Non standard flat welding flange

Non standard flange is a kind of flange relative to the national standard or some foreign standards. Because the standard flange in some special occasions can not meet the use, it needs to transform some standard flanges to form a non-standard flange.

Recently, our customers in Fuzhou encountered a problem. Due to the on-site construction conditions, the outer diameter of steel pipes, the design of supporting connecting valves and other factors, we found that the American Standard, European standard and Japanese standard flanges currently used could not meet the above requirements at the same time. The on-site construction encountered difficulties. The customers consulted us and explained the on-site situation. Our technicians, according to the customer’s construction drawings, communicated with the site personnel and engineering designers. After several days of discussion, they modified the flange from the aspects of outer diameter, inner diameter, center distance of bolt holes, number of bolt holes, flange thickness, etc., so that the flange can meet the requirements of the site. Help customers solve problems.

The data are as follows:

Product

DN

Flange outer diameter

Flange inner diameter

Center distance of bolt hole

Bore diameter

Number of bolt holes

Thickness

QTY

Flat Flange

DN100

215

117.3

178

18

8

12.7

30

Flat Flange

DN 150

280

171.3

235

22

8

17.5

6

Flat Flange

PN 16 DN100

185

90.3

146

18

4

12

12

Flat Flange

PN 16 DN150

215

115.9

178

18

8

13

16

Flat Flange

PN 16 DN200

280

170.5

235

22

8

17

16

Flat Flange

PN 16 DN100

335

221.8

292

22

8

19

16

Flat Flange

PN 16 DN250

405

276.2

356

22

8

22

4

Flat Flange

PN 16 DN65

165

77.1

127

4

12

8

After the completion of production, according to the needs of the customer’s engineering site and the anti-corrosion requirements, we recommend the blue epoxy resin coating to the customer. The photos are as follows.

Non standard flat welding flange

Non standard flat welding flange

If you need non-standard flange, please contact us.

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