Auto parts DONGYING SHENGYU METAL PRODUCT CO.,LTD , https://www.shengyuaccessories.com
Inspection quantity: full inspection.
Inspection method: check the product's quality of qualified documents, Chinese signs and inspection reports.
2. The bolt ball must not have burned, cracked or wrinkled.
Number of inspections: Each specification is randomized by the amount of 5%, and not less than 3.
Test method: observation and surface flaw detection with 10 times magnifier.
3. The bolt ball thread size shall comply with the provisions of the current standard "general thread size" GB 196 coarse thread, thread tolerances must comply with the current standard "common thread tolerances and fits" GB 197 6H grade accuracy requirements.
Number of inspections: Each specification is randomized by the amount of 5%, and not less than 3.
Inspection method: Use a standard thread gauge.
4. The size and allowable deviation of bolt ball diameter, roundness, and the angle between the adjacent two bolt hole centerlines should meet the requirements of GB50205-2001 “Code for Acceptance of Construction Quality of Steel Structure Engineeringâ€.
Number of inspections: Each specification is spot checked by quantity in 5%, and not less than 3.
Inspection method: check with caliper and indexing head.
5. Allowable deviation of bolt ball machining inspection quantity: 10% for each specification, and not less than 5.
1. The materials used for the bolt ball and the manufacture of bolted ball joints shall comply with the current product standards and design requirements for their varieties, specifications and performance.