1. Products are designed, manufactured, and inspected in strict accordance with relevant standards. Customers can supervise according to JB / T3595, GB / T12232, GB / T12234, GB / T12235, GB / T12236, GB / T12237, GB / T12238 and other standards.
2. Forged and cast steel parts are strictly collected into the factory according to GB / T12229, GB3077, ZBJ98015, ZBJ98016, JB / T5263, ASTM and other material standards, and you can check the physical and chemical performance inspection report.
3． The design, manufacture and production of product parts meet the requirements of "three modernizations", and have series, interchangeability and versatility.
4． The sealing surface width, hardness, thickness, material, etc. meet the design and JB5211-91 standard requirements. All sealing surfaces leave the factory after non-destructive inspection.
5． The internal cavity of the valve surface is shot blasted and sanded, and the internal cavity is cleaned with a high-pressure anti-rust liquid. Ensure that the inner cavity of the product is clean and free of rust, which meets the requirements of exported products.
6. The outer circumference of the valve stem is all finely ground, and the surface of the high pressure valve stem is treated with anti-oxidation, which is wear-resistant and corrosion-resistant. Make sure there is no leakage from the dynamic seal.
7. Three guarantees will be implemented within 18 months after the product is sold . It is confirmed that this is a quality problem of our factory.
8. The whole process of the product is in accordance with the requirements of the ISO9001 quality management system standard, and traceability control is implemented to ensure that each part can be traced to the human, machine and supplier.
9. The products are 100% tested according to GB / T13927, API598, JB / T9092, JB / 3595, etc. The pressure test time is 1.5-2 times longer than the standard time.