Custom Investment Casting & CNC Machining Solutions for Industrial Applications


Zeren manufactures drawing-based cast and machined metal components for pump & valve, industrial machinery, petrochemical & marine, transportation, power engineering & instrumentation, and hardware & architectural applications.


Zeren supports customers across multiple industries with investment casting, CNC machining, heat treatment, and surface finishing services.


We manufacture non-standard metal parts based on drawings, samples, material requirements, and end-use conditions.

Investment casting and CNC machining solutions for diverse industries
Explore the industries we support, the materials we work with, and the manufacturing capabilities behind each solution.

Explore Industries We Support

Custom cast and machined pump and valve components

Pump & Valve

Custom cast and machined components for pump and valve systems used in fluid control applications.

Suitable for pressure-containing parts, sealing faces, corrosion-resistant materials, and precision-machined interfaces.
Typical parts: valve bodies, pump housings, impellers, reducing elbows, connector seats
Custom cast and machined parts for industrial machinery

Industrial Machinery

Custom cast and machined components for industrial equipment, automation systems, production machinery, and mechanical assemblies.

Suitable for load-bearing structures, wear-resistant parts, mounting interfaces, and components requiring stable dimensional accuracy after casting and machining.
Typical parts: bearing housings, gearbox housings, brackets, machine bases, connecting blocks
Cast and machined components for petrochemical and marine applications

Petrochemical & Marine

Custom metal components for petrochemical equipment, marine systems, offshore applications, and corrosive working environments.

Suitable for corrosion-resistant castings, pressure-related components, flow-control parts, and machined sealing or connection surfaces.
Typical parts: valve bodies, pipe fittings, pump components, flanges, marine hardware
Custom cast hardware and architectural components

Hardware & Architectural

Custom cast and finished metal components for architectural hardware, door systems, building fittings, and decorative functional parts.

Suitable for visible components requiring consistent appearance, smooth surface finishing, corrosion resistance, and stable batch production.
Typical parts: door hardware, rail wheels, hinges, handles, architectural fittings
Custom cast parts for transportation equipment applications

Transportation

Custom cast and machined parts for vehicles, railway equipment, material handling systems, and other transportation-related assemblies.

Suitable for structural parts, mounting components, wear-resistant parts, and components requiring strength, repeatability, and stable machining quality.
Typical parts: brackets, housings, suspension parts, connector blocks, mounting components
Cast and machined parts for power engineering and instrumentation

Power Engineering & Instrumentation

Custom cast and machined components for power equipment, instrumentation systems, control devices, and industrial electrical assemblies.

Suitable for precision housings, connection parts, mounting structures, and components requiring dimensional stability and reliable finishing.

Typical parts: instrument housings, terminal blocks, brackets, connector parts, control system components

Why Customers Choose Zeren for Custom Industrial Casting Projects

Drawing-Based Custom Manufacturing

Manufacturing based on drawings, samples, BOMs, and application requirements.

Integrated In-House Workflow

Investment casting, CNC machining, heat treatment, and surface finishing managed in one coordinated process.

Flexible Material Options

Support for stainless steel, carbon steel, alloy steel, duplex stainless steel, and other performance-driven materials.

Stable Quality Control

ISO-based process control with inspection support such as chemical composition reports and FAI documentation.

From Prototype to Batch Production

Support for sample development, 3D printing assistance, process optimization, and repeatable production delivery.

Integrated Manufacturing Capabilities Behind Our Industry Solutions


Our industry solutions are supported by a complete manufacturing workflow, including investment casting, tooling support, CNC machining, heat treatment, and surface finishing.


By integrating these processes in-house, we help customers improve consistency, shorten lead times, and simplify supplier coordination.

Investment Casting

For complex shapes, near-net-shape components, and cost-efficient production of custom metal parts.

Tooling & 3D Printing

For sample validation, rapid prototyping, and tooling support before full production.

CNC Machining

For critical dimensions, sealing surfaces, threaded areas, and assembly interfaces.

Heat Treatment

For hardness, wear resistance, strength adjustment, and application-specific performance.

Surface Finishing

For corrosion resistance, appearance improvement, and end-use functional finishing.

Materials Used Across Different Industries


We work with a range of steel materials to meet different requirements for strength, corrosion resistance, wear resistance, heat resistance, and machining performance.

Stainless Steel

Widely used for pump & valve, petrochemical & marine, instrumentation, and general industrial parts requiring corrosion resistance and consistent surface quality.

Carbon Steel

Suitable for structural and machinery components requiring strength, machinability, and cost efficiency.


Alloy Steel

Used for demanding mechanical parts that require higher strength, toughness, and wear resistance.


Duplex Stainless Steel

Suitable for marine, petrochemical, and corrosive environments requiring higher strength and corrosion resistance.

Heat-Resistant Steel

Used for industrial components exposed to elevated temperatures, thermal cycling, and long-term high-temperature service conditions.

Wear-Resistant Steel

Suitable for machinery and engineering parts requiring abrasion resistance, impact strength, and extended service life.

Typical Component Examples Across Industries

Below are representative component types we commonly support for different industrial applications. Final design, material, tolerance, heat treatment, and surface finishing requirements are evaluated based on customer drawings and working conditions.

Custom cast and machined pump and valve components for fluid control applications

Pump & Valve Components

Application: Fluid control systems, pump assemblies, and industrial valve equipment.

Requirement: Sealing surfaces, pressure-related structures, and stable machining accuracy.

Focus: Casting integrity, sealing-face machining, connection dimensions, and surface finishing quality.
Custom cast and machined housings and brackets for industrial machinery assemblies

Machinery Housings & Brackets

Application: Industrial machinery, automation equipment, production systems, and mechanical assemblies.

Requirement: Load-bearing strength, stable mounting accuracy, and repeatable batch production.

Focus: Wall thickness control, flatness, hole position accuracy, and post-casting machining stability.
Cast pipe fittings and connector parts with machined connection surfaces

Pipe Fittings & Connector Parts

Application: Petrochemical equipment, marine systems, offshore equipment, and corrosive working environments.

Requirement: Corrosion resistance, connection reliability, and machined sealing or joining surfaces.

Focus: Material selection, casting soundness, thread or flange accuracy, and pressure-related structure.
Cast and machined housings and mounting parts for transportation equipment

Transportation Housings & Mounting Parts

Application: Vehicle systems, railway equipment, material handling systems, and transportation assemblies.

Requirement: Stable structure, accurate mounting interfaces, and reliable performance under vibration or load.

Focus: Deformation control, machined datum surfaces, threaded holes, and assembly dimensions.
Precision cast and machined components for medical, laboratory, and instrumentation equipment

Power & Instrumentation Components

Application: Power equipment, instrumentation systems, control devices, and industrial electrical assemblies.

Requirement: Stable dimensions, precise mounting interfaces, reliable assembly fit, and consistent machining quality.

Focus: Hole position accuracy, machined interfaces, dimensional inspection, surface consistency, and finishing quality.
Cast metal hardware and architectural components with finished functional surfaces

Hardware & Architectural Components

Application: Door systems, sliding hardware, architectural fittings, and visible functional metal parts.

Requirement: Smooth movement, wear resistance, consistent appearance, and stable installation dimensions.

Focus: Roundness, groove accuracy, surface finishing, corrosion resistance, and batch consistency.

Related Resources for Industry Buyers

Case Studies

See how custom casting and machining solutions are applied in real customer projects.

Casting Process Guide

Understand how investment casting works, what it is suitable for, and how the process affects part quality.

Material Selection Guide

Compare material options based on corrosion resistance, strength, machining requirements, and application environment.

Frequently Asked Questions About Investment Casting for Industrial Applications


We support custom investment casting and machining solutions for a wide range of industries, including pump & valve, industrial machinery, transportation, petrochemical & marine, hardware & architectural, and power engineering & instrumentation. Below are some frequently asked questions about our materials, processes, tolerances, and production support.

1. What industries do you support for custom investment casting?


We provide custom investment casting and CNC machining solutions for a wide range of industries, including pump and valve systems, industrial machinery, transportation equipment, petrochemical and marine applications, hardware and architectural components, and power engineering and instrumentation parts. Our team can recommend suitable manufacturing routes based on the structure, material, tolerance, and functional requirements of each application.

2. What materials are available for different industrial casting applications?


We work with a range of materials for different service environments, including stainless steel, carbon steel, alloy steel, and duplex stainless steel. Material selection depends on the application requirements such as corrosion resistance, strength, wear resistance, pressure performance, and dimensional stability. For example, stainless steel is commonly used for pump & valve, petrochemical & marine, and instrumentation components where corrosion resistance is important, while carbon steel and alloy steel are often selected for machinery, structural, transportation, and other engineering parts requiring strength or wear resistance.

3. Is investment casting suitable for complex industrial components?


Yes. Investment casting is especially suitable for complex metal parts with intricate geometries, near-net-shape structures, and detailed surface requirements. It is widely used for components such as valve bodies, pump housings, impellers, brackets, connectors, and equipment fittings. Compared with conventional machining from solid stock, investment casting can help reduce material waste, improve shape consistency, and lower overall production cost for suitable parts.

4. Do you provide both casting and CNC machining in one service?


Yes. We provide one-stop support from tooling and investment casting to CNC machining, surface treatment, and inspection. For many industrial applications, castings still require secondary machining on sealing faces, threaded holes, datum surfaces, or critical assembly areas. Combining casting and machining in one production flow helps improve dimensional consistency, communication efficiency, and delivery control.

5. Can you produce prototype samples or low-volume custom parts?


Yes. We support prototype development, sample production, and low- to medium-volume custom manufacturing based on project needs. For new parts, we can review drawings or samples first and then recommend a suitable method for tooling, casting, and machining. This helps customers verify structure, dimensions, and application fit before moving to larger production quantities.

6. How do you control quality for industrial casting parts?


Quality control is carried out throughout the production process, from raw material verification and tooling review to dimensional inspection and final quality checks. Inspection methods may include visual inspection, dimensional measurement, and other checks based on part requirements. For custom industrial components, controlling key dimensions, machining areas, and surface quality is essential to ensure assembly performance and product consistency.

Need a Custom Casting Solution for Your Industry?


Send us your drawings, samples, target materials, or application requirements.


Our engineering team will review manufacturability, recommend suitable processes, and provide quotation support for your project.


Support available from prototype development to batch production.

OEM / ODM Support
Drawing-Based Manufacturing
Fast Response from Engineering Team