We engineer, manufacture and market Blind Flange and high nickel alloys.
We manufacture & export world-class performance Blind Flange
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Type of Flanges
- Welding Neck Flange
- Blind Flange
- Slip On Flange
- Socket Weld Flange
- Lap Joint Flange
- Threaded Flange
- Reducing Flanges
- Spectacle Blinds
- Spades and Ring Spacers
- Square Flange
- Orifice Flanges
- RTJ Flanges
Blind Flange produced in our Mumbai factory, carries a promise of quality and consistency. Metal-Tech Engineers continues to meet customers’ needs through global quality standards from original design to distribution. Metal-Tech Engineers manufactures to global standards. We are one of the leading importer, stockholder, suppliers & exporters dealing in Blind Flange since 1990. When procuring raw materials to manufacture Blind Flange, our primary responsibility is to ensure that same quality and consistency exists in our supply base.
Blind flange (blind flange) also called blind plate, not the middle hole of the flange, sealed pipe plug for use. Sealing surface in the form of more types, there are flat, convex, concave and convex surfaces, tongue and groove, ring joint face.
Metal Tech is excellently equipped for the production of tailor-made, high-grade flanges. In our forging shop, an advanced, automatically controlled steel bar furnace with a length of over 12 m heats the raw material up to approx. 1,100°C before rings or flanges with an outside diameter of up to 2,800 mm are formed using our face plate bending machine.
Blind Flange Specification
Stainless Steel Blind Flange | Carbon Steel Blind Flange | Nickel Alloys Blind Flange
ANSI ASME B16.47 Ser.A
» Blind Flange 150lb Ser.A (MSS SP44) BL
» Blind Flange 300lb Ser.A (MSS SP44) BL
» Blind Flange 600lb Ser.A (MSS SP44) BL
» Blind Flange 900lb Ser.A (MSS SP44) BL
ANSI ASME B16.47 Ser.B
» Blind Flange 75lb Ser.B (API)BL Flange
» Blind Flange 150lb Ser.B (API)BL Flange
» Blind Flange 300lb Ser.B (API)BL Flange
» Blind Flange 600lb Ser.B (API)BL Flange
» Blind Flange 900lb Ser.B (API)BL Flange
Blind Flange Dimensions and Tolerances
| 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 | 1/2 | 3/4 | 1 | 1¼ | 1½ | 2 | 2½ | 3 | 3½ | 4 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 24 |
--------------------------------------------------------------------------------- > 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
1. Dimensions are in millimeters unless otherwise indicated.
2. The length of the stud bolt does not include the height of the chamfers (points).
Blind Flange Packaging
Package details: wooden case, pallet or according to customer's requirement
We export to:
Exporter & Suppliers of Blind Flange in Dubai, Saudi Arabia, Qatar, West Africa, Russia, Kuwait etc.
Blind Flange Materials
Products
AN ISO 9001:2008 Certified Company