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.