Quality Control
ISO Certification
♦ ISO9001:2015 certificate
Raw Material Control
The steel materials are selected from well-known domestic manufacturers as the suppliers: Shougang, Handan Iron and Steel, Tangshan Iron and Steel, and Wuhan Iron and Steel (to ensure chemical composition and mechanical properties).
Welding & Inspection
Welding is submerged arc welding, and each weld is inspected by a flaw detector (ultrasonic flaw detection). After passing the test, it will continue to the next process.
Runtest before Shipping
After each equipment is completed, it will be installed and run-test in the factory to ensure stable operation of the equipment before it is loaded and shipped.
Tempering Treatment
Gears and shafts are made of forged 45#, 40 chrome, 42 chrome molybdenum, and quenched and tempered.
Casting & Inspection
After heat treatment, the casting spare parts are machined in our factory for processing. After processing, the quality inspection department will conduct quality inspection and flaw detection.
Certifications
Standard:
ISO9001
Number:
ABZB18Q31699R0M
Issue Date:
2020-08-18
Expiry Date:
2021-07-16
Scope/Range:
PRODUCTION AND SALE OF MINING MACHINERY
Issued By:
BCC
![TANGSHAN MINE MACHINERY FACTORY Certifications]()
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Quality management system certification
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2009-05-06
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Product quality integrity unit
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Director unit of China Heavy Machinery Industry Association
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2008-04-05
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Utility model patent certificate
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2014-06-14
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Standard:
ISO9001
Number:
ABZB18Q31699R0M
Issue Date:
2020-08-18
Expiry Date:
2021-07-16
Scope/Range:
PRODUCTION AND SALE OF MINING MACHINERY
Issued By:
BCC
![TANGSHAN MINE MACHINERY FACTORY Certifications]()
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Company Profile
TANGSHAN MINE MACHINERY FACTORY
Contact Person: Amy
