BL Flange

Flange is a method of connecting pipes valves, pumps and other equipment to form a piping system.Application: oil,

chemical industry, water conservancy,electric power, boiler, machinery,  metallurgy,sanitary, construction etc.

Blind flange

A blind flange is a round plate which has all of the relevant blowholes except center hole, and because of this feature the blind flange is usually used to close off the ends of a piping systems and pressure vessel openings. It also permits easy access to the interior of a line or vessel once it has been sealed and must be reopened.
Without the blind flange it would be difficult to perform maintenance or repairs on a pipeline. The flow would need to be s

hut off at the nearest valve, which could be miles away from the repair area. Valves are also very expensive and are prone to sticking. The blind flange is a much more cost efficient way of sealing a pipe.
Blind Flanges are commonly used in petrochemical, pipe engineering, public services and water treatment etc.

Flanges Types

slip on flange ,welding neck flange ,blind flange ,plate flange ,socket welding flange ,

long welding neck flange ,orifice flange ,loose plate flange


carbon steel :ASTM A105 ,A694.A36,Rst37.2,C22.8,SA350 LF2/LF1,Q235,Q345,etc

stainless steel :304,304L,316,316L,A182,etc

alloy steel :ASTMA182,F11,F12,F60,F22,etc

Marking type

forged or forging


ANSI B16.5/B16.47/B16.48/B16.36,ASME ,MSS SP44,API ,AWWA




Pressure grade

ANSI B16.5 B150Lbs, 300Lbs, 600Lbs, 900Lbs, 1500Lbs, 2500Lbs















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