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Quality Control

From raw material to export packaging, every batch follows a documented process of cold heading, thread rolling, heat treatment, surface treatment and inspection.

  1. 1

    Raw Materials

    Verified alloy steel, medium carbon steel and stainless steel with mill certificates.

  2. 2

    Cold Heading

    Efficient cold forming on multi-station bolt former machines with tight dimensional control.

  3. 3

    Thread Rolling

    High-speed thread rolling machines produce accurate, strong threads.

  4. 4

    Heat Treatment

    Quenching and tempering achieve the required property class for 8.8, 10.9 and 12.9 grades.

  5. 5

    Surface Treatment

    Nickel plating, black oxide, galvanizing or Dacromet coating as specified.

  6. 6

    Inspection & Packaging

    Dimensional, hardness and appearance checks, then automatic packaging and export packing.

Production Equipment

High-Speed Tapping Machines
Multi-Station Bolt Former Machines
High-Speed Thread Rolling Machines
Combination Thread Rolling Machines
Heat Treatment Equipment
Dacromet Continuous Coating Line & Electroplating Line
Intelligent Optical Sorting Machine
Automatic Packaging Machines
Professional Testing Laboratory