Blind flange

Blind flanges according ASME B16.5 / B16.47 type A/B are often used in installations, piping systems or in equipment construction to close an open pipe end. Nijhuis & Wigger can supply suitable blind flanges for every quality, pipe size and pressure class.

More Info

Available pressure classes: 150 lbs – 2500 lbs / 2.000 – 20.000 PSI
Type A and B available
Dimensions up to 60”
Different sealing surfaces available like RF, FF, LRF, RTJ or according specification
Stock item (see stock programme in downloads)

We deliver blind flanges in the following material grades:

ASME standard

Carbon steel

A/SA105N / C21, P265GH

A/SA350 LF2 / P355QH1

A/SA182 Gr. F1,F5,F9,F11,F12,F22,F91.

A694 Gr. F52,F60,F65,F70

Stainless steel

A/SA182Gr. 304/304L

A/SA182Gr. 316/316L

A/SA182 F321(H)

F51(Duplex) / F53(Superduplex)

Special Alloys

Hastelloy C276/C22 Standards

According to the ASME standard blind flanges are separated in:

ASME standard	Pressure class
B16.5 – B16.47 A/B	150 lbs
B16.5 – B16.47 A/B	300 lbs
B16.5 – B16.47 A/B	400 lbs
B16.5 – B16.47 A/B	600 lbs
B16.5 – B16.47 A/B	900 lbs
B16.5 – B16.47 A/B	1500 lbs
B16.5 – B16.47 A/B	2500 lbs

This Product does not have data sheet.

Threaded flange

Threaded flanges according ASME B16.5 are often used in installations, piping systems or equipment construction. These flanges are screwed onto the pipe ends using the screw thread. Nijhuis & Wigger can supply suitable threaded flanges for every quality, pipe size and pressure class.

Lap Joint flange

Lap Joint flanges according ASME B16.5 are often used in installations, piping systems or in equipment construction to weld on a pipe. Nijhuis & Wigger can supply suitable Lap Joint flanges for every quality, pipe size and pressure class.

Welding Neck flange

Welding Neck flanges according ASME B16.5 / B16.47 are often used in installations, piping systems, appendages or in equipment construction. Nijhuis & Wigger can supply suitable Welding Neck flanges for every quality, pipe size and pressure class.