You are here: Home / About Us / Quality Control

Quality Control

For raw materials
  • Material control from raw materials. For raw material checking, we check 100% by chemical liquid. Any property mistakes would be rejected.
  • Sand hole inspection after raw materials are machining before polishing.
  • Carbon component report can be provided if needed
  • Mechanics test report can be provided if needed
For New products
  • 2nos of new samples to be checked against technical drawing. Testing report is provided to customers before bulk production.
For finished products
  • For valves, pressure testing and temperature testing is required for each valve.
  • After we get the finished products, we check for surface roughness, thickness equality, roundness, size measurement and sand holes again.
  • For all finished products, the checking quantity is not less than 10% of total quantity.
  • Before shipment, we check for the quantity of each product in order to find out any missing quantity or wrong product.
  • Finally, we use strong package to prevent the products from any damages.

PRODUCT CATEGORY

QUICK LINKS

CONTACT US

  Office Add: 1306-1B, 1188, YONGDING ROAD, LONGWAN DISTRICT,WENZHOU CITY,CHINA

 Factroy Add: No. 8-9 Chengzhong Rd, Yaqian Industrial Zone, Yongxing, Longwan, Wenzhou, China
  Factory  2 Add: No. 165, Shacheng Rd, Longwan, Wenzhou, Zhejiang, China.

  86-577-86658709, 86658735,                            86658725

  86-577-86658703

  sales008@jo-neng.com
      info@jo-neng.com
  86-15869600665
  info@jo-neng.com

Copyright  2019 Co., Ltd. All Rights Reserved