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Quality

Our Certificate


                    

                    
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Testing Equipment

Testing Equipment

Testing Equipment

Testing Equipment

Testing Equipment

Testing Equipment

Beauty starts with
the details

In the field of fasteners, we place a strong emphasis on quality. That is why we exclusively utilize premium raw materials and employ a team of quality control experts to ensure that every product leaving our factory is free of defects. Our manufacturing and quality control departments work together in collaboration to produce best-in-class, high-quality products.


Our Check Points

01Treatment

ITEMStanadrdTool
lreatmentNo burrs, cracks, zinc thicknessSalt test machine
Sizeside of head and lengh of boltscallipers
Threaddeep, edge No burrs, cracksgo-no fixed gauges

02Thread

IEMStanadrdTool
chemical elementDifferent material, different chemical element Read moreChemical element analyzer

03Standard

ITEMStanadrdTool
Hardnessfor 8.8 bolts
<M16 bolts22HRC<hardness<32HRC
>M16bolts25HRC<hardness< 35HRC
For 10.9 bolts
Allsize
34HRC<hardness<41HRC
For 12.9 bolts
All size
39HRC<hardness<44HRC
READ MORE
Hardness Tester
Strengthfor 8.8 bolts
<M16 bolts need >800MPA
>M16boltsneed> 830MPA
For 10.9 bolts
All size need >1040MPA
For 12.9 bolts
All size need >1220MPA
READ MORE
Microcomputer Control
Universal Testing Machine

Keep keeping up with

technological innovation and process improvement, keep changing, always on the road

Our bolts

Our bolts

Thread---more sharp and standard pitch

Substandard fasteners

Substandard fasteners

Hebei Yunteng promise that all cold machine thead rolling machine are imported from Taiwaill and Germany

Grade 8/10/12 bolts

Grade 8/10/12 bolts

Finish---must pass tensile test and hardness test

Nonstandard fasteners

Nonstandard fasteners

Hebei Yunteng promise that all bolts and nuts ( 8.8 bolts/10.9 bolts/12.9bolts) after heat treatment must pass tensile test and hardness test

Zinc bolts-black bolts

Zinc bolts-black bolts

Finish---Bling and Anti-corrosion

Nostandard fasteners

Nostandard fasteners

Hebei Yunteng promise that all bolts and nuts must pass Salt spray test experiment and do zinc bolts rust

Our package

Our package

Package---Thickened pallet and corner guards, export quality, more sturdier

Nonstandard package

Nonstandard package

Hebei Yunteng promise that a when customers receive the goods, the packaging will be same as when we shipped them Gloves and desiccant will be put into each carton!

Safeguarding quality is a team effort

Manufacturing high quality fasteners is a team effort involving engineers, production personnel, and in-house quality inspectors.  Our testing equipment provides accurate data readings and is supported by our quality inspectors' keen sense of sight, ensuring we meet your specifications.


Safeguarding quality is a team effort

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