- 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.