DUNHUI provides a full range of forged steel pressure flanges, which are manufactured in accordance with DIN, BS, ANSI, AS, JIS,and other industry standards. Whenever you need special flanges i.e. high alloy, low temperature, high strength, high pressure, specialized dimensions and etc.

The best quality and faith bring us the good market, such as USA, CANADA, BRAZIL, AUSTRALIA, UK, GERMANY, ITALY, SPAIN, TURKEY, ALGERIA, DUBAI, RUSSIA, UKRAINE, SINGAPORE, MALAYSIA etc. “Made in DUNHUI” in many Countries.

“DUNHUI” is your correct choice. Welcome to visit 

1.         Large-diameter carbon steel welding neck flange JIS B2220-1984

2. Materials  Specifications   and Type

3. Product Process

4. Carbon steel flange pictures

5. Technical Standard: 

 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 19 km to Tianjin  International Airport, and very close to major highways,TIANJIN port. We look forward to work with your business!