Ductile Iron Pipes 

1. Material: Ductile iron grade 500-7/ 450-10 in accordance with ISO1083

2. Standard: ISO 2531, EN545, EN598, ANSI, AWWA

3. Certificate: ISO9001, ISO14001, SGS, NSF, WRAS

4. Test: In accordance with ISO 2531 / EN 545 / EN598 and 100% water pressure test

5. Length: 6m or cut into 5.6m, 5.7m, 5.8m

6. Internal Lining: Cement, conform to ISO4179

7. External coating: Zinc + Bitumen, conform to ISO8179

8. Rubber: NBR, SBR, EPDM according to ISO4633 / EN681.1

9. Note: The gaskets, bolts & nuts are supplied respectively as your special requirement

2.  Products description and Main dimensions

3.Product Performance of Ductile Iron Pipe

4. 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 including chemical
• components analysis, tensile strength test and etc. 

Laboratory

 

• Chemical Components
• Microstructure Test
• Tensile Strength

  

          

6. Technical Standard: 

 Design: EN545
 Certification: ISO9001:2008 

7. Personnel station:

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

 8. 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.

9.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!