LWN Long Weld Neck Flanges

1.What are LONG WELD NECK FLANGES?

Long Weld Neck Flanges have a hub that extends from the flange's flat surface, which helps in accommodating the pipe more easily. Alloy Steel Long Weld Neck Flange fall under the group of speciality flanges, providing reinforcement in services at higher temperatures in the oil industry. A Carbon Steel Long Welding Neck Flanges is preferable in the petroleum and chemical industry as they operate under fluctuating temperature ranges.

OEM/ODM order accepted, standard or no-standard steel Long weld neck flanges in various specifications and standard materials can be manufactured according to customers’ requirements.

Long Welding Neck Flanges

LONG WELD NECK FLANGES

ASME-B16.5-Long Welding Neck Flanges

2.Standard Specification For Long Weld Neck Flanges

Dimensions : ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings
ASME Size : 1/2" to 48"
DIN: DN15 TO DIN 1200.
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.Long Weld Neck Flange Pressure Grade

Class : 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS,
DIN Standard PN6,10, 16, 25, 40 ,64,100,250,320,400.
JIS B2220:5K、10K、16K、20K、30K、40K,63K.

5.Material & Grades of Long Weld Neck Flanges :

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 Long weld neck 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

Long Welding Neck Flanges Face types

FLANGE SEALING FACE TYPES

LWN LONG WELD NECK FLANGE FACE TYPE

7.ANSI B16.5 Long Weld Neck Flanges Application

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

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