Spectacle Flanges
Minimum Order : 100 piece
Customization as per requirements
Spectacle Flanges – Specification
| Flanges Types | Slip On, Weld Neck, Long Weld Neck, Threaded, Companion, Blind, Lap Joint |
|---|---|
| Class | 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 |
| Size | 1/2″ (15 Nb), 48″ (1200nb) Dn10~dn5000 |
| Type | Raised Face (rf), Small Tongue, Groove, Flat Face (ff), Ring Type Joint (rtj), Lap Joint Face (ljf), Small Male Female (smf), Large Tongue & Groove, Large Male Female (lmf) |
Spectacle Flanges
Type of Sub-products

Standard Spectacle Flange Standard Spectacle Flange
The most common design: two discs (one solid, one open) joined by a tie bar. By rotating, operators can quickly switch between flow and isolation without removing the assembly from the line.

Beveled Spectacle Flange Beveled Spectacle Flange
Machined with a beveled sealing edge to improve gasket seating and provide a tighter seal under high pressure or high temperature conditions.

Spectacle Blind With Lifting Eye Spectacle Blind With Lifting Eye
Equipped with a welded lifting lug or eye for safe handling of larger, heavier units during installation or rotation in industrial facilities.
Frequently Asked Questions
Where are Spectacle Flanges commonly used?
They are widely used in process pipelines that require regular isolation for inspection, hydro testing, or repairs. Industries such as petrochemicals, power generation, offshore drilling, LNG terminals, and pulp & paper favor spectacle flanges because they allow quick line blanking without full disassembly. They’re also installed at strategic shutdown points in plants to meet OSHA or API safety requirements.
What standards govern Spectacle Flanges?
Spectacle Flanges are primarily manufactured to ASME B16.48 (Line Blanks), which covers dimensions, tolerances, pressure ratings, and marking. Projects in Europe may also specify EN 1092 1 or DIN standards. Compliance ensures interchangeability, reliable sealing, and global acceptance in regulated industries.
What materials are available for Spectacle Flanges?
Common grades include carbon steel (A105), stainless steel (304, 304L, 316, 316L), low temperature steel (A350 LF2), duplex & super duplex, and high nickel alloys (Inconel, Hastelloy). Material choice depends on fluid type, operating temperature, and corrosion potential. Exotic alloys are often specified for offshore or sour service conditions to meet NACE MR0175 requirements.
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Countries We Export – Spectacle Flanges
- India
Cities We Supply – Spectacle Flanges
- Mumbai
- Lucknow
- Nashik
- Pune
- Rajkot
- Moradabad
- Angul
- Rudrapur
- Hosdurg
- Gandhinagar
- Rajahmundry
- Durgapur
- Bharuch
- Panipat
Industries We Serve – Spectacle Flanges
Sugar
Oil And Gas Industries
Paper Mill
Power Plant
Bridge And Building
Aerospace Industries
Automobile Industry
Electrical Industry
Defense Industry
Construction & Fabrications
Ring Man Units
Railways

Gasket Industry
Pharmaceuticals Industry
