Blind Flanges
Blind Flanges
A Blind Flanges is a tool that is extensively used in joining pipes. A well-known, effective and reliable joining method for tubes and pipes, it is used in multiple commercial and business sectors where long tubes/pipes have to be connected. Whether it is construction, drilling, sewerage, or any other field, Blind Flanges are used in pipes when joints need to be dismantled, inspected or adjusted. It is used so that the pipes can be disassembled in future for maintenance and to fix blockages or leaks if they take place in the pipe. A Blind Flanges is a very important part of pipes and tubes and has been in use for years. However, with time, it has undergone several changes. Today, Blind Flanges are available in different designs with improved functionality.
One can find Blind Flanges, socket-weld flanges, lap joint flanges, slip-on flanges, blind flanges, weld neck flanges, and more in the market. These Blind Flanges have their own specialty and make joining pipes a cakewalk with their smooth and hassle-free technique. For example, Blind Flanges are used where space is scarce and dismantling is required more often while Blind Flanges are utilized in process piping where piping is done under high pressure and high-temperature conditions.
FLANGE PRODUCTS
Why buy Blind Flanges from Rexal Tubes?
Industries across the board need these Blind Flanges for their industrial operations and Rexal Tubes offers the best and most diverse Blind Flanges to serve the different requirements. We have been supplying pipes, tubes and Blind Flanges to clients across the globe for fifteen years. Our premium quality Blind Flanges made of carbon steel, alloy steel, low temperature steel and high temperature steel have powered pipes in different industries and work as the ultimate joints in thousands of locations under diverse circumstances. Strong, sturdy, durable and cost-effective, our Blind Flanges have it in them to work under tough conditions and this is made possible by modern manufacturing process that we follow at our plants.
Our equipment and tools are first-rate and we procure them after extensive research and inspection from well-known suppliers. The same applies to the raw material. The methods applied in production are also the best in the industry and most importantly, we follow the quality-control standards strictly. Every step is taken to make sure that the Blind Flanges adhere to the norms prescribed by the national and international regulatory bodies. We always keep ourselves up-to-date with the latest developments and give special emphasis on innovation so that the customers get novel offerings and we are at the forefront of the market. We also feel that it is our responsibility to ensure that the delivery reaches the different locations safely and on time.
Blind Flanges Applications
The Blind Flanges procured from Rexal Tubes are applied in tubes and pipes in numerous industries. They are an integral part of the pipeline system in diverse fields such as petroleum, water, oil & gas, pharmaceuticals, desalination, dairy & food processing, refinery & petrochemicals,breweries, and others. The Blind Flanges are applied to connect pipes, pumps, valves, and other equipment to create a piping system. The advantage with Blind Flanges is that they offer a lot of flexibility. They are detachable and hence, can be removed and fixed again after inspection or adjustment.
Flexibility is the prime feature of Blind Flanges and it works in different fields because piping systems have different requirements and need flexible setting. Also, some pipe systems are quite long and cannot be installed and maintained without the help of Blind Flanges. So, Blind Flanges have become a part and parcel of the pipes/tubes system and since they are available in different dimensions and specifications, it is completely possible to meet the unique industrial requirements.
Blind Flanges Description
Other Name: BLIND FLANGES, BLRF FLANGES, BLFF FLANGES, BLIND FLANGES RF, B16.5, ASTM A105, BLANK FLANGES
Blind pipe flanges are pipe flanges used to seal the end of a piping system or pressure vessel openings to prevent flow. Blind pipe flanges are commonly used for pressure testing the flow of liquid or gas through a pipe or vessel.
Standard: ANSI, ASME, ASA B16.5
Size: 1/2” – 48”
Material: ASTM A105, CARBON STEEL
Supply Ability: 3000Ton/Month
Process: Forged, Forging
Packing: Plywood Pallets
Payment Terms: T/T, L/C, D/P
BLIND FLANGES, BLANK FLANGES, BLFF FLANGES, BLRF FLANGES, monthly output 3000Ton, material carbon steel & Stainless Steel.
Norms & Types
- BLIND FLANGES RF, BLRF FLANGES, BLANK FLANGES, BL FLANGES RAISED FACE, CLASS 150, 150LBS, 150#, 1/2″ – 48″, ASTM A105.
- BLIND FLANGES RF, BLRF FLANGES, BLANK FLANGES, BL FLANGES RAISED FACE, CLASS 300, 300LBS, 300#, 1/2″ – 48″, ASTM A105.
- BLIND FLANGES RF, BLRF FLANGES, BLANK FLANGES, BL FLANGES RAISED FACE, CLASS 600, 600LBS, 600#, 1/2″ – 48″, ASTM A105.
- BLIND FLANGES RF, BLRF FLANGES, BLANK FLANGES, BL FLANGES RAISED FACE, CLASS 900, 900LBS, 900#, 1/2″ – 48″, ASTM A105.
- BLIND FLANGES RF, BLRF FLANGES, BLANK FLANGES, BL FLANGES RAISED FACE, CLASS 1500, 1500LBS, 1500#, 1/2″ – 48″, ASTM A105.
- BLIND FLANGES RF, BLRF FLANGES, BLANK FLANGES, BL FLANGES RAISED FACE, CLASS 2500, 2500LBS, 2500#, 1/2″ – 48″, ASTM A105.
Material
1) ASTM A105, A105N
Surface Antirust:
Surface antirust 1: Antirust light oil
Surface antirust 2: Black paint coating
Surface antirust 3: Yellow paint coating or Red paint coating
Surface antirust 4: Galnavized (Hot galvanized or Cold galvanized or Electro Galvanized)
Surface Finish:
Surface finish 1: Stock finish
Surface finish 2: Sprial serrated
Surface finish 3: Two or three grooves (Water Lines)
Surface finish 4: Smooth finish
Blind Flanges Dimensions & Tolerances
NPS 1/2
Class | 150 | 300 | 400 | 600 | 900 | 1500 | 2500 |
Diameter – D | 90 | 95 | 95 | 95 | 120 | 120 | 135 |
Height – B | 9.6 | 12.7 | 14.3 | 14.3 | 22.3 | 22.3 | 30.2 |
11.2 | 14.3 | 20.7 | 20.7 | 28.7 | 28.7 | 36.6 | |
Diameter – G | 35.1 | 35.1 | 35.1 | 35.1 | 35.1 | 35.1 | 35.1 |
Diameter – K | 60.3 | 66.7 | 66.7 | 66.7 | 82.6 | 82.6 | 88.9 |
Bolt Holes | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
Diameter – L | 15.9 | 15.9 | 15.9 | 15.9 | 22.2 | 22.2 | 22.2 |
Stud Bolts Diameter x Length | |||||||
Diameter (in) | 1/2 | 1/2 | 1/2 | 1/2 | 3/4 | 3/4 | 3/4 |
Length (mm) | 55 | 65 | 75 | 75 | 110 | 110 | 120 |
———————– > NPS <--------------------
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 |
Drilling 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 ≤ 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 |
Notes
- Dimensions are in millimeters unless otherwise indicated.
- The length of the stud bolt does not include the height of the chamfers (points).
Blind Flanges Product Range
Range
½” (15 NB) to 48″ (1200NB) in 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS ASA 150, ASA 300, PN 6,10,16, 25, 40,64,100,160 ETC. Available with NACE MR 01-75
Stainless Steel Blind Flanges
Grade : 304, 304L, 304H, 309, 310, 310S, 316, 316Ti, 316 L, 317, 317L, 321, 347, 347 H, 409, 410, 410S, 420, 430L
Duplex Steel Blind Flanges
Grade : 2205 (UNS No. S31803), 2507 (UNS No. S32750)
Nickel Alloy Blind Flanges
Grade : 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 Alloy Blind Flanges
Grade : 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)
Blind Flanges Standard
ANSI : ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48
DIN : DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642, DIN2655, DIN2656, DIN2627, DIN2628, DIN2629, DIN 2631, DIN2632, DIN2633, DIN2634, DIN2635, DIN2636, DIN2637, DIN2638, DIN2673
B.S : BS4504, BS4504, BS1560, BS10
OTHER : PLATE, PLATE BLANK
Value Added Services for Blind Flanges
HOT DIPPED GALVANIZING
HEAT TREATMENT
CNC MACHINING
THREADING
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Contact
sales@rexaltubes.in / info@rexaltubes.in
+91-22-66518638
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