Stainless Steel Block Flange

QS Flange: Yuyao Stainless Steel Block Flange

Forged stainless steel block flange per ANSI B16.5, 1/2 to 24 inch, 150LB raised face, for blocking or temporarily blocking a pipeline end.

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One-Minute Overview

Solid stainless steel flange that blocks or temporarily blocks a pipeline end.
Forged, 1/2 to 24 inch, 150LB with a raised face for gasket sealing.
Corrosion-resistant and environmentally friendly in wet or outdoor service.
Bolts between standard flanges as a positive, visible isolation point.

The stainless steel block flange is a solid plate flange used to block or temporarily block the end of a pipeline. Forged from stainless steel and dimensioned to ANSI B16.5, it covers 1/2 to 24 inch in the 150LB class with a raised face. Its corrosion-resistant, environmentally friendly construction suits lines that sit outdoors or carry aggressive media, and the blank disc gives a positive, visible shut-off that a closed valve cannot guarantee.

Name: Stainless Steel Block Flange
Size: 1/2"-24"
Pressure: 150LB
Material: Stainless Steel
Flange Face: RF
Standard: ANSI B16.5

Block flanges sit at line ends, at future branch points, and across sections that must be opened for maintenance: bolt one in and the section is positively isolated for inspection, testing or tie-in work. The raised face takes a standard 150LB gasket, and the forged stainless body stays sound in corrosive or outdoor environments. Specify the size to match the mating flanges, confirm the bolt circle, and tighten in a star pattern so the disc seals evenly.

FAQ

Q1. Is a block flange just a fancy dinner plate for my pipeline?

It is a solid steel disc with a bolt circle, so closer to a very serious dinner plate. Jokes aside, it blanks off a flange joint completely: no flow, no bypass, no guessing. Use it at line ends, at future branches, or anywhere a section must be provably shut for work.

Q2. What standard and class govern this block flange?

The flange follows ANSI B16.5 dimensions and the 150LB pressure class, with a raised face for gasket seating. Bolt circle and drilling match standard flanges of the same size and class, so it drops into the joint with the mating flanges and the specified gasket.

Q3. Where do people actually use these block flanges?

At the end of a header, at a branch that will be built later, and across lines that get opened at every shutdown. Stainless steel keeps the disc corrosion-free outdoors, and the visible blank tells everyone on site that the section is genuinely isolated.

Q4. What payment terms do you accept?

T/T, L/C at sight and other internationally accepted terms. The exact terms are agreed with you before production starts, because the payment schedule has to match the order value, the shipping method and the delivery schedule you need — which is also why we confirm them up front rather than after shipment.

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