Build-to-Print Metal Parts: Your Drawing, Our Precision Manufacturing

We specialize in manufacturing custom metal components directly from your drawings (also known as Build-to-Print or Made-to-Print). Our capabilities include casting, forging, machining, and fabrication — providing a full-service solution for your metal part needs. Whether you require a one-off prototype, a batch of replacement parts, or ongoing production for a proprietary design, we transform your specifications into high-quality, functional components. With our 85-ton heavy casting foundation and full CNC machining precision, we ensure every part meets your exact dimensional, material, and performance requirements.

Full-Service Manufacturing from Your Specifications

We are able to support a wide range of industries and applications, executing projects based on your provided 2D or 3D drawings and technical data packages (TDPs).

• Mining & Heavy Equipment: Crusher components, mill parts, gear blanks, structural frames, wear plates, and custom assemblies.

• Industrial Machinery: Pump housings, valve bodies, actuator parts, custom shafts, and machine tool components.

• Energy & Infrastructure: Turbine components, structural supports, large bearing housings, and custom fabrications.

• Aftermarket & Legacy Support: Direct replacement parts for OEM equipment, reverse-engineered components for discontinued models.

We work with a broad spectrum of materials including carbon steels, alloy steels, stainless steels, and wear-resistant alloys, selecting the optimal material and process for your application.

Complete Build-to-Print Capabilities & Process Range

1. Casting & Forging Components

Ideal for complex geometries, high-volume production, or parts requiring superior grain structure.

• Sand Casting & Investment Casting: For producing near-net-shape parts in various sizes and complexities.

• Heavy Steel Castings: Utilizing our 85-ton single-pour capacity for massive, integral components like crusher main frames or large bases.

• Open-Die & Closed-Die Forgings: For parts requiring high strength, toughness, and directional grain flow (e.g., shafts, gears, connecting rods).

2. Precision Machined Parts

From simple turned parts to complex 5-axis milled components.

• CNC Turning & Milling: Our workshop, fully equipped with Siemens and GSK-controlled CNC machines, handles parts from small precision items to large workpieces.

• Large-Diameter & Heavy Part Machining: Capable of machining cast/forged blanks weighing several tons with high accuracy.

• Specialized Machining: Featuring double-column CNC vertical lathes capable of micron-level precision for critical sealing surfaces, bearing fits, and gear profiles.

3. Fabrication & Weldments

For structural frames, enclosures, and assemblies built from plate and formed metal.

• Cutting: Laser, plasma, and waterjet cutting for precise blank preparation.

• Forming: Press brake and rolling for bending and shaping plate.

• Welding: Skilled welders perform MIG, TIG, and submerged arc welding per AWS/ASME standards, with full NDT capability (RT, UT, MT, PT).

• Assembly: Full mechanical assembly, including fitting of purchased components like bearings, seals, and fasteners per your assembly drawings.

4. Finishing & Value-Added Services

• Heat Treatment: In-house annealing, normalizing, quenching & tempering, and stress relieving.

• Surface Treatments: Shot blasting, painting, plating, and non-destructive testing.

• Quality Documentation: Full First Article Inspection (FAI) reports, material certifications, and test reports as required.

Our Engineering Excellence & Technical Support

Guaranteed Conformance to Print: Every component is manufactured to the exact dimensions, tolerances, and specifications on your drawing. Our quality system ensures strict adherence to geometric dimensioning and tolerancing (GD&T), material calls, and finish requirements. We deliver parts that fit and function as designed.

Heavy Manufacturing Foundation Meets Precision Demands: Our unique combination of large-scale casting/forging capability and advanced CNC machining allows us to handle projects others cannot. We can produce a massive 10-ton casting and then machine its critical features to micron-level accuracy, all under one roof. This vertical integration ensures quality control, reduces lead times, and simplifies your supply chain.

Full Process Control & Quality Assurance: From material sourcing and certification to final inspection, we maintain control over the entire manufacturing process. Our quality team utilizes CMMs, optical comparators, and advanced metrology tools to verify part conformity. We are experienced in supporting audits and providing PPAP (Production Part Approval Process) documentation.

Collaborative Engineering Support: While we build to your print, our engineering team can provide valuable Design for Manufacturability (DFM) feedback, suggest material or process alternatives for cost/performance optimization, and assist with reverse engineering or drawing clarification.

Key Benefits for Your Operation

Accelerate Development & Reduce Time-to-Market: Quickly prototype and scale production of your custom designs with a single, capable partner handling multiple manufacturing processes.

Ensure Supply Chain Security for Critical Parts: Bring manufacturing of proprietary or sole-sourced components in-house or to a trusted partner. Mitigate risks associated with overseas suppliers or single-point failures.

Achieve Cost Efficiency without Compromising Quality: Our in-house capabilities and process optimization often result in lower total cost compared to sourcing from multiple specialized vendors. We help optimize designs for manufacturability to reduce cost.

Maintain Design Integrity & Performance: We become an extension of your engineering team, faithfully executing your design intent to ensure the final part performs as expected in your application.

Simplify Procurement & Logistics: Manage one purchase order, one quality contact, and one shipment for complex parts that may involve multiple manufacturing steps. We deliver finished, ready-to-install components.

How to Initiate a Build-to-Print Project

To receive a comprehensive quotation and manufacturability review, please provide:

1. Complete Engineering Drawings: 2D PDFs or 3D CAD files (STEP, IGES, SLDPRT, etc.) with all views, dimensions, tolerances (GD&T), and notes.

2. Technical Data Package (TDP): Include material specifications, heat treatment requirements, surface finish, special testing (NDT), and any applicable industry standards (e.g., ASME, ASTM, DIN).

3. Part Function & Application Context: Brief description of the part's use, operating environment, and critical interfaces. This helps us provide better DFM advice.

4. Target Quantities & Production Schedule: Prototype quantity, initial order volume, and forecast for ongoing needs.

5. Quality & Documentation Requirements: Specify any required certifications (material test reports, FAI reports, inspection protocols).

Contact Us for a Quote or Technical Consultation

Submit your drawings and requirements for a detailed analysis and quote. Our engineering and manufacturing team is ready to partner with you to bring your designs to life.

Disclaimer: Jinyang provides contract manufacturing services per customer-provided specifications and drawings. The customer retains all intellectual property rights to the design and is responsible for its fitness for purpose and regulatory compliance. Jinyang's responsibility is limited to conformance with the provided manufacturing instructions.