The high quality Flexible coupling

DUNHUI is specialized in producing a full range of ductile iron pipe fittings, and Construction Products. Including the following aspects:

 “DUNHUI” is your correct choice. Welcome to visit 

1.    The high quality  Flexible coupling

2.  Products description and Main dimensions

3. Production process

Quality Control Groups

• Dimensions Test
• Manufacture process Inspection
• Process Inspection including sand cleaning, assembling, packing and coating
• Final Inspection including delivery marks and etc.
• Particular Tests for different products, such as Load Test, Hydro Test and etc. 

Raw Material Inspection

 

• Raw Material inspection including chemical
• components analysis, tensile strength test and etc. 

Laboratory

 

• Chemical Components
• Microstructure Test
• Tensile Strength

          

    

     

    

    

5. Technical Standard: 

 Design: EN545
 Certification: ISO9001:2008 

6. Personnel station:

  Have professional salesmen, and 6 Engineers, More than 30 inspectors. 

 7. Quality and Safety:

We have a very strict and complete quality control system, which promises that goods we produced are always of the best quality, the enough inspectors to ensure that each product can meet the quality requirements of customers. We do the final inspection in own factory with ISO 9001:2008.

8.Location:

 DUNHUI has a convenient location at the city’s exporting business zone, Dongli District. We are only 9 km to Tianjin  International Airport, and very close to major highways,TIANJIN port. We look forward to work with your business!