LONG WELD NECK FLANGE

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PRODUCTS

ORIFICE FLANGE

  • Carbon Steel API 605, ASTM A105/A694/A350 /LF2, /A351/A352/A285
  • Stainless Steel: A182/A182M, F304 F304L F316 F316L 316Ti
  • Alloy: A182/A105, GR F1, F5, F9, F11, F12, F22, F91
  • Standard: API, ANSI, MSS,  AWWA, JIS, DIN, BS4504, SABS1123, EN1092-1
  • Size Range: 1/2''  -  78'' , DN10-DN2000

LONG WELD NECK FLANGE

  • ANCHOR FLANGE

    Anchor Flange is a flange use to restrain pipe movement(axial movement) in a piping system. Very similar looks as Weld Neck flange, but it has two hubs on both both sides to allow weld with the pipes.

  • BLIND FLANGE

    Blind flange is usually installed at the end of any piping system either on a header or branch connection or on a valve and functions as a means for positive isolation of the piping system.

  • WELD NECK FLANGE

    A Weld Neck flange (WN Flange) consists of a circular fitting with a protruding rim or neck (hub) around the circumference. Widely used in all applications, it is easily recognized by its long tapered neck on the flange. The tapered neck can provide high strength reinforcement to support flange and pipe.

  • LONG WELD NECK FLANGE

    Long Weld Neck Flange(LWN flange) is also call integral flange, is identical to Weld Neck Flange, but it has a long protruding hub or tapered neck and a bevel end, to butt welding with the matching pipe.

  • LAP JOINT FLANGE

    Lap Joint Flange (LJF), is a flange that consists of two parts, a stub end and the backing flange. On a Lap Joint, the flange slides over the pipe and the stub end is the connection where the gasket sits. The end where the gasket sits is the same outside diameter as the face of a raised face flange.

  • ORIFACE FLANGE

    Orifice Flanges are used in conjunction with orifice meters to measure the flow rate of liquids or gases in the respective pipeline, using tapped or socket weld style meter connections located on the outside diameter of the flanges, using tapped or socket weld style meter connections located on the outside diameter of the flanges.

  • RING FLANGE

    Ring type joint flange, abbreviated as RTJF, is a type of flange that uses a metal ring that sits in a hexagonal groove as a gasket to seal the flange pair. The flanges seal when the bolts are tightened and the gasket is compressed into the groove making a metal to metal seal

  • SPADE RING SPACER FLANGE

    Spades Ring Spacers Flanges are forged products used to blind pipelines temporarily or permanently. ASME B16.48 covers the dimensions and specifications of these spacers ring flanges

  • PLATE FLANGE

    Plate Flange is a flat, circular disk that is welded onto the end of a pipe and allows it to be bolted to another pipe. Typically used in fuel and water pipelines, the two plate flanges will be bolted together with a gasket in between them. The plate flange will have bolt holes all around the perimeter and will be used to create junctions, tees and joints.

  • SOCKET WELD FLANGE

    Socket Weld Flange (SWF) is similar to Slip on Flange, but it has a recessed area (like a shoulder) in the flange bore, this shoulder serves as a guide to set the depth of the pipe that inserted to the flange. It Socket welding flange initially designed for high pressure small diameters piping system.

  • SLIP ON FLANGE

    Slip-on flanges are installed on pipes by slipping on the flange bore over the pipe outside diameter and securing it to the pipe by fillet welds. There is no full penetration weld between the pipe and slip-on flanges, hence the joint cannot be subject to radiography.

  • SPECTACLE BLIND FLANGE

    Spectacle blind or Figure 8, is a safety device used to isolate a section of line or piece of equipment when the line or equipment needs to be inspected or removed from service. Figure 8 are generally two metal discs that are attached to each other by a small section of steel.,cut to fit between two pipe flanges and usually sandwiched between two gaskets.The shape is similar to a pair of glasses or “spectacles” – hence the name spectacle blind.

  • THREADED FLANGE

    Threaded (Screwed) Flange has a threaded bore inside the flange bore which fits on the pipe with matching male thread on the pipe.nThe taper pipe threads conforming to ASME B1.20.1 in its bore can be used in piping systems where it is not possible to carry out welding of the pipe, such as highly explosive environment where welding can create a potential hazard.

GET A QUOTE

We supply varieties of Weld NeckFlange in custom sizes and materials

Long Weld Neck Flange/Forged Flange

Type

Long Weld Neck Flange
Material

Carbon Steel API 605, ASTM A694/A350/A351/A352/A285/ SS400, SF440 RST37.2, S235JRG2, P250GH, C22.8,

Stainless Steel: A182/A182M, F304 F304L F316 F316L 316Ti, SS 31254, SS400, SF440, RST37.2

ALLOY A182/A105,
Standard ANSI, JIS, DIN, BS4504, SABS1123, EN1092-1, UNI,AS2129, GOST-12820, DIN2673/2632/UNI,AS2129, GOST-12820,
Pressure Class ANSI class 150 - 2500lb. DIN PN6, PN10, PN16, PN25, PN40, PN64, PN100, PN160
Manufacturing STD ASME B16.5, ASME B16.47A, ASME B16.47B, MSS SP 44, DIN 2632, DIN2633, DIN2634, DIN2635, DIN2636, JISB2220, BS4504, GB,
Size 1/2''  -  78''

Nominal Pipe Size

Diameter of Bore

Pre Beveled Hub Diameter

For 40%F Temperature Change

For 90%F Temperature Change

Dim O

Dim Q

Dim L

Dim X

Dim O

Dim Q

Dim L

Dim X

6

According to customer requirements.

6.75

9.5

0.63

2.88

7

11.25

1.13

3.63

7

8

8.75

12.13

0.75

3

9

14.63

1.38

3.88

9

10

11

14.88

0.88

3.13

11.13

17.13

1.5

4

11.13

 

 

 

 

 

 

 

 

 

 

12

13

17.75

1

3.5

13.25

19.25

1.63

4.25

13.25

14

14.25

19.63

1.13

3.75

14.5

20.5

1.75

4.5

14.5

16

16.25

22.38

1.31

4.19

16.3

22.5

1.81

5

16.63

 

 

 

 

 

 

 

 

 

 

18

18.25

24.63

1.38

4.63

18.63

24.63

1.94

5.5

78.63

20

20.31

26.63

1.5

4.88

20.63

26.75

2

6

20.75

22

22.31

28.63

1.63

5.13

22.63

28.75

2.13

6.25

22.75

 

 

 

 

 

 

 

 

 

 

24

24.38

30.63

1.69

5.44

24.63

31

2.25

6.75

24.88

26

26.38

32.75

1.75

5.88

16.75

32.88

2.31

7.13

26.88

28

28.38

34.88

1.81

6.19

28.88

35

2.38

7.5

29

 

 

 

 

 

 

 

 

 

 

30

30.44

36.88

1.94

6.56

30.88

37

2.5

8

31

34

34.5

41

2.06

7.19

35

41

2.75

8.75

35

36

36.5

43

2.13

8

37

43

2.88

9.63

37

Long Weld Neck Flange

Material

Carbon Steel

ASTM A105, LF2, CL1 / CL2

16MN,20#

Stainless Steel

ASTM A182, F304 / 304L, F316 / 316L,A182F317/317L,A182F310,F321,F347,316Ti

Alloy Steel

ASTM A182 A182 F12,F11,F22,F5,F9,F91,F51,F53,F55,F60,F44,F304H,F316H,F317H,F321H,F347H,INCONEL 600,625,825,etc.

Standard

ANSI B16.5

Class 150 Flanges-Class 2500 Flanges

DIN

6Bar 10Bar 16Bar 25Bar 40Bar 63Bar

JIS

5K Flanges-30K Flanges

EN1092-1

6Bar 10Bar 16Bar 25Bar 40Bar 63Bar 100Bar

Type

1. Plate Flange     2. Flat Flange   3. Slip on Flange    4. Welding Neck Flange   5. Long Welding Neck Flange     6. Blind Flange    7. Socket Welding Flange    8. Thread Flange      9. Screwed Flange      10. Lap Joint Flange. etc.

Connection Type

Raised Face, Flat Face, Ring Type Joint, Lap-Joint Face, Large Male-Female, Small Male-Female, Large Tongue, Groove, Small-Tongue, Groove, etc.

Size

1/2'-100”, SCH5S-SCH160S,XS,XXS,STD

 

ASME/ ANSI B16.5 Slip On (SO) Flange

Dimensions

Base Material

Pressure Rating

ASME B16.5

ASTM A182 (Forgings) ASTM A240 (Plate)

150#. 300#. 400#. 600#. 900#. 1500#. 2500#.

API 605

ASTM A182 (Forgings) ASTM A240 (Plate)

150#. 300#. 400#. 600#. 900#. 1500#. 2500#.

ASME B16.47series A & B

ASTM A182 (Forgings) ASTM A240 (Plate)

150#. 300#. 400#. 600#. 900#. 1500#. 2500#.

EN1092-1

ASTM A182 (Forgings)

PN2.5. PN6. PN10. PN16. PN25. PN40. PN63. PN100. PN160. PN250. PN320. PN400.

BS4504

BS970 (Bar)ASTM A240 (Plate) ASTM A182 (Forgings)

PN2.5. PN6. PN10. PN16. PN25. PN40. PN63. PN100. PN160.

BS10

BS970 (Bar)ASTM A240 (Plate) ASTM A182 (Forgings)

Table D. Table E. Table F. Table H. Table J. Table K. Table R. Table S.Table T.

Typical Stainless Steel 18/8 Grade Designations:

ASTM

BS

DIN

EURONORM

304

304S15

X5 Cr Ni 18 10

1.4301

304L

304S11

X2 Cr Ni 18 9

1.4307

316

316S31

X5 Cr Ni Mo 17 12 2

1.4401

316L

316S11

X2 Cr Ni Mo 17 13 2

1.4404

321

321S31

X6 Cr Ni 18 10

1.4541

316Ti

320S31

X6 Cr Ni Mo Ti 17 12 2

1.4571

SMO

254SMO

X1 Cr Ni Mo Cu N 20 18 7

1.4547

ANSI ASME B16.5 Slip On Flanges Dimensions
ANSI ASME B16.5 Class 150
ANSI ASME B16.5 Class 300
ANSI ASME B16.5 Class 400
ANSI ASME B16.5 Class 600
ANSI ASME B16.5 Class 900
ANSI ASME B16.5 Class 1500
ANSI ASME B16.5 Class 2500

Material

Stainless steel, Carbon steel, Alloy steel

Standard

ASME/ANSI B16.5 ASME B16.47(A) ASME B16.47(B) ASME B16.48

Type

SO WN SW TH LJ/SE LJ/RJ BL

Size

1/2'-24' 26'-96'

Pressure

Class150-2500

Surface

Anti-rust Oil, Transparent/Yellow/Black Anti-rust Paint, Zinc Galvanized, Flame plating

Facing

FF RF MFM TG RJ
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