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TANGSHAN MINE MACHINERY FACTORY
TANGSHAN MINE MACHINERY FACTORY
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TANGSHAN MINE MACHINERY FACTORY Quality Info

TANGSHAN MINE MACHINERY FACTORY
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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

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

Company Profile

TANGSHAN MINE MACHINERY FACTORY

Contact Person: Amy

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