Flanges

What is a Flange ?

A flange is a method of connecting pipes, valves, pumps and other equipment to form a piping system. It also provides easy access for cleaning, inspection or modification. Flanges are usually welded or screwed. Flanged joints are made by bolting together two flanges with a gasket between them to provide a seal.

 

Types of Flange

Weld Neck Flange

Slip On Flange

Socket weld Flange

 

Threaded Flange

Lap joint flange

Blind flange

 

Standard Specification for Flanges

Size :	½” (15NB) TO 48” (1200NB)
Class :	150#, 300#, 400#, 600#, 900#, 1500#, 2500#, 3000#. Also as per the National & International Standard
Standard :	: SORF, SOFF, SOLJ, SWFF, WNRF, WNFF, WNRTJ, LWNRF, BLRF, BLFF, BLRTJ, SWRF, LAP Joint, Threaded, Reducing, Spectacle, Orifice & Studding Outlet are manufactured according to ANSI B 16.5, B 16.47 Series A (MSS SP-44), B 16.47 Series B (API 605), MSS SP-43, DIN 2527, DIN 2566, DIN 2576, DIN 2632, DIN 2633, DIN 2634, DIN 2635, DIN 2642, BS 10, IS 1538 & IS 6392, JIS Flanges etc.
Flange Dimension Standard :	ANSI B16.5 (150# to 2500#), ANSI B16.47 (Series A/B, 75# to 900#), EN 1092-1 (PN 6, 10, 16, 25, 40), DIN Standard, UNI Standard, API 6A Standard, BS 10 (Table A, D, E, F, H, J, K, R, S, T), JIS B2220 (5K, 10K, 16K, 20K, 30K), MSS SP-44 Standard, AS 2129 (Table A, D, E, F, H, J, K, R, S, T), IS 6392 Standard.
Forms :	: Slip-On Flange (SO), Blind Flange (BL), Lap Joint Flange (LF), Socketweld Flange (SW), Weld Neck Flange (WN), Long Weld Neck Flange (LWN), Ring Type Joint (RTJ), Threaded Flange, Customized Flange with Raised Face (RF), Flat Face (FF).

 

Special Flanges

 

Material of Construction in Flanges

  Stainless Steel Flanges Specifications

Grades: Grades: ASTM A182 GR F201, F202, F301, F302, F304, F304L, F309, F310, F316, F316L, F316LN, F317L, F321, F347, 405, 409, 410, 420, 430, 440C, F904L

  Carbon Steel Flange Specifications

Grades:ASTM A105, ASTM A350 Gr. LF2, LF3, ASTM A694 -F42, F46, F48, F50, F52, F56, F60, F65, F70.

  Alloy Steel Flange Specifications

Grades: ASTM A182 / ASME SA182 GR F1, F5, F9, F11, F12, F22, F91

  Duplex & Super Duplex Steel Flange Specifications

Grades: ASTM A182 GR 2205 (F51, S31803 / F60, S32205), SMO254 (F44, S32154), 2507 (F53, S32750 / F55, S32760), Ferralium 255 (F61, S32550).

  Copper Alloy Flange Specifications

Grades: ASTM / ASME SB 61 / 62 / 151 / 152 Commercial, ETP, OFE, CuNi 90/10 (C70600), CuNi 70/30 (C71500), Brass, Naval Brass, Aluminium Bronze, Admiralty Brass.

  Nickel Alloy Flange Specifications

Grades: ASTM B564 / B182 GR 200 (N02200), 201 (N02201), Alloy 20 (N08020).

  Monel Alloy Flange Specifications

Grades: ASTM B564 / ASME SB564 GR 400 (N04400), 500 (N05500).

  Inconel Flange Specifications

Grades: ASTM B564 / B408 / B425 / A182 GR 600 (N06600), 601 (N06601), 625 (N06625),718 (N07718), 800 (N08800), 800H (N08810), 800HT (N08811), 825 (N08825), F904L (N08904).

  Hastelloy Flange Specifications

Grades: ASTM B564 / B572 GR C726 (N10276), C4 (N06455), C22 (N06022), C2000 (N06200), X (N06002), B2 (N10665), B3 (N10675).

  Titanium Flange Specifications

Grades: ASTM B381 GR F2, F5 (Ti6AI4V), F7.