Long Weld Neck Weld Flanges are well manufactured with dimensions covered with ASME B 16.5 which covers Pipe Flanges and Flanged Fittings for Size NPS ½” to 24” for above NPS 26” to 60”. It should also be as per ASME B16.47. With many types of customised sizes available, we have successfully completed leading the market with various products and flanges material types available and today we stand as No. 1 in the market.
This effective product services started effectively in the year 1992 and still continues to supply many industries and countries like UAE, Saudi Arabia, Kuwait, Qatar, Egypt, Turkey, Oman, Africa, Malaysia & many countries in USA & Europe. We also provide various stainless steel alloy fittings and flange those which incudes are Pipe Elbow, Pipe Tee, Pipe Cross, Investment Casting-IC Fittings and Pipe End Cap with many more on the list. Flanges that are also available are Blind Flanges, Threaded Flanges, Flat Flanges, Expander Flanges, Groove and Tongue flanges, loose flanges, forged flanges and many more types. All these are specified with different grades and standards like ASME A182, ASME B16.9, ASME B16.11, MSS SP-43, MSS SP-95 and BS3799. Dimensions are as follows ASME 16.11, MSS SP-79, 83, 95, 97 and BS 3799. The sizes also differ from each other 1/8″~4″ (DN6~DN100), B16.5, BS 4504, EN-1092 and likewise many more.
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We are an ISO 9001, 14001, OHSAS 18001 with PED 97/23/EC approved Supplier & Exporter of Industrial raw materials. Other stainless steel alloy products like Pipe Elbow, Pipe Tee, Pipe Cross, Lap Joints, Butt-Weld Pipes and many more are also available with other types of pipe flanges and pipe fittings. Being certified & Award winner for Supplier & Exporter of industrial stainless Steel piping materials we have the best pipes and tubes solutions with offer pricing. All our excellent products are tested on different parameter to maintain high quality product value in the market. Our business connections are beneficial to more than 600 reputed organisations in more than 30+ countries from last 25 years with 95% of customer retention. Today we are leading the market with exclusive pipe fittings and flanges manufacturing in Mumbai, India.
Long Weld Neck Flanges Specification
| Product Type | Long Neck Weld Flanges, ASME 16.5 Long Weld Neck Flanges / LWN |
|---|---|
| Size | ½” (15 NB) to 36″ (900NB) |
| Pressure Class | 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS |
| Stainless Steel Long Neck Weld Flanges | ASTM A 182, A 240 F 304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H,904L |
| Carbon Steel Long Neck Weld Flanges | ASTM / ASME A/SA 105 ASTM / ASME A 350 , ASTM A 181 LF 2 / A516 Gr.70 A36, A694 F42, F46, F52, F60, F65, F70 |
| Alloy Steel Long Neck Weld Flanges | ASTM / ASME A/SA 182 & A 387 F1, F5, F9, F11, F12, F22, F91 |
| Duplex Steel Long Neck Weld Flanges | ASTM / ASME A/SA 182 F 44, F 45, F51, F 53, F 55, F 60, F 61 |
| Specialize | As per drawing |
| Standard | ANSI : ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48DIN : DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642,DIN2655, DIN2656, DIN2627, DIN2628, DIN2629, DIN 2631, DIN2632, DIN2633, DIN2634, DIN2635, DIN2636, DIN2637, DIN2638, DIN2673 |
| Flanges Forms | Weld Neck Flanges – WNRF, Socket Weld Flanges – SWRF, Slip On Raise Face – SORF, Blind RaiseFace- BLRF, Spectacle Blind, Ring Joint, Large Dia Flanges, Orifice Flanges, Girth Flange, Lap Joint Flanges, Screwed (Threaded) Flanges, Long Weld Neck Flanges, Reducing. |
LWN
|
Size
|
Rating
|
Length
|
|
1/2″ – 24″
|
150# – 1500#
|
9″ – 18″
|
|
1/2 – 12″
|
2500#
|
9″ – 18″
|
|
A105, A105N, SA-350 LF2, 304/304L, 316/316L
|
||
|
***Additional sizes, grades, and lengths available from manufactures stock as well as made to order per drawing items***
|
||
HB
|
Size
|
Rating
|
Length
|
|
1″ – 24″
|
150# – 1500#
|
9″ – 24″
|
|
1 – 12″
|
2500#
|
9″ – 18″
|
|
A105, A105N, SA-350 LF2, 304/304L, 316/316L
|
||
|
***Additional sizes, grades, and lengths available from manufactures stock as well as made to order per drawing items***
|
||
Speciality Nozzels
|
Size
|
Rating
|
Length
|
|
1″ – 24″
|
150# – 1500#
|
9″ – 24″
|
|
1 – 12″
|
2500#
|
9″ – 18″
|
|
A105, A105N, SA-350 LF2, 304/304L, 316/316L
|
||
|
***Additional sizes, grades, and lengths available from manufactures stock as well as made to order per drawing items***
|
||
Studding Outlets (Flat Or Curved Bottom)
|
Size
|
Rating
|
Length
|
|
1/2″ – 24″
|
150# – 1500#
|
1 1/4″ – 6 3/4″
|
|
1/2″ – 12″
|
2500#
|
2″ – 5 1/2″
|
|
A105, A105N, SA-350 LF2, 304/304L, 316/316L
|
||
|
***Additional sizes, grades, and lengths available from manufactures stock as well as made to order per drawing items***
|
||
ASME/ ANSI B16.5 Long Weld Necking Pipe Flanges Manufacturing Materials :
| 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) |
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 Long Weld Neck Flanges Dimensions
| Pipe Size(NPS) | Outside Diameterof FlangeA |
Diameter of Raised FaceB | Thickness of FlangeC | Diameter of BoreD | Diameter of Hub at BaseJ | Lengthof HubK | Nunberof Bolt Holes | Diamete of Bolt Holes | Bolt Circle DiameterP | Approx. Weight |
|---|---|---|---|---|---|---|---|---|---|---|
| 1/2 | 3 3/4 | 1 3/8 | 9/16 | 0.50 | 1 1/2 | 9 | 4 | 5/8 | 2 5/8 | 5 |
| 3/4 | 4 5/8 | 1 11/16 | 5/8 | 0.75 | 1 7/8 | 9 | 4 | 3/4 | 3 1/4 | 9 |
| 1 | 4 7/8 | 2 | 11/16 | 1.00 | 2 1/8 | 9 | 4 | 3/4 | 3 1/2 | 10 |
| 1 1/4 | 5 1/4 | 2 1/2 | 3/4 | 1.25 | 2 1/2 | 9 | 4 | 3/4 | 3 7/8 | 14 |
| 1 1/2 | 6 1/8 | 2 7/8 | 13/16 | 1.50 | 2 3/4 | 9 | 4 | 7/8 | 4 1/2 | 17 |
| 2 | 6 1/2 | 3 5/8 | 7/8 | 2.00 | 3 1/4 | 9 | 8 | 3/4 | 5 | 19 |
| 2 1/2 | 7 1/2 | 4 1/8 | 1 | 2.50 | 3 15/16 | 9 | 8 | 7/8 | 5 7/8 | 28 |
| 3 | 8 1/4 | 5 | 1 1/8 | 3.00 | 4 5/8 | 9 | 8 | 7/8 | 6 5/8 | 36 |
| 3 1/2 | 9 | 5 1/2 | 1 3/16 | 3.50 | 5 1/4 | 9 | 8 | 7/8 | 7 1/4 | 45 |
| 4 | 10 | 6 3/16 | 1 1/4 | 4.00 | 5 3/4 | 12 | 8 | 7/8 | 7 7/8 | 54 |
| 5 | 11 | 7 5/16 | 1 3/8 | 5.00 | 7 | 12 | 8 | 7/8 | 9 1/4 | 86 |
| 6 | 12 1/2 | 8 1/2 | 1 7/16 | 6.00 | 8 1/8 | 12 | 12 | 7/8 | 10 5/8 | 108 |
| 8 | 15 | 10 5/8 | 1 5/8 | 8.00 | 10 1/4 | 12 | 12 | 1 | 13 | 150 |
| 10 | 17 1/2 | 12 3/4 | 1 7/8 | 10.00 | 12 5/8 | 12 | 16 | 1 1/8 | 15 1/4 | 218 |
| 12 | 20 1/2 | 15 | 2 | 12.00 | 14 3/4 | 12 | 16 | 1 1/4 | 17 3/4 | 289 |
| 14 | 23 | 16 1/4 | 2 1/8 | 14.00 | 16 3/4 | 12 | 20 | 1 1/4 | 20 1/4 | 342 |
| 16 | 25 1/2 | 18 1/2 | 2 1/4 | 16.00 | 19 | 12 | 20 | 1 3/8 | 22 1/2 | 426 |
| 18 | 28 | 21 | 2 3/8 | 18.00 | 21 | 12 | 24 | 1 3/8 | 24 3/4 | 493 |
| 20 | 30 1/2 | 23 | 2 1/2 | 20.00 | 23 1/8 | 12 | 24 | 1 3/8 | 27 | 575 |
| 22 | - | - | - | - | - | - | - | - | - | - |
| 24 | 36 | 27 1/4 | 2 3/4 | 24.00 | 27 5/8 | 12 | 24 | 1 5/8 | 32 | 823 |