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Home
About
Company profile
Office environment
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Services
Chemical composition testing
Microstructure testing
Fastener performance testing
Magnetic Particle Inspection Testing
Hardness test
Dynamic performance testing
Dimensional measurement tests
Heat treatment testing
News
Company News
Industry Information
Enquiries
Application
Recruitment
Contact
CN
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GB_T 3098.9-2020 Mechanical properties of fasteners Effective moment type steel lock nuts
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GB_T 3098.10-1993 Mechanical properties of fasteners Bolts, screws, studs and nuts made of non-ferrous metals
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GB_T 3098.7-2000 Mechanical properties of fasteners Self-extruding screws
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