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Changsha Tianhe Drilling Tools and Machinery Co.,Ltd. Quality Control

Hi Lory Do you have stock of the 10" (254mm) DHD380 bits, same as the ones I got last year? Please quote price and availability Thanks

—— Piet

Hi Lacy We received your hammers, it works well.

—— Carlos

Hi Kenny The quality have been accepted by our customers.Thanks for all your suggestion,also good after sales service.we'll place another order.

—— Mohammed

It’s surprised for your performance , we will place repeated order.

—— Rodrigo

Excellent quality and fast delivery.

—— Brett

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QC Profile

Quality Control:

1, Raw material selection, we purchase the high-quality steel and strictly control the material composition and size, it main includes the detection of the shape, diameter, reamed diameter, length composition, and flaw of the raw material, besides, we marked every different piece of materials before transferred to the warehouse.

 

2, In strict accordance with the ISO2009:2008 international standards for production. Carefully control every step of the production, complete each of the production process, the production process is including banking, forging, pre-treatment, rough turning, fine turning, heat treatment and carburizing, quenching, tempering, double heat treatment, then storage. Each working procedure was full inspected, after the qualification, then move to next working procedure, which to ensure the 100% qualified rate.

 

3, Re-inspect all key working procedure, mainly through the visual inspection and sampling observation, then, numbered, packing and arrange the shipment.

 

 

Quality Management Process 
 
 1. Material Vendor Assessed
 2. Incoming Materials Inspected
 3. In-process Product 100% Check
 4. Random Check after Final Packaging
 
Photos
 
 
 
Certifications
  • Standard:QUALITY MANAGEMENT SYSTEM CERTIFICATE

    Number:00116Q22035R0M/4300

    Issue Date:2016-03-03

    Expiry Date:2019-03-02

    Scope/Range:DESIGN,MANUFACTURE And SERVICE Of ROCK DRILLING EQUIPMENT And TOOLS

    Issued By:CQC

  • Standard:Supplier Assessment

    Number:16337973-P+T

    Issue Date:2017-04-19

    Expiry Date:2018-04-19

    Scope/Range:DESIGN,MANUFACTURE And SERVICE Of ROCK DRILLING EQUIPMENT And TOOLS

    Issued By:SGS

  • Standard:Supplier Assessment Certificate

    Number:16337973-P+T

    Issue Date:2017-04-19

    Expiry Date:2018-04-19

    Scope/Range:DESIGN,MANUFACTURE And SERVICE Of ROCK DRILLING EQUIPMENT And TOOLS

    Issued By:SGS

Contact Details
Changsha Tianhe Drilling Tools and Machinery Co.,Ltd.

Contact Person: Ms. Spring Huang

Tel: 86-731-85853289

Fax: 86-0731-85853289

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