What is a Blind Flanges?
Blind pipe flanges are widely used in high pressure pipe applications. Carbon Steel Blind flanges are available in raised or RTJ faces. Stainless Steel Blind flanges can be supplied to clients with or without hub as per the requirements. Nickel Alloy Blind flanges are generally used to seal the end of a piping system which helps to prevent the flow of liquids or gases. Monel blind flange are widely used for its corrosion resistant properties against flowing sea water and is widely used for marine applications. The alloy 20 material is invented to contribute exceptional résistance to many corrosive environments. we are manufacturer of alloy 20 blind flanges which can be used in reducing environments that acquire sulphuric acid and phosphoric acid. Blind flange which is used for their resistance to attack by acids and alkalis, as well as their high mechanical strength and good ductility.
Grades of Blind Flanges
- Stainless Steel Screwed / Threaded Flanges: ASTM A182, A240 304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 310H, 321, 321H, 317, 317H, 347, 347H,904L
- Alloy Steel Screwed / Threaded Flanges: ASTM / ASME A/SA 182 & A 387 F1, F5, F9, F11, F12, F22, F91
- Carbon Steel Screwed / Threaded 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, ASTM A350, LF2, LF3
- Duplex & Super Duplex Steel Screwed / Threaded 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 Steel Screwed / Threaded Flanges: ASTM SB 61, SB62, SB151, SB152 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)
- Nickel Alloy Screwed / Threaded Flanges: ASTM SB564, SB160, SB472, SB162 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).
Dimensional Tolerances of Blind Flange ASME B16.5
| Outside Diameter |
Inside Diameter |
| ≤ 24 = 1.6 mm | > 24 = ± 3.2 mm |
not applicable |
| Diameter of Contact Face |
Outside Diameter of Hub |
| 1.6 mm Raised Face = ± 0.8 mm |
≤ 12 = + 2.4 mm / – 1.6 mm | ≥ 14 = ± 3.2 mm |
| 6.35 mm Raised Face, Tongue & Groove / Male-Female = ± 0.4 mm |
|
| Diameter of Counterbore |
Drilling |
| 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. |
| Thickness |
Length thru Hub |
| ≤ 18 = + 3.2 mm / – 0 | ≥ 20 = + 4.8 mm / – 0 |
≤ 18 = + 3.2 mm / – 0.8 mm | ≥ 20 = + 4.8 mm / – 1.6 mm |
ASME B16.5 Blind Flange Types
| Blind Raised Face Flange Manufacturing Company |
Raised Faced Blind Flange Manufacturers |
| ANSI B16.5 Blind Flange Manufacturing Company |
Blind Flange Dimensions |
| ASME B16.5 Blind Flange Manufacturers |
ANSI B16.5 Class 150 Blind Flange |
| Stainless Steel Blind Flange Suppliers |
SS Blind Flange Manufacturing Company |
| Blind Plate Flange Dealer |
ASME B16.47 Series A and B Blind Flange Exporter |
| ANSI B16.5 class 150 Blind Flange Stockholder |
ANSI 150 Blind Flange Distributors |
| Carbon Steel Blind Flange Manufacturing Company |
High Quality Blind Flange Manufacturer |
| ASTM A182 Stainless Steel Blind Flange |
Duplex Steel Blind Flange Manufacturing Company |
| Super Duplex Steel Blind Forged Flange |
Copper Nickel Blind Pipe Flange |
| High Nickel Alloy Blind Flange Manufacturers |
Hastelloy Flat Faced Blind Flange Stockist |
| Titanium ASME B16.47 Series A and B Blind Flange |
Inconel Blind Flange |
Application of Blind Flanges
- Oil Field
- Shipbuilding
- Natural Gas
- Pipe Projects
- Water System
- Electric Power
- Power Plant
- Shipbuilding
- Construction
- Petrochemical
Features of Blind Flanges
- Used with a matching stub-end insert.
- Can rotate to allow for an easy alignment of bolt holes.
- Not recommended in extreme or high-pressure temperature applications.
- Recommended in applications that require frequent dismantling of the flanges and pipe
Advantages of Blind Flanges
- Blind flanges are convenient to install
- They can save a good amount of time and money
- A much more cost efficient way to seal a pipe when doing repairs
Testing of Stainless Steel Blind Flanges
- Macro test
- Micro test
- Chemical test
- Flaring test
- It is like PMI test
- IGC test and hardness test
- Mechanical test and flattening test
Documents We Provide with Stainless Steel Blind Flanges
| Documents like QAP |
Packaging list |
| NABL approved lab test report |
Guarantee letter |
| Raw material test report |
Material Traceability report |
| Commercial invoice to buyers |
The TC like MTC as per EN 10204/3.1B |
| Buyers report |
Third-party test report |
We Export Stainless Steel Blind Flanges Across the Globe!
- MIDDLE EAST: Saudi Arabia, Iran, Ira, Qatar, Bahrain, Oman, Kuwait, Turkey, Yemen, Syria, Jordan, Cyprus
- AFRICA: Nigeria, Algeria, Angola, South Africa, Libya, Egypt, Sudan, Equatorial Guinea, the Republic Of Congo, Gabon
- NORTH AMERICA: USA, Canada, Mexico, Panama, Costa Rica, Puerto Rica, Trinidad And Tobago, Jamaica, Bahamas, Denmark
- EUROPE:Russia, Norway, Germany, France, Italy, UK, Spain, Ukraine, Netherlands, Belgium, Greece, Czech Republic, Portugal, Hungary Albania, Austria, Switzerland, Slovakia Finland, Ireland Croatia, Slovenia, Malta
- ASIA: Singapore, Malaysia, Indonesia, Thailand, Vietnam, South Korea, Japan, Sri Lanka, Maldives, Bangladesh, Myanmar, Taiwan, Cambodia
- SOUTH AMERICA: Argentina, Bolivia, Brazil, Chile, Venezuela, Colombia, Ecuador, Guyana, Paraguay, Uruguay
We Sell Stainless Steel Blind Flanges Across All Major Cities and Industrial Centers in India
Mumbai, Delhi, Bangalore, Hyderabad, Ahmadabad, Chennai, Bhilai, Kochi, Bhavnagar, Siliguri, Visakhapatnam, Jaipur, Ranchi, Kolkata, Pune, Jaipur, Surat, Lucknow, Chandigarh, Bhopal, Patna, Nagpur, Agra, Indore, Kanpur, Varanasi
