ASME/ANSI B16.5 Blind Flanges / BLRF Flanges Manufacturers

ASME/ANSI B16.5 Blind Flanges / BLRF Flanges Manufacturers in India

Blind Flanges, BLRF Flanges, Stainless Steel Blind Flanges, SS Blind Flange Manufacturer, Carbon Steel Blind Flanges Suppliers in UAE, Malaysia, Indonesia

Govt. recognised export house & Stainless Steel Flanges manufacturer, distributor & stockholder of Stainless Steel Flanges topmost brands. European Stainless Steel Flanges, Stainless Steel Threaded Flange, ASTM A182 Stainless Steel Flanges, Stainless Steel Pipe flanges, Stainless Steel flanges supplier, DIN Flanges, ASTM A182 Stainless Steel socket weld flanges, Stainless Steel weld neck flanges, Stainless Steel slip on flanges, Stainless Steel plate flanges, ASTM A182 Stainless Steel blind flanges, Stainless Steel flat flanges, Stainless Steel BLRF flanges, Stainless Steel SORF flanges, Stainless Steel RTJ Flanges, Stainless Steel SWRF flanges manufacturer, distributor & dealer in UAE, UK & USA


Stainless Steel Flanges manufacturers in IndiaAshtapad is a specialised manufacturer of high quality ASME/ANSI/DIN industrial Blind Flanges in India. We offer immediate delivery programs for standard size of carbon steel Blind Flanges and stainless steel Blind Flanges. Plate Blind Flanges manufactured in special stainless steel grades, nickel alloy and alloy steel can be supplied with just in time programs.

Commonly referred as blanking flanges, Blind pipe flanges are widely used in high pressure applications. Blind Flanges are generally used to seal the end of a piping system to prevent flow of liquids or gases. The use of Blind Flanges allows ease of access to a piping system once it has been closed.

Our Blind Flanges are available with raised or RTJ faces and also with female threads. Blind Flanges can be supplied with or without hub as per the customer requirements.

We offer blind plate flanges manufactured at our facility to companies in various industries including shipbuilding, power generation, petrochemical plants, oil refineries, waste water treatment plants, paper mills, pharmaceutical plants and turnkey projects among others.

Our products are widely exported to countries and regions such as the United States, Europe, Russia, Turkey, Malaysia, the UAE, Saudi Arabia, Iran, Brazil, Chile, Mexico, South Africa, Jordan, Tunisia, Vietnam, Indonesia, Thailand, Singapore, Colombia, and Sri Lanka.

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

Standards: ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, 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 Blind 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 Flanges, Spacer Ring/Spade Flange), Steel RST37.2, C22.8

Stainless Steel Blind Flanges: ASTM A182 F202, F304/304L/304H, F316/316L, F316H, F316TI, F310, F321, F904L

Duplex Steel/ Duplex Stainless Steel 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)

Alloy Steel Blind Flanges: ASTM A182 F1, F5, F9, F11, F22, F91

Special Steel Blind Flanges: Duplex, Super Duplex, Nickel Alloys, 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).

Copper Nickel/ Copper Alloy Blind Flanges: UNS No. C 10100, 10200, 10300, 10800, 12000, 12200, 70600, 71500, UNS No. C 70600 (Cu -Ni- 90/10), C 71500 (Cu -Ni- 70/30).

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

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

Marking & Packing

Products are packaged to ensure that there is no damage during transit. In case of exports, standard export packaging is done in wooden cases. All flanges are marked with Grade, Lot No, Size, Degree and our trade mark. On special requests we can also, make custom marking on our products.

Quality Assurance

At Ashtapad, all fittings and flanges are subject to strict inspection at each stage of the production process, from starting material purchasing to product dispatch. They are visually examined for conformity to ASTM, ASME, MSS, DIN, EN, and JIS codes and standards. Upon request, official certified Inspection Agencies can be called in to witness the material reports, dimensions and quality conformity of products.

Test Certificates: Manufacturer Test Certificate as per EN 10204 / 3.1B, Raw Materials Certificate, 100% Radiography Test Report, Third Party Inspection Report

We have our sales executive in Indonesia, Singapore, Malaysia, Saudi Arabia, KSA, Iran, UAE, Qatar, South Africa, UK, USA, Mexico,Thailand, Kuwait, Belgium, Cyprus, Angola, Taiwan, Austria, Chile, India, China, Canada, Bangladesh, Oman, Israel, Myanmar (Burma),Zambia, South Korea, Japan, Turkey, Egypt, Vietnam, Nigeria for detailed information about Stainless Steel Pipe Fittings & Flanges & quick delivery of SS Flange globally.

Type of Blind Flanges – Specifications, Dimensions Blind Flanges

  • ANSI/ASME B16.5 Blind Flanges 150lb
  • ANSI/ASME B16.5 Blind Flanges 300lb
  • ANSI/ASME B16.5 Blind Flanges 400lb
  • ANSI/ASME B16.5 Blind Flanges 600lb
  • ANSI/ASME B16.5 Blind Flanges 900lb
  • ANSI/ASME B16.5 Blind Flanges 1500lb
  • ANSI/ASME B16.5 Blind Flanges 2500lb
  • ANSI/ASME B16.47 Series B Blind Flanges 75lb
  • ANSI/ASME B16.47 Series B Blind Flanges 150lb
  • ANSI/ASME B16.47 Series B Blind Flanges 300lb
  • ANSI/ASME B16.47 Series B Blind Flanges 400lb
  • ANSI/ASME B16.47 Series B Blind Flanges 600lb
  • ANSI/ASME B16.47 Series B Blind Flanges 900lb
  • ANSI/ASME B16.47 Series A (MSS SP44) Blind Flanges 150lb
  • ANSI/ASME B16.47 Series A (MSS SP44) Blind Flanges 300lb
  • ANSI/ASME B16.47 Series A (MSS SP44) Blind Flanges 400lb
  • ANSI/ASME B16.47 Series A (MSS SP44) Blind Flanges 600lb
  • ANSI/ASME B16.47 Series A (MSS SP44) Blind Flanges 900lb

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Dimensional Tolerances of Blind Flanges ASME B16.5

Outside Diameter

≤ 24 = 1.6 mm | > 24 = ± 3.2 mm

Inside Diameter

not applicable

Diameter of Contact Face

1.6 mm Raised Face = ± 0.8 mm

6.35 mm Raised Face, Tongue & Groove / Male-Female = ± 0.4 mm

Outside Diameter of Hub

≤ 12 = + 2.4 mm / – 1.6 mm | ≥ 14 = ± 3.2 mm

Diameter of Counterbore

not applicable


Bolt Circle = 1.6 mm | Bolt Hole Spacing = ± 0.8 mm

Eccentricity of Bolt Circle with Respect to Facing

≤ 2½ = 0.8 mm max. | ≥ 3 = 1.6 mm max.


≤ 18 = + 3.2 mm / – 0 | ≥ 20 = + 4.8 mm / – 0

Length thru Hub

≤ 18 = + 3.2 mm / – 0.8 mm | ≥ 20 = + 4.8 mm / – 1.6 mm



Blind Flanges DIN/ EN

  • Blind Flanges pressure ranges
  • Blind Flanges PN 6
  • Blind Flanges PN 10
  • Blind Flanges PN 16
  • Blind Flanges PN 25
  • Blind Flanges PN 40
  • Blind Flanges PN 63/64
  • Blind Flanges PN 100
  • Blind Flanges PN 160
  • Blind Flanges PN 250
  • Blind Flanges PN 320
  • Blind Flanges PN 400
  • Blind Flanges with raised face
    • Blind Flanges PN 10
    • Blind Flanges PN 16
    • Blind Flanges PN 40
  • Blind Flanges T-Type
  • Blind Flanges Groove and Tongue

Blind Flanges similar to DIN

  • red. thickness Blind Flanges
    • Blind Flanges PN 6
    • Blind Flanges PN 10
    • Blind Flanges PN 16
  • aluminium Blind Flanges
    • aluminium blank Blind Flanges
      • Alu-Blind Flanges PN 10
    • epoxy coated Blind Flanges
      • Alu-Blind Flanges PN 10
  • sheet construction Blind Flanges
    • Blind Flanges PN 16
  • Blind Flanges with center hole
    • Blind Flanges with centrical through hole
    • Blind Flanges with tapped through hole
  • Blind Flanges ANSI
    • ANSI B 16.5 Blind Flanges 150 lbs
    • ANSI B 16.5 Blind Flanges 300 lbs
    • ANSI B 16.5 Blind Flanges 600 lbs
    • ANSI B 16.5 Blind Flanges 900 lbs
    • ANSI B 16.5 Blind Flanges 1500 lbs

Type of Blind Flanges in Stock:

  • industrial Blind Flanges
  • industrial blind
  • industrial blinds
  • Stainless Steel 304 / 304L Blind Flanges
  • Stainless Steel 310/310S Blind Flanges
  • Stainless Steel 316/316L Blind Flanges
  • Stainless Steel 317/317L Blind Flanges
  • Stainless Steel 321/321H Blind Flanges
  • Stainless Steel 347/347H Blind Flanges
  • Stainless Steel 446 Blind Flanges
  • A350 LF2 Blind Flanges
  • Carbon Steel Blind Flanges
  • A105 Blind Flanges
  • A105N Blind Flanges
  • AISI 4130 Blind Flanges
  • AISI 4140 Blind Flanges
  • A182 F1 Blind Flanges
  • A182 F5 Blind Flanges
  • A182 F9 Blind Flanges
  • A182 F11 Blind Flanges
  • A182 F22 Blind Flanges
  • A182 F91 Blind Flanges
  • Nickel 200 / 201 Blind Flanges
  • Monel 400 Blind Flanges
  • Monel K500 Blind Flanges
  • Inconel 600 Blind Flanges
  • Inconel 625 Blind Flanges
  • Inconel 718 Blind Flanges
  • Incoloy 800 Blind Flanges
  • Incoloy 825 Blind Flanges
  • Hastelloy C276 Blind Flanges
  • Hastelloy C22 Blind Flanges
  • Hastelloy B2 Blind Flanges
  • Alloy 20 Blind Flanges
  • 904L Blind Flanges
  • Titanium Gr 2 Blind Flanges
  • Titanium Gr 5 Blind Flanges
  • Cu-Ni 90/10 (C70600) Blind Flanges
  • Cu-Ni 70/30 (C71500) Blind Flanges
  • ASME B16.47 Stainless Steel WNRF Flanges
  • ASTM B564 Stainless Steel Flanges
  • AISI B16.47 SS Flanges
  • Stainless Steel Gas Pipe Flange
  • Stainless Steel slip flange
  • Stainless Steel vacuum flange
  • Stainless Steel water pipe flange
  • ansi b16 5 flange manufacturer in India
  • Stainless Steel top flange
  • Stainless Steel High Pressure Flanges
  • A182 Flanges manufacturer in India
  • A105 Flanges manufacturer in India
  • A105N Flanges manufacturer in India
  • Stainless Steel overlay Flanges
  • Stainless Steel Inlay Flanges
  • Stainless Steel Flanges manufacturer in India
  • Stainless Steel bolted Flanges
  • nickel-based alloy Stainless Steel Flanges
  • EXTRA HEAVY DUTY Stainless Steel Flanges
  • Stainless Steel hydraulic square Flanges
  • Stainless Steel Square Pipe Flanges
  • High precision Stainless Steel Flanges
  • High tensile Stainless Steel Flanges
  • Stainless Steel Industrial Pipe Flanges
  • Stainless Steel Pipe Flanges manufacturer in India
  • Stainless Steel Overlaying trim Flanges
  • Raised Face (RF) Stainless Steel Flanges
  • Flat Face (FF) Stainless Steel Flanges
  • Ring-Type Joint (RTJ) Stainless Steel Flanges
  • Stainless Steel Ring Type Joint gaskets
  • Tongue-and-Groove (T&G) Stainless Steel Flanges
  • Male-and-Female (M&F) Stainless Steel Flanges
  • Stainless Steel Spades and Ring Spacers
  • Stainless Steel Expander Flanges
  • ASME B16.5 Stainless Steel Flanges
  • ASTM B472 Stainless Steel Flanges
  • ASME SB 160 Stainless Steel Loose Flanges
  • Stainless Steel Nipo Flanges Manufacturer
  • 150 LBS Stainless Steel Flanges
  • 300 LBS Stainless Steel Flanges
  • 600 LBS Stainless Steel Flanges
  • 900 LBS Stainless Steel Flanges
  • 1500 LBS Stainless Steel Flanges
  • 2500 LBS Stainless Steel Flanges
  • IBR Approved Stainless Steel Flanges
  • Nace Certified Stainless Steel Flanges
  • Stainless Steel slip on pipe flange
  • Stainless Steel paddle blind flange
  • Stainless Steel flat face flange
  • Stainless Steel flange sorf manufacturer in India
  • Stainless Steel lapped flange
  • Stainless Steel Flanges supplier in singapore
  • Stainless Steel Flanges UK
  • Stainless Steel pipe Flanges UK
  • Stainless Steel Flanges manufacturers UK
  • Stainless Steel Flanges suppliers UK

Blind Flanges sizes:

  • 1/2" Blind Flanges
  • 3/4" Blind Flanges
  • 1" Blind Flanges
  • 1 1/4" Blind Flanges
  • 1 1/2" Blind Flanges
  • 2" Blind Flanges
  • 2 1/2" Blind Flanges
  • 3" Blind Flanges
  • 3 1/2" Blind Flanges
  • 4" Blind Flanges
  • 5" Blind Flanges
  • 6" Blind Flanges
  • 8" Blind Flanges
  • 10" Blind Flanges
  • 12" Blind Flanges
  • 14" Blind Flanges
  • 16" Blind Flanges
  • 18" Blind Flanges
  • 20" Blind Flanges
  • 22" Blind Flanges
  • 24" Blind Flanges

Customized sizes also available with Ashtapad, kindly contact us to send your requirements.