Flange joint is a connection of pipes, where the connecting pieces have flanges by which the parts are bolted together.

Pipe flange refers to the flange used for piping in the pipeline device, and when used on equipment, refers to the inlet and outlet flange of the equipment. There are holes in the flange, and the bolts tightly connect the two flanges. The flanges are sealed with gaskets. Flanges are divided into threaded connection (threaded connection) flange, welding flange and clamping flange. Flanges are always used in pairs, low-pressure pipelines can use wire flanges, and welding flanges can be used with pressures above four kilograms.


1/2”-60” NPS (DN15-DN3000)



Blind Flanges
Welding Neck Flanges
Slip on Flanges
Lap Joint Flanges
Socket Welding Flanges
Threaded Flanges
Orifice Flanges
Long Welding Neck Flanges


Carbon Steel Flange: ASTM A 105
Stainless Steel Flange: ASTM A 182
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