Stainless Steel orifice Flanges, Alloy Steel orifice Flanges, Carbon Steel orifice Flanges, Orifice Flanges Manufacturers, Orifice Flanges Manufacturers in India

Orifice Flanges Manufacturers in India, 316L Stainless Steel Orifice Flange Manufacturer in India, Stainless Steel Orifice Flanges, ASTM A182 Orifice Flange, SS 316L Orifice Flange Manufacturers in India, Manufacturer of Orifice Flanges, SS Orifice Flanges, ASTM A182 F316L Orifice Flange, Alloy Steel Orifice Flanges, Carbon Steel Orifice Flanges, Inconel Orifice Flanges, Monel Orifice Flanges, Hastelloy Orifice Flanges Manufacturers in India, ANSI/ASME B16.5, B16.47, B16.47, B16.36, B16.48 Orifice Flanges.

Industrial Orifice Flanges, Weld Neck Orifice Flange, Slip On Orifice Flange, Threaded Orifice Flange, ANSI B16.36 Orifice Flanges, B16.36-Welding Neck Orifice Flanges, Orifice Flanges Suppliers in India, Suppliers of Orifice Flanges, Orifice Flanges Manufacturers, Orifice Flanges Suppliers,Seamless/Seam Welded Orifice Flanges, Fabricated Orifice Flanges, Orifice Flanges Suppliers in Nigeria, Australia, Egypt, India , Iraq

Ramesh Steel Corporation is specialized in manufacturing and supplying of orifice flanges , Pipe Fitting, Forged Fittings, Butt weld fittings, Flanges in Stainless steel, alloy Steel & carbon Steel Since 1982, we manufacture wide range of orifice flanges such as SS Spectacle Blind Flange, Alloy Steel Spectacle Blind Flange, Carbon Steel Spectacle Blind Flange, Inconel Spectacle Blind Flange, Monel Spectacle Blind Flange, hastelloy Spectacle Blind Flange etc. as per International standard like ASME/ASTM/API, we are supplying & exporting orifice 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, 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 orifice 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 orifice flanges .

Ramesh steel corporation is manufacturing & exporting pipe flange from 1/2” thru 200”, 150 lbs to 3000 lbs including carbon Steel flanges , orifice 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 , Blind Flanges , threaded Flanges , orifice flanges 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


orifice flanges

orifice flanges


ASME B16.36 Orifice 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 B16.36 Orifice 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 B16.36 Orifice 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 B16.36 Orifice flanges: ASTM A182 F1, F5, F9, F11, F22, F91

Special Alloy ASME B16.36 Orifice flanges:
Nickel Alloys ASME B16.36 Orifice 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 B16.36 Orifice 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 B16.36 Orifice 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


Orifice Flange Manufacturers in India

Orifice Flanges Manufacturer in INDIA manufacturing orifice flanges from Class 150 to Class 2500 Orifice Flange, type of sealing face RF & RTJ, material in kinds of carbon steel, low temperature carbon steel, alloy steel, stainless steel, Inconel & Hastelloy

Orifice Flanges are used with orifice plate or flow nozzle for the purpose of measuring the flow rate of either liquids or gases in the respective pipeline, we manufacture orifice Flange according to ANSI B16.36 Standard.

  • 316L Stainless Steel Orifice Flange Manufacturer in India
  • ASTM A182 Orifice Flange, 300lb, 2 inch, ANSI b16.5, RF

SS 316L Orifice Flange

SS 316L Orifice Flange

SS 316L Orifice Flange Manufacturer in India

ASTM A182 Orifice Flange Manufacturer in India producing at low cost due to cheaper labour & offering best price on ASTM A182 F316L Orifice Flange, 2 Inch, 300LB, ANSI B16.5, without coating, Raised Face.






Orifice Flanges generally come with either Raised Faces or RTJ (Ring Type Joint) facings. They are, for all intensive purposes, the same as weld neck and slip on flanges with extra machining.

Orifice Flanges are used with orifice meters for the purpose of measuring the flow rate of either liquids or gases in the respective pipeline. Pairs of pressure "Tappings", mostly on 2 sides, directly opposite each other, are machined into the orifice flange. This makes separate orifice carriers or tappings in the pipe wall unnecessary.

The range of orifice flanges covers all standard sizes and ranges, and all common flange materials. Flanges are available in Welding Neck, Slip On, and Threaded form, and are typically supplied with two 1/2" NPT tappings in each flange.

ASME B16.36 covers Dimensions and dimensional tolerances from orifice flanges (similar to those covered in ASME B16.5) that have orifice pressure differential connections. Coverage is limited to the following flanges:

  • Welding Neck Classes 300, 400, 600, 900, 1500, 2500
  • Slip On Class 300
  • Threaded Class 300

ASME B16.36 Orifice flanges Manufacturing Materials

Dimensions Base Material Pressure Rating
ASME B16.5ASTM A182 (Forgings) ASTM A240 (Plate)150#. 300#. 400#. 600#. 900#. 1500#. 2500#.
API 605ASTM A182 (Forgings) ASTM A240 (Plate)150#. 300#. 400#. 600#. 900#. 1500#. 2500#.
ASME B16.47series A & BASTM A182 (Forgings) ASTM A240 (Plate)150#. 300#. 400#. 600#. 900#. 1500#. 2500#.
EN1092-1ASTM A182 (Forgings)PN2.5. PN6. PN10. PN16. PN25. PN40. PN63. PN100. PN160. PN250. PN320. PN400.
BS4504BS970 (Bar)ASTM A240 (Plate) ASTM A182 (Forgings)PN2.5. PN6. PN10. PN16. PN25. PN40. PN63. PN100. PN160.
BS10BS970 (Bar)ASTM A240 (Plate) ASTM A182 (Forgings) 

Typical Stainless Steel 18/8 Grade Designations:

ASTM BS DIN EURONORM
304304S15X5 Cr Ni 18 101.4301
304L304S11X2 Cr Ni 18 91.4307
316316S31X5 Cr Ni Mo 17 12 21.4401
316L316S11X2 Cr Ni Mo 17 13 21.4404
321321S31X6 Cr Ni 18 101.4541
316Ti320S31X6 Cr Ni Mo Ti 17 12 21.4571
SMO254SMOX1 Cr Ni Mo Cu N 20 18 71.4547

B16.36-Welding Neck Orifice Flanges – Class 150

Welding Neck Orifice Flanges
 Nominal sizeOCRXAYTTNo. of holesDiam. of holesDiam. of boltsDiam. of bolt circle
in.1″4.881.522.121.323.2501/04/0740.695/8″3.5
mm. 12438.150.853.833.582.66.4 17.515.988.9
in.1 1/2″6.121.52.882.751.93.3801/04/0740.813/4″4.5
mm. 155.438.173.269.948.385.96.4 20.619.1114.3
in.2″6.51.53.623.312.383.3801/04/0780.695/8″5
mm. 165.138.191.984.160.585.96.4 17.515.9127
in.2 1/2″7.51.54.123.942.883.501/04/0780.813/4″5.88
mm. 190.538.1104.6100.173.288.96.4 20.619.1149.4
in.3″8.251.554.623.53.503/08/0780.813/4″6.62
mm. 209.638.1127117.388.988.99.5 20.619.1168.1
in.4″101.56.195.754.53.6201/02/0780.813/4″7.88
mm. 25438.1157.2146.1114.391.912.7 20.619.1200.2
in.6″12.51.58.58.126.633.9401/02/07120.883/4″10.62
mm. 317.538.1215.9206.2168.4100.112.7 22.419.1269.7
in.8″151.6210.6210.258.634.3801/02/071217/8″13
mm. 38141.1269.7260.4219.2111.312.7 25.422.2330.2
in.10″17.51.8812.7512.6210.754.6201/02/07161.121″15.25
mm. 444.547.8323.9320.5273.1117.312.7 28.425.4387.4
in.12″20.521514.7512.755.1201/02/07161.251 1/8″17.75
mm. 520.750.8381374.7323.913012.7 31.828.6450.9
in.14″232.1216.2516.75145.6201/02/07201.251 1/8″20.25
mm. 584.253.8412.8425.5355.6142.712.7 31.828.6514.4
in.16″25.52.2518.519165.7501/02/07201.381 1/4″22.5
mm. 647.757.2469.9482.6406.4146.112.7 35.131.8571.5
in.18″282.382121186.2501/02/07241.381 1/4″24.75
mm. 711.260.5533.4533.4457.2158.812.7 35.131.8628.7
in.20″30.52.52323.12206.3801/02/07241.381 1/4″27
mm. 774.763.5584.2587.2508162.112.7 35.131.8685.8
in.24″362.7527.2527.62246.6201/02/07241.621 1/2″32
mm. 914.469.9692.2701.5609.6168.112.7 41.138.1812.8

ASME B16.36 Orifice flanges Dimensions:

Welding Neck Orifice Flanges
Class 300 | ASME B16.36



Orifice Flanges
Slip-On, Threaded & Welding Neck | Class 400 | ASME B16.36



Orifice Flanges
Slip-On, Threaded & Welding Neck | Class 600 | ASME B16.36



ANSI/ASME steel flanges


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valve components


Plain washer, gasket


Flange Standard



Types of Orifice Flanges


Type Of orifice flanges Available At Best Price

stainless steel orifice flanges

stainless steel orifice flanges

Alloy steel orifice flanges

Alloy steel orifice flanges

Carbon steel orifice flanges

Carbon steel orifice flanges

Duplex steel orifice flanges

Duplex steel orifice flanges

Super Duplex orifice flanges

Super Duplex orifice flanges

Alloy 20 orifice flanges

Alloy 20 orifice flanges

Nickel orifice flanges

Nickel orifice flanges

Inconel orifice flanges

Inconel orifice flanges

 Hastelloy orifice flanges

Hastelloy orifice flanges

Monel orifice flanges

Monel orifice flanges




Steel Flanges Manufacturing Process


We have Supplied Orifice Flanges to below Countries

To buy Orifice Flanges At best price & urgent delivery please mail to info@rameshgroup.com , As we have Our Dealer, Distributors & Direct Sales Representatives in below Countries who will help you to buy Orifice Flanges & will resolve your queries On Orifice Flange.

Malaysia Angola Netherlands
Nigeria Gabon
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 orifice flanges