Monel Lap Joint Flanges Manufacturer and Exporter
Monel  Blind Flanges Manufacturer and Exporter
Hastelloy  Flanges Manufacturer and Exporter
Duplex   Flanges Manufacturer and Exporter
Incoloy Flanges Manufacturer and Exporter

Our Products

DIN Flanges

Lap Joint flanges are used on piping fitted with lapped pipe or with lap joint stub ends. The lap joint flange with the stub end assembly are normally used in systems requiring frequent dismantling for inspection and cleaning and where the ability to swivel flanges and to align bolt holes materially eases the erection of large diameter or unusually stiff piping. These flanges are also used in applications where there is a need to facilitate bolt alignment.

These types of flanges are similar to slip-on flanges. The only difference is that it has a curved radius at the bore and face to accommodate a lap joint stub end. They may be used at all pressures and are available in a full size range. These lap joint flanges slip over the pipe, and are not welded. They are otherwise fastened to it. Here the bolting pressure is transferred to the gasket by the pressure of the flange against the back of the pipe lap.

Lap Joint Flanges Key Features:

Recommended in applications that require frequent dismantling of the flanges and pipe.
Used with a matching stub-end insert.
Can rotate to allow for an easy alignment of bolt holes.
Not recommended in extreme or high-pressure temperature applications.

Advantages of Lap Joint Flanges:

Lap Joint flanges have certain special advantages over other flanges. These are as follows:
Lap Joint flanges have the freedom to swivel around the pipe. This facilitates the lining up of opposing flange bolt holes.
Lack of contact with the fluid inside the pipe leads to the greater durability of these flanges.
In piping systems which corrode or erode quickly, the lap joint flanges may be salvaged for re-use.
The pressure-holding capacity of lap joint flanges is little. But it is better than that of slip-on flanges.
The Lap Joint works as a backing ring on the stub.
The main advantage of lap joint flange is that the bolt holes can be aligned with the matching flange after the welds have been completed.
They allow rotational alignment capability.

Product range
Lap Joint Flanges Range

" (15 NB) to 48" (1200NB) in 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS ASA 150, ASA 300, PN 6,10,16,25, 40,64,100,160 ETC. Available with NACE MR 01-75

Stainless steel Flanges ( product range)
WN – Welding Neck EN-TYPE 11
BL – Blind EN-TYPE 05
SO – Slip On EN-TYPE 01/12
LJ – Lap Joint EN-TYPE 02/04
SW – Socket Weld EN-TYPE 14
THR – Threaded EN-TYPE 13
LWN – Long Welding Neck / Integral EN-TYPE 21
Welding Collars EN-TYPE 32/34
ORIFICE Flanges, Swivel Flanges, Spades, Spacer Rings
Spectable Blinds, API 6A, JIS B2220, VSM, NFE, BS10/BS4504, GOST

GRADES:
Austenitic:
F304/304L 1.4301/1.4307 UNS S30403/S30400
F304H 1.4948 UNS S30409
F321/F321H 1.4541/1.4878 UNS S32100/S32109
F316/F316L 1.4401/1.4404 UNS S31603/S31600
F316L (MO+) 1.4435 UNS S31635
F316TI 1.4571 UNS S31635
F904L 1.4539 UNS N08904
F44 (254SMO®) 1.4547 UNS S31254
F310/F310S 1.4841/1.4845 UNS S31000/S31008
F347 (H) 1.4550 UNS S34700/S34709
F317L 1.4438 UNS S31703
F316H 1.4919 UNS S31609

Duplex & Super Duplex:
F51/F60 1.4462 UNS S31803
F53 1.4410 UNS S32750
F55 1.4501 UNS S32750

Nickel Alloys:
Alloy 800/800H 1.4876 UNS N08800/N08810
Monel 400 2.4360 UNS N04400
Alloy 600 2.4816 UNS N06600
Alloy 625 2.4856 UNS N06625
Alloy 825 2.4858 UNS N08825
Alloy C276 2.4819 UNS N10276
Alloy 59 2.4605 UNS N06059
Alloy C4 2.4610 UNS N06455
Alloy 22 2.4602 UNS N06022
Other Alloys available on request

Sizes according to ASME/ASTM B16.5 – B16.36 – B16.48
Class 150(lb) up to 24″
Class 300(lb) up to 20″
Class 600(lb) up to 20″
Class 900(lb) up to 16″
Class 1500(lb) up to 10″
Class 2500(lb) up to 8″

Sizes according to DIN – EN1092-1 – EN1759-1 – NFE – BS10/BS4504 & ISO7005-1
PN2.5/PN06/PN10 up to DN800
PN16/PN25/PN40 up to DN600
PN63/PN100 up to DN500
PN160/PN250 up to DN300
PN320/PN400 up to DN200
API 6A Flanges
2000 PSI up to 20000 PSI
JIS B2220
5K up to 63K

SPECIFICATIONS & STANDARDS:
ASTM/ASME SA/A182 – ASME SA/A240 – ASME SB/B564
ASTM/ASME B16.5/B16.48/B16.36
EN 10222-1/EN10222- 5
EN 1092-1/EN 1759-1
DIN17440
BS 10/BS 4504 (British Standard)
JIS B2220 – NFE – GOST – VSM – API 6A
ISO 7005-1 – NORSOK L005

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  • GREAT STEEL & METALS

  • Room No 15, 1st Floor,
  • New Hira Building, 1st Parsiwada,
  • Nanubhai Desai Road,
  • Mumbai-400004.
  • Tel : +91-22-23868818/23854314
  • Fax : +91-22-23878403, +91-22- 23850329
  • E-mail ID: mehta@greatmetal.com
  • Website : www.greatmetal.com

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