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Contents-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. We can offer a comprehensive range of Lap Joint Flange for the right technical solution. MD Exports LLP manufacture & export wide selections of ANSI B16.5 Lap Joint Flange & ASME B16.47 Lap Joint Flange at most attractive price as per customer requirements, we can also manufacture Lap Joint Flange in ASTM/ASME/ANSI grades as per our customer budget, we enjoy the reputation supplying Lap Joint Flange at cheapest in steel industries around the globe.
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.
Lap Joint Flange Description
Other Name: LJ Flange, LAP JOINT FLANGE, FF, RF, ANSI B16.5, CLASS 150, CLASS 300, ASTM A105
Standard: ANSI, ASME, ASA B16.5, LJ, JIS, DIN, BS4504, SABS1123, EN1092-1, UNI, AS2129, GOST-12820
Size: 1/2” - 24” (DN15-DN2000)
Material: ASTM A105, Carbon Steel, High Nickel Alloys
Supply Ability: 3000Ton/Month
Process: Forged, Forging
Packing: Plywood Pallets
Pressure: ANSI class 150, 300, 600, 1500, 2500, DIN PN6,PN10,PN16,PN25,PN40,PN64,PN100,PN160
Surface Treatment: Anti-rust Oil, Transparent/Yellow/Black Anti-rust Paint,Zinc,Hot dipped Galvanized
ASA B16.5, ANSI B16.5, ASME B16.5, 150# 300# 600# 900# 1500# LAP JOINT FLANGE RF, LAP JOINT FLANGE FF, RF, ASME B16.5, Monthly output 3000Ton.
Norms & Types
1) ASA B16.5 150# LAP JOINT FLANGE, LJ FLANGE, FF, RF, 1/2" - 24", ANSI B16.5, ASTM A105.
2) ASA B16.5, 300# LAP JOINT FLANGE, LJ FLANGE, FF, RF, 1/2" - 24", ANSI B16.5, ASTM A105.
3) ASA B16.5, 600# LAP JOINT FLANGE, LJ FLANGE, FF, RF, 1/2" - 24", ANSI B16.5, ASTM A105.
4) ASA B16.5, 900# LAP JOINT FLANGE, LJ FLANGE, FF, RF, 1/2" - 24", ANSI B16.5, ASTM A105.
5) ASA B16.5, 1500# LAP JOINT FLANGE, LJ FLANGE, FF, RF, 1/2" - 24", ANSI B16.5, ASTM A105.
Material
1) Carbon Steel ASTM A105 & Stainless Steel ASTM A182 SS304, SS316, SS316L
Surface Antirust:
Surface antirust 1: Antirust light oil
Surface antirust 2: Black paint coating
Surface antirust 3: Yellow paint coating
Surface antirust 4: Galnavized (Hot Dipped Galvanized or Cold Galvanized or Electro Galvanized)
Surface Finish:
Surface finish 1: Stock finish
Surface finish 2: Sprial serrated
Surface finish 3: Two or three grooves (Water Lines)
Surface finish 4: Smooth finish
Lap Joint Flange Dimensions & Tolerances
| Class | 150 | 300 | 400 | 600 | 900 | 1500 | 2500 |
| Diameter - A | 30 | 38 | 38 | 38 | 38 | 38 | 43 |
| Diameter - D | 90 | 95 | 95 | 95 | 120 | 120 | 135 |
| Thickness - B | 11.2 | 14.3 | 14.3 | 14.3 | 22.3 | 22.3 | 30.2 |
| Diameter - G | 35.1 | 35.1 | 35.1 | 35.1 | 35.1 | 35.1 | 35.1 |
| Diameter - K | 60.3 | 66.7 | 66.7 | 66.7 | 82.6 | 82.6 | 88.9 |
| Height - H | 16 | 22 | 22 | 22 | 32 | 32 | 40 |
| Bolt Holes | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| Diameter - L | 15.9 | 15.9 | 15.9 | 15.9 | 22.2 | 22.2 | 22.2 |
| Stud Bolts Diameter x Length | |||||||
| Diameter (in) | 1/2 | 1/2 | 1/2 | 1/2 | 3/4 | 3/4 | 3/4 |
| Length (mm) | 55 | 65 | 75 | 75 | 110 | 110 | 120 |
| NPS | 1/2 | 3/4 | 1 | 1¼ | 1½ | 2 | 2½ | 3 | 3½ | 4 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 24 |
--------------------------------------------------------------------------------- > NPS <------------------------------------------------------------------------------
Dimensional Tolerances of Lap Joint Flanges ASME B16.5
| Outside Diameter ≤ 24 = 1.6 mm | > 24 = ± 3.2 mm |
Inside Diameter ≤ 10 = ± 0.8 mm | ≥ 12 = + 1.6 mm / - 0 mm |
| Diameter of Contact Face 1.6 mm Raised Face = ± 0.8 mm 6.35 mm Raised Face, Tongue & Groove / Male-Female = ± 0.4 mm |
Outside Diameter of Hub ≤ 12 = + 2.4 mm / - 1.6 mm | ≥ 14 = ± 3.2 mm |
| Diameter of Counterbore Same as for Inside Diameter |
Drilling Bolt Circle = 1.6 mm | Bolt Hole Spacing = ± 0.8 mm Eccentricity of Bolt Circle with Respect to Facing ≤ 2½ = 0.8 mm max. | ≥ 3 = 1.6 mm max. |
| Thickness ≤ 18 = + 3.2 mm / - 0 | ≥ 20 = + 4.8 mm / - 0 |
Length thru Hub ≤ 18 = + 3.2 mm / - 0.8 mm | ≥ 20 = + 4.8 mm / - 1.6 mm |
Notes
1. Dimensions are in millimeters unless otherwise indicated.
2. The length of the stud bolt does not include the height of the chamfers (points).
Product range
Lap Joint Flanges Range
½” (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 Lap Joint Flanges
Grade : 304, 304L, 304H, 309, 310, 310S, 316, 316Ti, 316 L, 317, 317L, 321, 347, 347 H, 409, 410, 410S, 420, 430L
Duplex Steel Lap Joint Flanges
Grade : 2205 (UNS No. S31803), 2507 (UNS No. S32750)
Nickel Alloy Lap Joint Flanges
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 Lap Joint Flanges
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)
Lap Joint Flanges Standard
- ANSI : ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48
- DIN : DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642, DIN2655, DIN2656, DIN2627, DIN2628, DIN2629, DIN 2631, DIN2632, DIN2633, DIN2634, DIN2635, DIN2636, DIN2637, DIN2638, DIN2673
- B.S : BS4504, BS4504, BS1560, BS10
- OTHER : PLATE, PLATE BLANK
Value Added Services for Lap Joint Flanges
- HOT DIPPED GALVANIZING
- HEAT TREATMENT
- CNC MACHINING
- THREADING
Lap Joint Flange Packaging & Marking
Lap Joint Flange are individually wrapped by hand to ensure that the high quality of the material is maintained and no damage in the last stages of production. We recommend Plywood cases or pallet packaging to ensure safe packaging and prompt delivery of the ordered consignment.
Lap Joint Flange come with imprints relevant to the job information (eg, heat number, size, material and part number). This information is also printed along all delivered Lap Joint Flange.
Pressure class of Lap Joint Flange
- 150 Lbs Lap Joint Flange
- 300 Lbs Lap Joint Flange
- 400 Lbs Lap Joint Flange
- 600 Lbs Lap Joint Flange
- 900 Lbs Lap Joint Flange
- 1500 Lbs Lap Joint Flange
- 2500 Lbs Lap Joint Flange
Lap Joint Flange Price
ASME B16.5 Welding Neck Flange
FOB Price: US $1-2000 / Ton
ANSI Class150 4" Welding Neck Flange
FOB Price: US $700-1400 / Ton
Forged F304 B16.5 150LBS Slip On Flange
FOB Price: US $0.1-266 / Piece
Flange f304 a105 rf/ff slip on flange pn16 150ib
FOB Price: US $600-8000 / Ton
bs4504 pn16 socket welding flange high quality
FOB Price: US $1100.00-1450.00 / Ton
150lb socket welding stainless flanges F316
FOB Price: US $0.12-150 / Piece
lap joint flange a105
FOB Price: US $1000-2500 / Ton
ansi b16.5 class 150 lap joint flange
FOB Price: US $1-500 / Piece
ANSI Class150 Threaded Flange
FOB Price: US $700-1400 / Ton
threaded flange
FOB Price: US $1-5000 / Piece
EN1092 Forged Steel Blind Flange
FOB Price: US $1000-1200 / Ton
stainless steel pn10 blind flange
FOB Price: US $1-2000 / Piece
spectacle blind B16.48/API590
FOB Price: US $1-5000 / Piece
square flange
FOB Price: US $1000-2500 / Ton
Lap Joint Flange Inventory
ASME / ANSI B16.5 / ASME B16.47 Flange- Download PDF
Available materials for Flange
Flange Inventory
| Stainless Steel | Nickel Alloys | Carbon Steel & Alloy Steel |
|---|---|---|
Stainless Steel Flange |
High Nickel Alloy Flange |
|
Products
- Welding Neck Flange +
- Slip On Flange
- Socket Weld Flange
- Lap Joint Flange
- Threaded Flange
- Blind Flange +
- Spectacle Blinds
- Spades and Ring Spacers
- Square Flange
- Special Flanges +
- Flange Faces +
- Flange Pressure Class +
Available Materials
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