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  • Ball Valve
  • Gate Valve
  • Check Valve
  • Globe Valve
  • Butterfly Valve
  • Low-temperature Valve
  • Forging Steel Valve
  • Strainer
  • DIN Valve
  • Contact us TEL: +86- 0577-67333310
    FAX: +86- 0577-67376736

    ADD: Dongou Ind. Zone, Oubei Wenzhou Zhejiang , China.

    Quality Control HOME >> Quality Control

    Quality Control


    In order to In order to assure our customers that  UNIQUE  products and services fully meets their quality requirements, our internal procedures and processes are strictly according to ISO 9001:2008 standard. The Quality Management System is applicable to the manufacture of valves.

    UNIQUE developed an extensive and advanced inspection and test facilities to control the quality from rough casting/forging to final products. These facilities enable us to do Positive Material Identification (PMI), Radiographic test(RT), Ultra-sonic test(UT), Dye-penetration test, Magnetic particle test, Impact test, Tensile test, Hardness test, Fire-safe test, Cryogenic test, Vacuum test, Fugitive emission test, Pressure test. 

    1. All our valves are 100% Pressure tested prior to dispatch.

    2. We can supply either 3.1B certification or Certificate or Conformity.

    3. We accommodate other 3rd Party or user inspection by prior agreement.




    We strive to supply quality products to our customers, and perform rigorous quality checks at each stage of our manufacturing process.




    Product Warranty

    Our product warranty period should be 18 months from the date of shipment or 12 months after installation, whichever occurs first. Once the products are prove to be defective in material or workmanship, provided in each case that the product is properly installed or is used in the service f or which we recommends it , then written claim which specifying the alleged defect, should be presented to us within our product warranty period. We'll replace the defect products without charge or refund the purchase price of the products. The warranty stated in this paragraph is in lieu of all o the warranties, either expressed or implied. With respect to warranties, this paragraph states buyer's exclusive remedy and seller's exclusive liability.