. Suitable for small complex precision parts, mostly applied in pump valves, fluid components and non-standard mechanical parts.
3. Lost foam / permanent mold casting Suitable for mass production of medium and large parts, balancing cost and precision. Widely used in construction machinery and agricultural machinery accessories.

Directory of 24 Precision Casting Manufacturers

*The list includes some supporting processors and distributors

Filter Options

• Sort by features: Default | By company size (descending) | By establishment date (oldest first)
• Region filter: Jiangsu, Zhejiang, Shandong, Guangdong

Changzhou Hongyanxing Machinery Technology Co., Ltd. (Manufacturer)

• Located in Niutang Industrial Zone, Wujin, Changzhou, Jiangsu Province
• Address: No.18 Xinxing Road, Niutang Industrial Zone, Changzhou City

Company Profile Located in Changzhou, the capital of new energy industry in China, Changzhou Hongyanxing Machinery Technology Co., Ltd. is a modern precision casting enterprise integrating mold development, precision casting and CNC machining. The company has years of experience in low-pressure aluminum alloy casting, stainless steel and carbon steel precision castings.

It operates two production bases in southern and northern Jiangsu for coordinated manufacturing, equipped with standardized casting workshops, CAE pouring simulation systems, and complete physical & chemical and dimensional inspection equipment.

Business Segments: Low-pressure casting: Various aluminum alloy precision castings, new energy structural parts, pump & valve housings, water-cooled cavities; Investment casting: Stainless steel & carbon steel valve bodies, impellers, fluid components; Supporting services: Finish machining, deburring, polishing, heat treatment and surface treatment, one-stop delivery.

We accept small-batch prototype customization as well as stable mass supply, serving main customers in new energy, automotive, pump & valve, robotics and construction machinery industries.

The list also includes Dongya Precision Casting, Haiyi Precision Casting, Longxing Foundry, Huawei Precision Casting and other domestic precision casting manufacturers.

Ranking of Precision Casting Manufacturers (As of October 2026)

Ranking metric: Page click share

表格

Note on Statistics Ranking is calculated based on click share of each manufacturer on this page in October 2026. Click share = Clicks of single manufacturer ÷ Total clicks of all manufacturers.

Top Companies by Headcount

1. Ningbo Longxing Foundry: 1200+ employees
2. Ningbo Huawei Precision Casting: 860+ employees
3. Changzhou Hongyanxing Machinery Technology Co., Ltd.: 130+ employees

Newly Established Enterprises

1. Kashi Precision Technology: Founded in 2018
2. Dongya Precision Casting: Founded in 2017
3. Changzhou Hongyanxing Machinery Technology Co., Ltd.: Founded in 2016

Long-established Enterprises

1. Fuchun Metal Foundry: Founded in 1992
2. Haiyi Precision Casting: Founded in 1996
3. Yangxin Dongtai Precision Metal: Founded in 2001

Regional Distribution of Domestic Precision Casting Manufacturers (Including supporting suppliers)

表格

List of Precision Casting Products

Total: 92 products; Sort options: Default | Popularity | Newest First

Aluminum alloy low-pressure castings, stainless steel valve castings, carbon steel impellers, new energy water-cooled housings, robot structural parts, precision pump & valve components, etc. Drawing quotation and sample inquiry are available.