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Reliable Supplier of Precision Metal Components

Tousin Metal is an experienced precision metal manufacturer serving customers through five core product families: Precision Castings, Valve & Pump Fittings, CNC Machining Parts, Customized Products and Auto Parts. Our precision casting team supports lost-wax components in carbon steel, stainless steel and alloy steel, while our valve and pump specialists focus on reliable flow-control bodies, fittings and related components. CNC machining capabilities provide accurate dimensions, repeatable tolerances and consistent surface quality for both cast and machined parts. For unique applications, our Customized Products service turns drawings, samples and performance requirements into practical manufacturing plans. Our Auto Parts range supports durable components for vehicle systems and industrial mobility applications. Every project is managed through drawing review, material verification, tooling, controlled production, dimensional inspection and final quality documentation. With responsive engineering, modern testing equipment and export experience, Tousin Metal helps buyers coordinate development, production and delivery through one accountable supplier. We welcome standard orders, OEM programs and long-term sourcing partnerships that require dependable quality, clear communication and continuous technical support.

Company News and Blogs

Original review diagram for galvanic isolation stainless castings, comparing direct metallic contact, insulating washer only, complete isolation arrangement, protective coating system.

Galvanic Isolation for Stainless Castings in Mixed-Metal Assemblies

Review mixed-metal casting joints for electrical paths, moisture, isolation durability and mechanical function before approving the assembly.

Original review diagram for stainless casting thread galling, comparing improve thread cleanliness, change mating material, use an approved lubricant, adjust installation method.

Preventing Galling in Machined Threads on Stainless Castings

Review galling in machined stainless casting threads through mating materials, cleanliness, lubrication compatibility and controlled assembly trials.

Original review diagram for casting corrosion test coupons, comparing standardized coupon test, process-verification specimen, representative assembly trial, field observation.

Corrosion Test Coupons vs Service Trials for Stainless Castings

Compare laboratory corrosion coupons with assembly and service trials. Align surface preparation, exposure, observations and acceptance decisions.

Original review diagram for Charpy impact steel castings, comparing good impact strength, test at low temperature, supply impact certificate, retest if necessary.

Charpy Impact Requirements for Low-Temperature Steel Castings

Define low-temperature casting impact requirements with the correct specimen, temperature, material condition, lot linkage and acceptance basis.

Original review diagram for hardness vs tensile testing castings, comparing check a local indentation property, report elongation, screen process consistency, preserve a finished component.

Hardness vs Tensile Testing for Steel Castings: Different Evidence, Different Decisions

Understand what hardness and tensile tests establish for steel castings. Review conversions, test locations and separate acceptance requirements.

Original review diagram for casting test coupons, comparing separately cast bar, attached coupon, component extraction, special qualification casting.

Casting Test Coupons: Separately Cast Bars vs Component Samples

Compare separately cast bars, attached coupons and component samples. Plan specimen locations, processing history and mechanical-test evidence.

Product Process of Tousin Metal

1

Drawing Review for Customized Products

Customer drawings, samples and performance requirements are reviewed before production. Engineers confirm materials, tolerances, tooling, machining needs and inspection standards so Customized Products begin with a clear and practical manufacturing plan.

2

Material Selection for Precision Castings

Material grades are selected according to strength, corrosion resistance, temperature and application requirements. Chemical specifications and incoming materials are verified before Precision Castings move into tooling and controlled production stages.

3

Tooling Preparation for Precision Castings

Tooling and wax patterns are prepared to reproduce detailed geometry accurately. Process engineers control shrinkage allowances, gates and critical dimensions to support stable, repeatable Precision Castings throughout sample and mass production.

4

Controlled Pouring for Precision Castings

Ceramic shells are prepared, heated and filled under controlled conditions. Melting temperature, pouring practice and cooling time are monitored to help Precision Castings achieve sound structure, consistent dimensions and dependable mechanical performance.

5

Heat Treatment for Auto Parts

Selected Auto Parts receive controlled heat treatment to improve strength, hardness, toughness or wear resistance. Each cycle follows material requirements, with temperature records and verification checks supporting consistent component performance.

6

Surface Finishing for Customized Products

Customized Products can receive polishing, blasting, coating, plating or other specified finishes. Surface preparation and final appearance are checked carefully to meet functional, corrosion-resistance and presentation requirements for each project.

7

CNC Programming for CNC Machining Parts

Engineers prepare CNC programs, fixtures, tools and inspection points from approved drawings. This setup controls machining sequence and repeatability so CNC Machining Parts can meet dimensional, geometric and surface-finish requirements.

8

Precision Production of CNC Machining Parts

CNC Machining Parts are produced with controlled cutting parameters and in-process measurement. Operators monitor tools, datums and critical features to maintain stable tolerances, clean surfaces and repeatable quality across production batches.

9

Machining Valve & Pump Fittings

Valve & Pump Fittings are machined for accurate sealing surfaces, threads, bores and connection dimensions. Process checks help ensure reliable assembly, controlled flow paths and consistent fit within fluid-handling equipment.

10

Assembly and Joining for Auto Parts

Auto Parts that require welding, fastening or subassembly are completed under documented procedures. Connection strength, alignment and functional interfaces are checked to support safe installation and dependable service performance.

11

Dimensional Inspection and Quality Testing

Precision Castings, Valve & Pump Fittings, CNC Machining Parts, Customized Products and Auto Parts receive dimensional inspection and applicable material or performance testing before approval, with records prepared for customer review.

12

Final Packaging and Delivery Coordination

Approved components are cleaned, protected, labeled and packed according to size and transport requirements. The team coordinates documents and export delivery so all five product families arrive organized and ready for use.

Why Tousin Metal Precision Metal Products?

  • One Stop Precision Metal Solutions
  • 20+ Years of Manufacturing Experience
  • 12+ Designers to Help Your Business
  • Direct China Precision Metal Manufacturer
  • 24/7 After-Sales Service Commitment