LJ Lap Joint Flange

1.What are LAP JOINT Flanges?

Lap Joint Flanges are used with a stub end, which is welded to the pipe. Alloy Steel Lapped Joint Flanges are designed in a way that they swing over the pipe without the need to be welded. As they do not come in contact with the inner fluid, they do not corrode and can be re-used. Our ANSI B16.5 Stainless Steel Flanges are inexpensive and widely useful. In addition, they can be easily assembled and dismantled for quick inspection.
Whether you're looking for single Lap Joint Flange to connect with a stub end fittings and slide over the pipe or Lap Joint Flange with Stub End, DLFT has the Ring Lap Joint Flange in the materials you need, as well as their fittings – type A, B and C stub ends. We offer a wide range of Lap Joint Pipe Flanges in various materials, including stainless steel, carbon steel, alloy steel for various of applications, as well as multiple dimensions.

Lap Joint Flange (Back Up, Loose Ring Flange) is free to rotate when a stub end is welded to the end of the steel tube, which has the function of not allowing the steel of the lap joint flange to come into contact with the fluid that carries the pipe. Our Steel ring joint flanges are known for their excellent performance, corrosion resistance and durability. Lap joint flange is typically used for low pressure application.

OEM/ODM order accepted, standard or no-standard steel Lap Joint flanges in various specifications and standard materials can be manufactured according to customers' requirements.

ANSI B16.5 Lap Joint Flanges meet the requirements of various industries such as automotive, heavy engineering, railways, and pipeline engineering.
Top Quality Lap Joint Flanges At Competitive Price From DLFT

LJ LAP JOINT FLANGES

LAP JOINT FLANGES WELDING TYPE

Galvanized Lap-Joint-Flanges

2.Standard Specification For Lap Joint Flanges

Dimensions : ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings
ANSI:Size : 1/2"  to 48"
DIN:DN15-DN1200
EN 1092-1
DIN : DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642, DIN2655, DIN2656, DIN2627, DIN2628, DIN2629, DIN 2631, DIN2632, DIN2633, DIN2634, DIN2635, DIN2636,DIN2637, DIN2638, DIN2673
BS : BS4504 , BS4504, BS1560, BS10
JIS B2220
KS B 6216 

3.Surface Treatment: Anti-rust Oil, Transparent/Black Anti-rust Paint/Hot dipped Galvanized.

4.Lap Joint Flange Pressure Grade

ANSI Class : 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS,
DIN Standard PN6,10, 16, 25, 40 Etc.
JIS B2220:5K、10K、16K、20K、30K、40K

5.Lap Joint Flange Materials

Carbon Steels:A516 Gr.70 ANTI-HIC, A694 F52 / F60 / F65 / F70, A105, SA-266M, 20#, 16Mn, 16MnHIC, 20#HIC, and equivalents.

Alloy Steels:SA182-F11, SA182-F22, 15CrMo, 20MnMoNb, 25Cr2MoVA, 14Cr1Mo, 12Cr2Mo1, 08Cr2AlMo, 12Cr5Mo, 38CrMoAl, 20MnNiMo, SA-508 Gr.3, and equivalents.

Low-Temperature Steels:SA350 LF1 / LF2 / LF3, 09MnNiD, 16MnD, 20MnMoD, 08Ni3D, 10NiMoVD, and equivalents.

Stainless Steels:F304 / 304L / 304H (1.4306), F316 / 316L / 316H (1.4404), F321 (1.4541), 316Ti (1.4571), F347 / F347H (1.4550), F317 (1.4449), F310 (1.4845), F904L (S39042 / 1.4539), X2CrNiMo25-22-2, SA-182M F310MoLN, A182 F6NM, A182 F6a, and equivalents.

Duplex & Super Duplex Stainless Steels:S31803 (2205), F51 (S22253), F60 (S22053 / 2205), F53 (S25073 / 2207), and equivalents.

Specialty Alloys & Nickel Alloys:SB462-N08020, Incoloy 800, UNS N08020, B564 UNS N10276, UNS N08367, NS1403, and equivalents.

6.Sealing Surface Types For Lap Joint Pipe Flanges

RF (Raised Face);                    EN 1092-1 Type B
FF (Flat Face);                         EN 1092-1 Type A
RTJ (Ring-Type Joint)             EN 1092-1  Type E

SEALING SURFACE TYPES FOR LAP JOINT FLANGE

FLANGE SEALING FACE TYPES

RTJ Ring Joint Flange

7.ANSI B16.5 Lap Joint Flanges Application

ASME B16.5 Lap Joint Flanges are known to deliver exceptional performance and are generally developed for meeting the demands. We offer a broad range of Lapped Joint Flanges. These Lap Joint Flange is use in various industries.

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