Flanges

A flange is a forged or cast ring of steel designed to connect sections of pipe or join pipe to a pressure Vessel, pump or any other integral flanges assembly.

Flanges are joined to each other by bolting and joined to the piping system by welding or threading.

The basic types of flanges are; Slip on, Blind, Weld Neck, Threaded, Socket Weld, Lap Joint and Orifice.

Flanges are designed to the following pressure ratings; 150lb, 300lb, 400lb, 600lb, 900lb, 1500lb and 2500lb.

The most common facings machined on flanges are:
(a) Raised face, 1/16 inch for 150lb and 300lb, ¼ inch for 400lb and heavier.
(b) Flat face, for 150lb and 300lb only, other may be flat face on request.
(c) Ring type joint, may be applied to all pressure ratings.

Stainless Steel: ASTM A 182, A 240 
Grade: F 304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H

ASTM A 105, ASTM A 181

Alloy Steel: ASTM A 182, GR F1, F11, F22, F5, F9, F91

Nickel Alloys: Monel 400 & 500, Inconel 600 & 625, Incolloy 800, 825, Hastelloy 904

Duplex Steel
Grade: 2205 (UNS No. S31803), 2207 (UNS No. S32760)

Nickel Alloy
Grade: 
Nickel 200 (UNS No. N02200), Nickel 201 (UNS No. N02201),
Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500),
Inconel 800 (UNS No. N08800), Inconel 825 (UNS No. N08825),
Inconel 600 (UNS No. N06600), Inconel 625 (UNS No. N06625),
Inconel 601 (UNS No. N06601),
Hastelloy C 276 (UNS No. N10276),
Alloy 20 (UNS No. N08020),
Titanium (Grade I & II)

Copper Alloy 
Grade:
UNS No. C 10100, 10200, 10300, 10800, 12000, 12200, 70600, 71500,
UNS No. C 70600 (Cu -Ni- 90/10), C 71500 (Cu -Ni- 70/30)

• Annealed/Solution Annealed.
• Hardened & Tempered.
• Strain Hardened.
• Centerless Ground.
• Centerless Ground & Polished.
• Cold Drawn.
• SmoothTurned & Polished.
• Forged & Rough Turned.
• Buffed (Mirror finish).
• 100% Ultrasonically tested.

LAP JOINT	SCREWED	WELDING NECK
BLIND	SLIP-ON	SOCKET WELDING
WELDING NECK	BLIND	PLATE
BLIND	PLATE	SLIP-ON