Long Weld Neck Flanges Manufacturers in India

Long Weld Neck Flanges manufacturer, SS Long Weld Neck Flanges, Alloy Steel Long Weld Neck Flanges, Carbon Steel Long Weld Neck Flanges, Inconel Long Weld Neck Flanges, Monel Long Weld Neck Flanges, hastelloy Long Weld Neck Flanges Manufacturers in India. ANSI/ASME B16.5,B16.47,B16.47,B16.36, B16.48 Long Weld Neck Flanges

Long Weld Neck Flanges manufacturer, Long Welding Neck Flange suppliers,Seamless/Seam Welded Long Weld Neck Flanges, Fabricated Long Weld Neck Flanges, Long Weld Neck Flanges Suppliers in Indonesia, UAE, Saudi Arabia, Oman, Qatar, Australia.

Ramesh Steel Corporation is specialized in manufacturing and supplying of Long Weld Neck Flanges , Flanges, Pipe Fitting, Forged Fittings, Butt weld fittings, Flanges in Stainless steel, alloy Steel & carbon Steel since 1991, we manufacture wide range of Long Weld Neck Flanges such as SS Long Welding Neck Flange, Alloy Steel Long Welding Neck Flange, Carbon Steel Long Welding Neck Flange, Inconel Long Welding Neck Flange, Monel Long Welding Neck Flange, hastelloy Long Welding Neck Flange etc. as per International standard like ASME/ASTM/API, we are supplying & exporting Long Weld Neck Flanges in seamless & welded both forms to more than 60 countries for over 2 decades, we have our dealers & distributors in Nigeria, Australia, Malaysia, Egypt, South Africa, Tanzania, Kenya, Mozambique, Angola, Gabon Germany, Turkey, France, United Kingdom, Italy, Netherlands, Iran , Iraq , Saudi Arabia, United Arab Emirates , Iisrael, Jordan, Oman, Kuwait, Qatar, Bahrain, Bangladesh, China, Indonesia, South Korea, Pakistan, Philippines, Singapore, Sri Lanka, Thailand, Vietnam, Brazil, Colombia, Argentina & United States of America, Ramesh Steel corporation is the only company in INDIA which is approved Manufacturer & supplier of Long Weld Neck Flanges in 300 top companies worldwide. Few of them are ORPIC, NIORDC, Saudi Aramco, SABIC, PIDMCO, GASCO, KNPC, Indian Oil, BPCL, HPCL, NTPC, BARC & Indian Navy, Ramesh Steel Corporation is ISO 9001:2008, ISO 14001, OHSAS 18001 Certified Company since 2006 & PED approved Manufacturer since 2008, Ramesh Steel is India's 6th largest Manufacturer, supplier & exporter of Long Weld Neck Flanges .

Ramesh steel corporation is manufacturing & exporting pipe flange from 1/2” thru 200”, 150 lbs to 3000 lbs including carbon Steel flanges , Long Weld Neck Flanges and alloy Steel flanges according to ANSI , API , MSS , AWWA , DIN , JIS , BS and GB for the world market. We are experienced & specialized in manufacturing special ring flanges and other forgings as per drawing provided by our clients.

We supply ASME Code and Non Code Industrial flanges for the Petrochemical, Chemical & Waterworks industries. check our price before buying ANSI, API, AWWA pipe flanges in carbon Steel flanges , Stainless Steel Flange , alloy Steel flanges and chrome steel flanges. Weld Neck Flanges , Long Weld Neck Flanges , Blind flanges , Threaded flanges , socket weld flanges , Lap Joint flanges , Orifice Flanges in sizes 1/2" to 198" .

Infrastructure :

we at Ramesh Steel have 200 sets of equipment, including 20 sets of modern forging equipment, 140 high precision machine tools, floor-type lathes, drills, vertical lathes and other machining equipment, 2 electrical heating furnaces, 5 heat treatment furnaces, 2 PMI detection equipment, tensile machines, impact testers, hardness testers, metallographic analyzers, digital UT flaw detectors, etc. Forging process available in house: ring rolling forging, open die forging


Long Weld Neck Flanges

Long Weld Neck Flanges


ASME/ ANSI B16.5 Long Weld Neck Flanges latest price & specification

Price: US $0.2-10 / Piece

Size: 1/2" (15 NB) to 48" (1200NB)

Standards: ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, BS 4504, EN1092, UNI 2277/2278, DIN, B16.5-2009 B16.47-2006 asme asme 
API605-1988, mss sp 44-2006, csa Z245.12-05-2005, EN1092-1-2007 EN1759-1-2004, DIN2630 DIN2631 DIN2632 DIN2633 DIN2634 DIN2635 DIN2636 DIN2637 DIN2638, BS1560-3.1 BS4504-3.1-1989 -1989, Afnor nf E29-200-1-2007, ISO7005-1-1992, AS2129-2000, jis B2220-2004, Custom Drawings

Pressure Ratings: Class 150, Class 300, Class 400, Class 600, Class 900, Class1500, Class 2500 | PN6, PN10, PN16, PN25, PN40, PN64 etc.

Carbon Steel ASME B16.5 Long Weld Neck Flanges: ASTM A105/A105N, A350 LF1, LF2 CL1/CL2, LF3 CL1/CL2, A694 F42, F46, F48, F50, F52, F56, F60, F65, F70, A516.60, 65, 70 (Spectacle Blind Flange, Spacer Ring/Spade Flange), Steel RST37.2, C22.8

Stainless Steel ASME B16.5 Long Weld Neck Flanges: ASTM A182 F 202, F 304/ 304L/ 304H, F 316/316L, F 316H, F 316TI, F 310, F 321, F 904L

Alloy Steel ASME B16.5 Long Weld Neck Flanges: ASTM A182 F1, F5, F9, F11, F22, F91

Special Alloy ASME B16.5 Long Weld Neck Flanges:
Nickel Alloys ASME B16.5 Long Weld Neck Flanges: Nickel 200 (UNS No. N02200), Nickel 201 (UNS No. N02201), Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500), Inconel 800 (UNS No. N08800), Inconel 825 (UNS No. N08825), Inconel 600 (UNS No. N06600), Inconel 625 (UNS No. N06625), Inconel 601 (UNS No. N06601), Hastelloy C 276 (UNS No. N10276), Alloy 20 (UNS No. N08020), Titanium (Grade I & II).
Duplex, Super Duplex ASME B16.5 Long Weld Neck Flanges: ASTM / ASME A/SA 182 F 44, F 45, F51, F 53, F 55, F 60, F 61, 2205 (UNS No. S31803), 2507 (UNS No.S32750)

Copper Alloy ASME B16.5 Long Weld Neck Flanges: UNS No. C 10100, 10200, 10300, 10800, 12000, 12200, 70600, 71500, UNS No. C 70600 (Cu -Ni- 90/10), C71500 (Cu -Ni- 70/30)

Flange Face Type: Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)

Flange Form: SORF, WNRF, BLRF, SWRF, LAP Joint, Threaded, Reducing, Spectacle, etc

Coating/Surface Treatment: Anti-rust Paint, Oil Black Paint, Yellow Transparent, Zinc Plated, Cold and Hot Dip Galvanized

Value Added Services: CNC Machining, Customised Flanges


ASME/ ANSI B16.5 Long Weld Neck 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) 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

ASME/ANSI B16.5 Long Neck Weld Flanges

Item steel flange, steel pipe flanges, Long weld neck flange
Standard AISI B16.5, AISI B16.47, AISI B16.36, MSS SP44, API6A, BS 4504, EN1092, UNI 2277/2278, DIN 4504
Material Carbon Steel Long weld neck flange: ASTM A105/A105N, A350 LF1, LF2 CL1/CL2, LF3 CL1/CL2, A694 F42, F46, F48, F50, F52, F56, F60, F65, F70, A516.60, 65, 70 (Spectacle Blind Flange, Spacer Ring/Spade Flange), Steel RST37.2, C22.8Stainless Steel Long weld neck flange: ASTM A182 F202, F304/304L/304H, F316/316L, F316H, F316TI, F310, F321, F904LAlloy Steel Long weld neck flange: ASTM A182 F1, F5, F9, F11, F22, F91Special Alloy Long weld neck flange: Duplex, Super Duplex, Nickel Alloys
Type Plate Flange, Flat Flange, Slip on Flange, Welding Neck Flange, Long Welding Neck Flange, Blind Flange, Socket Welding Flange, Thread Flange, Screwed Flange, Lap Joint Flange
Connection type Raised Face, Flat Face, Ring Type Joint, Lap-Joint Face, Large Male-Female, Small Male-Female, Large Tongue, Groove, Small Tongue, Groove.
Size 1/2″-100″, SCH5S-SCH160, XS, XXS, STD
Application Widely used in petroleum/ chemical industry/power/ship building/paper making/metallurgy/ construction /water supply and sewage work

Long Weld Neck (WN) Flanges Dimensions:

  • Dimensions and tolerances in accordance with ANSI/ASME B16.5 for sizes 1/2″ to 24″.
  • Carbon steel forgings in accordance with ASTM A105.
  • Bolt circle diameters are 1/8 inch larger than bolt diameter.
  • Connection complies with ASME BPVC Section II, Section VIII Division 1 and ASTM A105.

Specification/ Dimension of ANSI, ASME, ASA, B16.5 WELDING NECK FLANGE RF

Pipe Size(NPS) OutsideDiameterofFlangeA 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


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ANSI/ASME steel flanges


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BS steel flanges


JIS steel flanges


valve components


Plain washer, gasket


Flange Standard



Types of Long Weld Neck Flange


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Type Of Long Welding Neck Flanges Available At Best Price

stainless steel Long Weld Neck Flange

stainless steel Long Weld Neck Flange

Alloy steel Long Weld Neck Flange

Alloy steel Long Weld Neck Flange

Carbon steel Long Weld Neck Flange

Carbon steel Long Weld Neck Flange

Duplex steel Long Weld Neck Flange

Duplex steel Long Weld Neck Flange

Super Duplex Long Weld Neck Flange

Super Duplex Long Weld Neck Flange

Alloy 20 Long Weld Neck Flange

Alloy 20 Long Weld Neck Flange

Nickel Long Weld Neck Flange

Nickel Long Weld Neck Flange

Inconel Long Weld Neck Flange

Inconel Long Weld Neck Flange

 Hastelloy Long Weld Neck Flange

Hastelloy Long Weld Neck Flange

Monel Long Weld Neck Flange

Monel Long Weld Neck Flange



Long Weld Neck Flanges Flange Price :

LWN Flanges – 300 lb Class – Long Weld Neck Flanges , Heavy Barrel , Equal Barrel
US $1-10000 / Piece ( FOB Price)

ASME B16.5 Long Weld Neck Flanges Flange Forging
US $60.0-60.0 / Sets ( FOB Price)




Steel Flanges Manufacturing Process


We have supplied Long Weld Neck Flange to below countries


Malaysia Angola Netherlands
Nigeria Gabon Iran
Egypt Germany Iraq
South Africa Turkey United Arab Emirates
Tanzania France israel
Kenya United Kingdom Jordan
Algeria Italy Oman
Uganda Philippines Kuwait
Ghana Singapore Qatar
Mozambique Sri Lanka China
Morocco Thailand Indonesia
Saudi Arabia Vietnam Japan
Canada United States Pakistan
Mexico  


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List of Countries where Ramesh Steel Corporation supply Long Weld Neck Flanges