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Why Can We Always Ensure Excellent Quality

Quality Control

The bearings and seals of our company's hobs are imported from Europe and the United States. Through

strict control of tool mechanism design, material smelting, forging, machining, heat treatment and assembly,

we ensure the quality of our company's tools is long. Excavation creates preconditions.

The company makes full use of the cooperation advantages of “production, learning, research and use”, and

cooperates with famous domestic universities, materials research institutes, shield/TBM construction units for

a long time, actively develops and develops new materials for knife ring, and has developed on the basis of the

original H13. A variety of knife ring materials. Its material properties cover all layers of soft, medium and hard,

meeting the requirements of long-distance tunneling in shield/TBM construction.

Hunan Hedun Engineering Tools Co.,Ltd.

Hunan Hedun Engineering Tools Co.,Ltd.Hunan Hedun Engineering Tools Co.,Ltd.

Certification

Hunan Hedun Engineering Tools Co.,Ltd. Certifications
Standard: Shield cutter professional production line
Number: 171812052073
Issue Date: 2018-08-02
Scope/Range: Shield cutter
Hunan Hedun Engineering Tools Co.,Ltd. Certifications
Standard: ISO9001:2005
Number: 91430211MA4L47LWXC
Issue Date: 2017-11-30
Expiry Date: 2020-11-29
Scope/Range: Production of engineering tools
Hunan Hedun Engineering Tools Co.,Ltd. Certifications
Standard: ISO9001:2005
Number: 91430211MA4L47LWXC
Issue Date: 2017-11-30
Expiry Date: 2020-11-29
Scope/Range: Production of engineering tools
Hunan Hedun Engineering Tools Co.,Ltd. Certifications
Standard: GB/T 28001-2001/OHSAS 18001:2007
Number: 91430211MA4L47LWXC
Issue Date: 2017-11-30
Expiry Date: 2020-11-29
Scope/Range: engineering tools Occupational health management
Hunan Hedun Engineering Tools Co.,Ltd. Certifications
Standard: business license
Issue Date: 2016-05-09
Expiry Date: 2036-05-08
Scope/Range: Production of engineering tools
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