2016-1-10
   
 
PRODUCTS
production procedures
production device
survey device
material standard
survey standard
warehouse procedures

 
 
survey standard
   1. head style

   2. types of drive inserts

   3. thread type

   4. nominal length

   5. tolerance standard ISO2768
   2. thread outer diameter standard
   3. stainless steel thread mechanical character
   4. thread standard
   5. hardness conversion
   6. handness and strength conversion
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