Email: sales@boltmfg.com 
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  IFI Standard
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Quality Assurance

Bolt MFG. Trade Ltd. Haiyan is committed to a high level of quality in the products that we produce and stock for you, our customer. Commitment to this principle is the key element in our firm¡®s philosophy and an important factor in our ability to maintain the high level of service and quality that is an everyday part of our business.


This commitment helps provide our consistent high level of service, combined with our concern for the customer¡®s needs, making Bolt MFG.Trade Ltd. an excellent source for your fastener requirements.

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We have a qualified technical team that is able to conduct

mechanical and physical testing and inspection.



Our Measurement and Test Capabilities Include:


¡öTensile Strength

¡öProof Load
¡öHardness
¡öThread Functional Diameter
¡öThread Major Diameter
¡öSocket Broach Depth
¡öLinear Measurements
¡öDiameter Measurements

¡öPlating thickness









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