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Why Can We Always Ensure Excellent Quality

Quality Control

ISO Certification

♦ ISO9001:2015 certificate

TANGSHAN MINE MACHINERY FACTORY

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).

TANGSHAN MINE MACHINERY FACTORY

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.

TANGSHAN MINE MACHINERY FACTORY

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.

TANGSHAN MINE MACHINERY FACTORY

Tempering Treatment

Gears and shafts are made of forged 45#, 40 chrome, 42 chrome molybdenum, and quenched and tempered.

TANGSHAN MINE MACHINERY FACTORY

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.

TANGSHAN MINE MACHINERY FACTORY

Certification

TANGSHAN MINE MACHINERY FACTORY 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
TANGSHAN MINE MACHINERY FACTORY Certifications
TANGSHAN MINE MACHINERY FACTORY Certifications
Standard: Quality management system certification
Issue Date: 2009-05-06
Scope/Range: Product quality integrity unit
TANGSHAN MINE MACHINERY FACTORY Certifications
Standard: Director unit of China Heavy Machinery Industry Association
Issue Date: 2008-04-05
TANGSHAN MINE MACHINERY FACTORY Certifications
Standard: Utility model patent certificate
Issue Date: 2014-06-14
TANGSHAN MINE MACHINERY FACTORY 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
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