Weld Flanges

Specifications As Per The International Standard Astm, Asme, Api, Aisi, Bs, Ansi, Din, Jis, Mssp, Nace and Long Weld Neck Flanges, Blind Flange Plate Flanges, Socket Weld Flanges, Slip On Flange, Spectacle Flange, Weld Neck Flange.

form:
slip on - sorf
weld neck - wnrf
socket weld - swrf
blind - blrf
lapped joint
screwed
long weld neck
reducing
spectacle
ring joint
drowing

standard :
astm
bs
din
is

other :
plate
plate blank

materials
nickel alloy blind flange
standard :
•astm / asme sb 564 / 160 / 472.
•UNS 10276-HASTELLOY C 276 Long Neck Weld Flange
•UNS 2200 -NICKEL 200 Long Neck Weld Flange
•UNS 2201 -NICKEL 201 Long Neck Weld Flange
•UNS 4400-MONEL 400 Long Neck Weld Flange
•UNS 8020-ALLOY 20 Long Neck Weld Flange
•UNS 8825 -INCONEL 825 Long Neck Weld Flange
•UNS 6600-INCONEL 600 Long Neck Weld Flange
•UNS 6601 -INCONEL 601 Long Neck Weld Flange
•UNS 6625 -INCONEL 625 Long Neck Weld Flange

Copper Alloy Long Neck Weld Flange
•ASTM / ASME SB 61 / 62 / 151 / 152.
•C 70600 (CU -NI- 90/10) – Cupro Nickel Long Neck Weld Flange
•C 71500 (CU -NI- 70/30) – Copper Nickel Long Neck Weld Flange
•UNS NO. C 92200, UNS NO. C 83600, UNS NO. UNS NO C 10100,
•C 10200, C 10300, C 10800, C 12000, C 12200

Duplex Steel Long Neck Weld Flange
ASTM / ASME A/SA 182 UNS F 44, F 45, F51, F 53, F 55, F 60, F 61.

Stainless Steel Long Neck Weld Flange – SS Long Neck Weld Flange
•ASTM A182
•Grade : F 304, 304L, 304H, 309S, 309H, 310S, 310H, 316, 316TI, 316H, 316L, 316LN,317, 317L, 321, 321H, 347, 347H, 904L.

Alloy Steel Long Neck Weld Flange – AS Long Neck Weld Flange
ASTM SA 182 F1/F5/F9/F11/F22/F91

Carbon Steel Long Neck Weld Flange – CS Long Neck Weld Flange
ASTMA 105 Gr. F42/46/52/56/60/65/70

Low Temperature Carbon Steel Long Neck Weld Flange – LTCS Long Neck Weld Flange
A350 LF2/A350 LF3

Manufacturer Test Certificate as per EN 10204 / 3.1B

Welding Neck Flanges

These welding neck flanges are mainly used on heat coupling of pipes when there is possibility of expansion of the section while bending stress on the coupling.

General Design	ASME/ANSI B16.5, ASME/ANSI B16.47, API-605, and MSS SP44
Size	1/4" to 48"
Rating	Class 150# to 5000#
Schedule	Sch STD, Sch XS, Sch XXS, Sch 40 to Sch 160
Material	ASTM A105, ASTM A182 - F304/304L/316/316L

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Weld Neck Ring Joint Flanges

Weld neck ring joint flanges are designed for use in changing diameters in a piping system. A weld neck ring joint flange comprises a flange with one specified diameter having a bore of a different and smaller, diameter. Except for the bore and hub dimensions, the reducing flange will have dimensions of the larger pipe size. These flanges are used at the outlet side of the expansion joint to increase the size of the flange.

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Weld Neck Flanges

Weld Neck Flanges are a very common type of pipe flanges used in various industrial applications. They have a long tapered hub and are often used for high pressure applications.

Materials used:

Steel
Stainless Steels
Cast Iron
Brass
Galvanized steel
Carbon Steel
Aluminum
Copper
Polypropylene
PVC etc.

Key Features:

This is the most common type of high pressure pipe flange.
They are distinguished from other types of pipe flanges by their long tapered hub and gentle transition of thickness in the region of the butt weld joining them to the pipe.
The long tapered hub provides an important reinforcement of the weld neck flange proper in terms of strength and resistance to dishing.

Uses of weld neck flanges:

The weld neck flange is very resistant to dishing and has a very sturdy connection because it has the pipe along with the tapered hub.
The flanges are ideal for extreme fluctuations of temperature.
They are ideal in environments where there may be a lot of bending and handling of the flanges.
Preferred in an environment with extreme temperature conditions.
This type of flange is preferred for every severe service condition—resulting from high pressure or from sub-zero or elevated temperature.
They are used in situations where loading conditions are substantially constant or fluctuate between wide limits.
This is probably the best welding flange available because of its high, heavy neck.
Highly recommended wherever a sound welded joint connection is needed.

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Socket Weld Union

We offer socket weld union that is used to join piping assemblies in varied industries including heavy engineering pipe lines, water piping systems, cement plants, petro chemicals, power plants and many more. The socket unions are sturdily constructed using quality raw materials and are checked on various parameters including finishing, tensile strength and dimensional accuracy. We offer customized packaging solutions as required by the client.

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Socket Weld and Screwed Fittings

ASTM A105:
Forged carbon steel pipe fittings, flanges, forgings, rings, shafts, squares.

ASTM A181:
Crank shaft, rectangular bar & tube sheets.

ASTM A182:
Gr.F1/ F2/ F5/ F9/ F11/ F12/ F22/ F91/ F304/ F304H/ F304L/ F310/ F316/F316H/ F316L/ F316Ti / F321/ F347.
Wrought alloy steel & stainless steel pipe fittings and flanges and part for high-temperature services.

ASTM A-350
GR.LF1/ LF2/ LF3/ LF5/ LF6/ LF9.
Wrought forging carbon & low-alloy steel fitting and flanges.

ASTM A-420
GR. WPL1/ WPL3/ WPL6/ WPL8/ WPL9.
Wrought carbon steel & alloy steel fittings for low temperature services.

ANSI B 16.11
Forged carbon steel socketweld & threaded fittings (2000# to 9000#) size ranging from 15mm to 150mm.

The above socket weld fittings and screwed fittings can also be manufactured and supplied as per NACE STANDARD MR0175-97.

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