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Pipe Flanges

Pipe Flanges

Pipe Flanges are an integral part of piping used to join two consecutive pipes or rather block to end the pipeline. A pipe flange is either a ring type, collar or a circular blank disc either welded or screwed to the pipe. Flanges are used in pairs connected by bolted joint and provides strength to the pipeline. A flanged joint is second most used method of joining after welding and is versatile in terms of maintenance

Ferrobend is a manufacturer of pipe flanges with full range of sizes, types and material. We also supply complete flange set with companions such as gaskets, stud bolts, bolt sleeve, spectacle blind, spade, spacer and orifice plate. Weld neck, slip-on, socket weld, threaded, lap joint, blind are 6 basic types of pipe flanges offered by Ferrobend. We also produce long weld neck and large diameter flanges

Pipe Flange Types

Flange Companions

Flange Standards

ANSI Fittings

ANSI B16.5 Flanges

This standard covers dimensions and tolerance for pipe flanges in ½" to 24" NPS from pressure class 150 to 2500 lbs across various flange types such as Slip-On, Weld Neck, Threaded or Screwed, Socket Weld, Lap Joint and Long Welding Neck flanges.

Overview

ASME B16.36 Flanges

This standard covers dimensions and tolerance for pipe flanges, similar to ANSI B16.5 and having orifice pressure differential connections. Standard is limited to

  • Weld Neck flanges in Class 300, 400, 600, 900, 1500, 2500
  • Slip-On and threaded flanges in Class 300 lbs.

Overview

ASME B16.47 Series A Flanges

This standard covers dimensions and tolerance for large diameter pipe flanges from 26 to 60 inch NPS in Class 150, 300, 400, 600 and 900 lbs pressure ratings.

Overview

ASME B16.47 Series B Flanges

This standard covers dimensions and tolerance for large diameter pipe flanges from 26 to 60 inch NPS in Class 75, 150, 300, 400, 600 and 900 lbs pressure ratings.

Overview

API Flanges

API 6A Flanges

This standard covers high-pressure flanges, commonly used in surface drilling and production. API 6A covers flanges in type 6B & 6BX from 2000 psi to 20000-psi pressure ratings.

Overview

API 17D Flanges

This standard covers SS and SV flanges used for subsea applications.

Overview

API 605 Flanges

This standard is equivalent to ANSI-ASME B16.47 Series B, covering large diameter flanges from 26 to 60 NPS in class 75, 150, 300, 400, 600 and 900 lbs pressure ratings.

Overview

AWWA Flanges

AWWA C207 Flanges

This standard covers ring type, hub type and blind flanges from 4 to 50 inch NPS, commonly used for water pipe line connections. Covers flanges across type B, D, E, & F tables.

Overview

SAE Flanges

SAE J518 Flanges

This standard covers complete dimensions specification for flanged heads and split flange clamp halves applicable to 4 bolt split flange type tube, pipe and hose connections. SAE J518 specification is further classified into code 61 & code 62 flanges.

Overview

BS Flanges

BS 10 Flanges

This standard covers dimensions for plain, boss, integrally cast or forged and weld neck type flanges, from ½ to 24 inch NPS, covered under Table D, E, F & H of BS 10 specification.

Overview

BS 1560 Flanges

This standard covers circular flanges for pipes, valves and fittings from size ½ to 24 inch NPS. Flange dimensions covered by BS 1560 specification are similar to ANSI B16.5 class 150 and 300 lbs.

Overview

BS 4504 Flanges

This standard covers circular plate type, weld neck, blind and threaded flanges for pipes, valves and fittings from sizes DN10 up to DN2000 in PN2.5, PN6, PN10, PN16, PN25, PN40 pressure ratings.

Overview

JIS Flanges

JIS B2220 Flanges

This standard covers dimensions for slip-on and blind flanges from size DN 400 up to DN 1000 in 5K, 10K, 16K & 20K pressure ratings.

Overview

BIS Flanges

IS 6392 Flanges

This standard covers dimensions for cast, forged and plate flanges or flat steel pipe flanges for use in industry for oil, water, steam, air, gas and chemical services. IS 6392 covers integral, welding neck, plate, screwed boss, slip-on boss, loose flanges and blind/blank flanges.

Overview

SANS Flanges

SANS / SABS 1123 Flanges

This is a South African National standard for flanges used with pipes, valves and fittings. SABS 1123 covers dimensions and tolerance for welding neck, slip on, threaded / screwed, slip-on boss and blind flanges in 600kPa, 1000kPa, 1600kPa, 2500kPa and 4000kPa pressure ratings.

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EN Flanges

EN 1092-1 Flanges

This standard covers dimensions, tolerances and other requirements for circular steel flanges for pipes, valves and fittings in PN designation PN 2.5 to PN 400 and nominal sizes from DN10 up to DN4000.

Overview

DIN Flanges

DIN Flanges

DIN has developed many specification standards for flanges covering large variety of steel flanges for used with pipes, fittings and valves. Click on the link to know more standards for different types of flanges including welding neck, slip-on, threaded, long weld neck, loose plate flange, slip-on hub flange and blind flanges.

Overview

GOST Flanges

GOST 12820 Flanges

This Russian standard covers dimensions and tolerance for Steel Plane / Slip-on flanges used with pipes, fittings and valves from 0.1 to 2.5 MPa pressure ratings.

Overview

GOST 12821 Flanges

This Russian standard covers dimensions and tolerance for Steel Weld Neck flanges used with pipes, fittings and valves from 0.1 to 2.5 MPa pressure ratings.

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