Long weld neck flange

Long weld neck flange

The most favorable and recommended flange type is a long weld neck flange. This is because they have weld bevel with the neck extension at the end. They are also designed with an aim to deliver natural connection form.

On the other hand, it also resolves most of your problem as they are available in large sizes and high classes of pressure.

Verified Supplier

Verified Stockists (Contact directly for instant quote)

available 4 cars

Stainless steel long weld neck flange suppliers in UAE

Long weld neck flange specification


Long Weld Neck Flange Specification

ASME Standard Size Range Pressure Class
  • ASME B16.5 long weld neck flange : NPS ½” – 24”
  • ½” to 48″
  • 15 NB – 1200 NB

Buy material only from verified long weld neck flange suppliers & manufacturers

  • PN6
  • PN10
  • PN16
  • PN25
  • PN40
  • PN64
  • 150 LBs
  • 300 LBs
  • 400 LBs
  • 600 LBs
  • 900 LBs
  • 1500 LBs
  • 2500 LBs
Manufacturing Technique Thickness LWN & LWNRF Meaning
  • Forged long weld neck flange (Strongest choice)
  • Plate
  • Casting
  • CNC machined long weld neck flange from bar stock

Above is the approx import time of long weld neck flange suppliers for Egypt, Saudi Arabia, USA, UK, Qatar, South Africa & UAE

  • Schedule 10 / 10S to SCH 160
  • LWN : Long weld neck flange
  • LWNRF : Raised face long weld neck flange
Inspection Methods Packaging and Marking MTC & Quality Test
  • Diameter of straight hub welding flanges bolt circle & bolt hole
  • Straightness and alignment of long weld neck flange bolt hole
  • Outer & Inner Diameter of flange long welding neck body
  • Hub Diameter Of
  • Thickness of weld end
  • Sizes
  • Material specification
  • Pressure Rating Designation
  • Face type
  • Heat code
  • Production code of long weld neck flange manufacturers
  • Bore (if applicable)
  • Dimensional standard (ASME B16.5)
  • Manufacturer’s name, brand logo
  • MTC EN 10204 type 3.1
  • Impact test
  • Hardness test
  • Shell pressure test
  • Visual inspection for stainless steel 317L long weld neck flange surfaces, welding & holes
  • ISO 15156
  • Tensile test
  • NACE MR0175
  • PMI
Face Types Surface Finish Flange Bolts Holes
  • Raised face long weld neck flange – (RF)
  • Long weld neck RTJ flange – (Ring type joint)
  • Lap ioint – (LJ)
  • Tongue & groove – (T&G)
  • Male & female – (M&F)
  • Flat face – (FF)
  • Spiral serrated
  • Serrated finish
  • Stock finish
  • Smooth Finish
  • 4 to 24

 

Choose among the verified suppliers of carbon steel long weld neck flange in Dubai, compare price lists and quality

Cast, plate & long forged weld neck flanges material

Forged Plate Cast
Duplex (DSS)/ Super Duplex (SDSS) Long Weld Neck Flange
ASTM A182 F51 ASTM A240 UNS S31803 ASTM A351 CD3MN
ASTM A182 F53 ASTM A240 UNS S32750 A890 GR.5A CE3MN*
ASTM A182 F55 ASTM A240 UNS S32760 A890 GR.6A CD3MWCuN
Al 6XN ASTM A240 UNS N08367 ASTM A351 CN3MN
ASTM A182 F44 ASTM A240 UNS S31254 ASTM A351 CK3MCuN
ASTM A182 F60 ASTM A240 UNS S32205
Titanium Long Weld Neck Flange
ASTM B381 Grade F2 ASTM B265 UNS R50400 ASTM B367 GR.C2
ASTM B381 Grade F3 ASTM B265 UNS R50550 ASTM B367 GR.C3
Stainless Steel Long Weld Neck Flange
ASTM A182 F304 long weld neck flange/ SUS 304 ASTM A240 304 ASTM A351 CF8
ASTM A182 304L/ SUS 304L ASTM A240 304L ASTM A351 CF3
ASTM A182 310 ASTM A240 310 ASTM A351 CK20
ASTM A182 F316 long weld neck flange ASTM A240 316 ASTM A351 CF8M
ASTM A182 316L/ SUS 316L ASTM A240 316L ASTM A351 CF3M
ASTM A182 316LN ASTM A240 316LN ASTM A351 CF3MN
ASTM A182 317 ASTM A240 317 ASTM A351 CG8M
ASTM A182 317 ASTM A240 317L ASTM A351 CG3M
ASTM A182 F347 ASTM A240 347 ASTM A351 CF8C
ASTM A182 F321 ASTM A240 321
ASTM A182 F904L ASTM A240 904L ASTM A351 CN2MCuN
ASTM A182 F6A ASTM A217 CA15
ASTM B462 UNS N08020 ASTM B 463 N08020 ASTM A351 CN7M
Copper Long Weld Neck Flange
ASTM B283 UNS C37700 ASTM B152 UNS C10100 ASTM B22/B22M
ASTM B124 UNS C63000
Copper Nickel Long Weld Neck Flange
Copper nickel 90/10 : ASTM B151 UNS C70600 ASTM B122 CU-Ni 90/10 ASTM B466 CuNi10Fe 1Mn
Copper nickel 70/30 : ASTM B151 UNS C71500 ASTM B122 CU-Ni 70/30 ASTM B466 CuNi30Mn1FE
EEMUA 234 : UNS 7060X
EEMUA 145
EN 1652/ 12420/124491
Ductile Iron Long Weld Neck Flange
ASTM B381 GR.F2 ASTM B367 GR.C2
Pure Nickel Long Weld Neck Flange
Inconel 800 – ASTM B564 ASTM B409 UNS N08800 A484 CU 5MCuC*
Inconel 825 – ASTM B564 ASTM B409 UNS N08825 A484 CU 5MCuC*
Inconel 600 – ASTM B564 ASTM B168 UNS N06600 A494 CY40*
Inconel 601 – ASTM B564 ASTM B168 UNS N06601
Inconel 625 Long Weld Neck flange – ASTM B564 ASTM B168 UNS N06625 A494 CW6MC*
Monel 400 Long Weld Neck flange – ASTM B564 ASTM B127 UNS N04400 A494 M35-1
Monel K500 – ASTM B564 ASTM B127 UNS N05500 A494 M30H
Alloy C-22 – ASTM B366 ASTM B575 UNS N06022 ASTM A494 CX2MW
Hastelloy C 276 Long Weld Neck flange – ASTM B366 ASTM B575 UNS N10276 ASTM A494 CW12MW
Alloy Steel Long Weld Neck Flange
ASTM A182 Grade F5A & F5 ASTM A387 Grade 5 ASTM A217 Gr C5
ASTM A182 F1
ASTM A182 F9 ASTM A387 Grade 9 ASTM A217 Gr C12
ASME/ ASTM A182 F11 ASTM A387 Grade 11 ASTM A217 Gr WC6
ASTM A182 F22 ASTM A387 Gr 22 ASME/ ASTM A217 Grade WC9
ASTM A182 F91 ASTM A387 Gr 91 ASTM A217 Grade C12A
Carbon Steel Long Weld Neck Flange
ASTM A105 long weld neck flange ASTM A515 Grade 60
ASTM A105N CS ASTM A216 Grade WCB and WCC
ASTM A350 Gr LF2 (CL 1& CL2) ASTM A352 Grade LCB and LCC
ASTM A350 Gr LF3 ASTM A352 LC3
ASTM A350 Gr LF6
LTCS ASTM A352 Grade LCC
ASTM A694 F42 ASTM A572 Gr 42
ASTM A694 F46
ASTM A694 F50 ASTM A572 Gr 50
ASTM A694 F52
ASTM A694 F60 ASTM A572 Grade 60
ASTM A694 F65 ASTM A572 Grade 65
ASTM A694 F70 ASTM A572 Grade 70
S235JRG2, P250GH, 1.4541, 1.4571

Long Weld Neck Flange Material

Most common types of ASME B16.5 long weld neck flange

  • CNC machined long weld neck flange
  • Cast long weld neck flange
  • Long weld neck plate flange (made from plate)
  • Forged long weld neck flange

 

Carbon steel long weld neck flange International standards

USA Europe Germany Japan
  • API 605
  • ANSI B16.5
  • ANSI B16.48
  • ASA
  • CL 125 (Light weight)
  • MSS SP44
  • ASME B16.5 long weld neck flange
  • ANSI B16.47 (API 605)
  • ANSI B16.36
  • AWWA
  • AWWA C207
  • PN 10 to PN400
  • BS EN 1759
  • ISO 7005
  • DIN
  • JIS
  • JIS B2220
Australia & UK Europe Russia Italy
  • BS 10
  • EN 1092-1
  • BS EN 1092-2
  • BS EN 1092-3
  • Ghost
  • UNI 2276
  • UNI 6091
South Korean and China Malaysia France Canada
  • GB/T 9112 / 9119 (China)
  • KS B1503 (South Korean)
  • MS 816
  • MS 253
  • MS 253
  • MS 816
  • NF E 29-200
  • NF E 29-203
  • CSA B16.5
  • ANSI B16.47 Series A & B

 

Long neck flange sealing face types

Long neck flange sealing face types

 

Type Long weld neck flange Sealing Way
FF Flat face
LWNRF Raised face long weld neck flange
LJ Lap Joint
RTJ Ring Type Joint
M&F Male & female
T&G Tongue and Groove

 

Check dimensions

 

Long weld neck flange size

Number of Bolts
Size in Inch Size in MM 150# 300# 400# 600# 900# 1500# 2500#
1/2 15 4 4 4 4 4 4 4
3/4 20 4 4 4 4 4 4 4
1 25 4 4 4 4 4 4 4
1 1/4 32 4 4 4 4 4 4 4
1 1/2 40 4 4 4 4 4 4 4
2 50 4 8 8 8 8 8 8
2 1/2 65 4 8 8 8 8 8 8
3 80 4 8 8 8 8 8 8
3 1/2 90 8 8 8 8  –  –
4 100 8 8 8 8 8 8 8
5 125 8 8 8 8 8 8 8
6 150 8 12 12 12 12 12 8
8 200 8 12 12 12 12 12 12
10 250 12 16 16 16 16 12 12
12 300 12 16 16 20 20 16 12
14 350 12 20 20 20 20 16
16 400 16 20 20 20 20 16
18 450 16 24 24 20 20 16
20 500 20 24 24 24 20 16
24 600 20 24 24 20 16

 

Raised face long weld neck flange height

Class Height
#150 1/6″
#300 1/6″
#400 1/4″
#600 1/4″
#900 1/4″
#1500 1/4″
#2500 1/4″

 

Stainless steel long weld neck flange pressure class

ASME B16.5 long weld neck flange
  • 150 PSI
  • 250 PSI
  • 300 PSI
  • 350 PSI
  • 400 PSI
  • 600 PSI
  • 900 PSI
  • 1500 PSI
  • 2500 PSI
KS1503/ JIS B2220 long weld neck flange
  • 5K
  • 10K
  • 16K
  • 20K
  • 30K
SANS/SABS 1123 long weld neck flange
  • Class 600/3
  • 1000/3
  • 1600/3
  • 2500/3
  • 4000/3

 

Copper nickel long weld neck flange specification

Sizes Of Cupro Nickel Long Weld Neck Flange Cu-Ni LWNRF Flange Drilling & Outer Diameter Copper Nickel LWN Flange Large Size
  • 16MM To 914MM
  • ½” To 36″
  • 16MM – 610MM
  • ½ inch – 24 inch
  • 711 To 914MM
  • 24″ – 36″

Accoding to MSS SP-44

Pressure Class Of UNS C70600 Long Weld Neck Pipe Flanges Composite CUNI Long Neck Flanges Are Manufactured From Copper Nickel Long WN Flanges Recommended Hardware
  • 16 bar
  • 20 bar
  • ASTM A105N
  • Welded UNS C70620 copper nickel disk
  • As per ANSI/ASME B16.5
Coating Of C71500 RFLWN Flanges Types Of C70600 Long Weld Neck Flange Copper Nickel Long Welding Neck Flange Applications
  • Hot dipped galvanising
  • Composite long weld neck flanges
  • Solid long weld neck flanges
  • Offshore
  • Marine applications
  • Petrochemical
  • Seawater
  • Petroleum plants
Grade UNS Number Standard
  • 90/10 Copper nickel
  • 70/30 Copper nickel
  • UNS 7060X
  • UNS C70620
  • CW352H
  • EEMUA 234/3-6
  • EN 12420
  • EEMUA 234
  • MIL-T-16420K
  • EEMUA 145
  • EN 124491
  • WL 2.1972
  • DIN 86019
  • ASTM B4662
  • EN 1652
  • ASTM B467

 

Alloy steel long weld neck flange temperature range

Alloy Grade UNS Forged long weld neck flange Casting long weld neck flange DIN WNR Temperature range
Moly steel long weld neck flange C-1/2Mo K12822 ASTM A182 Gr F1 cl2 ASTM A217-WC1 15M03 1.5415
  • Up to 470ºC*
  • 875ºF
Alloy steel chrome moly long weld neck flange 1.1/4Cr-1/2Mo K11572 ASTM A182 Gr F11 cl2 ASTM A217 WC6 13CRM044 1.7335
  • Up to 593ºC
  • 1100ºF
2.1/4Cr-1Mo K21590 ASTM A182 Grade F22 cl3 ASTM A217 Gr WC9 10CRM0910 1.7380
  • Up to 593ºC
  • 1100ºF
5Cr-1/2Mo K41545 ASTM A182 Grade F5/F5a ASTM A217 Gr C5 12CRMO195 1.7362
  • High temp boiler/ refinery application
9Cr-1Mo K90941 A182 Gr F9 A217-C12 X 12 CrMo 9 1 1.7386
  • High temp erosive refinery application
9Cr-1Mo-V A182 Gr F91 A217-C12A X 10 CrMoVNb 9 1 1.4903
  • High pressure boilers
Alloy steel long weld neck flange AISI 4130 long weld neck flanges G41300 ASTM A182 ASTM A217/M  1.7218
  • 899 to 927°C
  • 1650 to 1700°F

 

LWNRF flange DIN standard

 

LWN flange UNI standard

  • UNI 2280
  • UNI 2283
  • UNI 2286

 

Long WN flange BS standard

  • BS 4504 (PN 2.5 to PN 40)
  • BS 10 (Tables D, E, F and H)

 

RFLWN flange JIS standard

  • JIS B2220
  • JIS B2311
  • JIS B2312
  • KS B1522
  • KS B1541
  • KS B1543

 

LWN flanges hub length

  • Except that the length through hub shall be 229 mm (9″) for normal pipe size (NPS) 4
  • Smaller and 305 mm (12 inch) for larger than NPS (normal pipe size) 4.

 

Long weld neck flange weight chart

NPS in Inch Thickness Weight in KG
1/2 7/16 3
3/4 1/2 5
1 9/16 8
1 1/4 5/8 10
1 1/2 11/16 12
2 3/4 16
2 1/2 7/8 21
3 15/16 24
3 1/2 15/16 31
4 15/16 47
5 15/16 57
6 1 77
8 1 1/8 103
10 1 3/16 150
12 1 1/4 215
14 1 3/8 221
16 1 7/16 254
18 1 9/16 276
20 1 11/16 324
22
24 1 7/8 439

 

Buy all types of alloy steel long weld neck RTJ flange as per ASME b16.5, check manufacturing methods, advantages, and disadvantages

There are many benefits that are offered by using super duplex long weld neck RTJ flange.

This is because many industrial standards rely on this material, because of their extreme stiffness and strong nature. This is because they use a tapered hub which is long, that subsequently increases the wall thickness.

But there is one limitation that is placed. On the basis of ASME B16.5, it offers complexity in both cost effectiveness and installation mode.

Top notch quality services must be provided for customer who choose stainless steel long welding neck flange, at cost effective alternatives. Keeping this in mind, it is recommended for customers to visit the listed suppliers at pipingmaterial.ae; where the customers are provided:

  • Assistance from these listed suppliers, if any confusion prevails.
  • Still being heavily charged or worried for the product being genuine? This B2B platform has it all taken care of, as you would get only 100% genuine, apt and trusted suppliers.
  • Need retail price for small amounts? The contact details of each suppliers are available for absolutely free of cost. So, customers can directly place their demands.
  • These suppliers also assure you products with various testing standards; to add value to the product. For them, efficient service to customers is always a top notch priority.

Many such customer-friendly alternatives are provided, making this platform one of the prominent and reputed long weld neck flange suppliers in UAE.

carbon steel long weld neck flange must be in accordance with ASME B16.5, in order to deliver product genuineness for customer. Other than this, NDT, radioactive, eddy current and ultrasonic testing results can claim for how the material shows non-degraded performance, without altering the physical dimensions of the product.

Not finding a specific size with your current importers? Check the list of very few but verified suppliers and get the perfect duplex LWNRF flange at the best price

There are many queries that prevail out for a customer who opts for super duplex long weld neck RTJ flange based on the welding processes.

Yes, one can weld this material. But make sure that while using it for pipe connections, it should be butt welded to it. Adding to this, also be sure on the fact that the same diameter, thickness and other dimensional aspects are maintained.

Other than this, if one demands for specific sizes, then it is highly recommended to approach the suppliers directly, who quotes reasonable prices. Best origin can be from countries such as India, UAE and other middle east countries, where they can quote affording prices, primarily on the basis of customer’s requirements.

Other factors such as shipping cost, freight cost, etc. might also be included depending on the amounts, availability and quantity in demand.

Get benefits of the lowest price when buying from verified ASTM A182 F304 raised face long weld neck flanges manufacturers in the middle east and India.

Countries such as India, Dubai and middle eastern countries are best for purchasing ASTM A182 F304 raised face long weld neck flanges as they offer affording pricing for customers.

For instance, if you are a buyer from Mumbai who wants to get the product from suppliers in Abu Dhabi, then the shipping cost is associated with this material, for transporting the material from Zayed port to Mumbai port trust. It also depends on the availability and the quantity in demand.

SS long welding neck flange estimated import price and shipping time variations :

Trinidad And Tobago Jamaica Bahamas
Estimated Shipping 60 days 50 days 60 days
Extra cost 5% 5% 5%
Denmark Russia Norway
Estimated Shipping 35 days 20 days 45 days
Extra cost 5% 5% 5%
Note: Don’t forget to check latest price list from the genuine long weld neck flange suppliers, manufacturers and stockist listed on pipingmaterial.ae