Welding Flanges

Welding flanges are flanges that use welds to connect. Most of these flanges are hollow flanges, characterized by burrs or no burrs on the body.

It’s a bit confusing to say that there are burrs and no burrs, but you can just imagine that this flange has or doesn’t have protruding steel parts.
Another point for you to distinguish is that the central round hole of the flange does not have threads.

Welding Flanges Specifications

Welding Flanges have many dimensions and many standards. So in this case we should do base on Flanges Table.

Specifications of flanges made according to JIS B2220

JIS 5K. flange standard specification


JIS 10K. flange standard specification


JIS 16K. flange standard specification


JIS 20K. flange standard specification


Specifications of flanges made according to DIN. standards 

DIN 2576 – PN6. flange standard specification


DIN 2576 – PN10. flange standard specification


DIN 2544 – PN16. flange standard specification


DIN 2544 – PN25. flange standard specification


DIN 2544 – PN40. flange standard specification


Specifications for flanges made according to ANSI

Standard Specifications of 150. Series ANSI Flanges mat-bich-thep-ansi-150

Standard Specifications of the 300. Series ANSI Flanges

mat-bich-thep-ansi-300 🔥🔥🔥 In addition to the 2 series  150 & 300  which are common goods, ANSI flanges also have other lines such as  400, 600, 900, 1500, and 2500. You can see more in the table below (Documents are quoted from the standard). ASME/ANSI B16.10/19).

Flange Standard Specification BS 4504 – EN 1092 

BS 4504 PN6. flange standard specification


Specifications of BS 4504 PN10. flange standard


Specifications of BS 4504 PN16. flange standard


Specification of BS 4504 PN25. flange standard


Specifications of standard flange BS 4504 PN40


Application of welding flange

Welding flanges are commonly used in pipeline projects. You can find them at:

  • Fire protection system
  • Urban water supply system
  • Oil transmission system
  • Gas pipeline system


Some applications of welding flanges

Hopefully, the knowledge that Tiger Steel provides above will be useful to you. If you need to buy steel flanges, you can contact Tiger Steel.

In addition to welding flange products, Tiger Steel trades in black steel pipes, galvanized steel pipes, black box steels, galvanized Hoa Phat, SeAH, …; cast steel pipe, large diameter steel pipe. Steel pipe fittings of all kinds, fire protection accessories,

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