Industrial Pipe Flanges Supply in Qatar
Flanged connections provide the essential demountable joints needed for equipment connection, valve installation, and maintenance access. Qatar Piping supplies certified forged steel flanges manufactured to ASME B16.5 (up to NPS 24") and ASME B16.47 (NPS 26" to 60") across all standard pressure classes from 150# to 2500#.
Engineering Specifications & Capabilities
| Size Range | NPS 1/2" to 60" (DN15 to DN1500) |
|---|---|
| Pressure Classes | Class 150, 300, 600, 900, 1500, 2500 (PN16 to PN420) |
| Facing Types | Raised Face (RF 125-250 AARH serrated finish), Flat Face (FF), Ring Type Joint (RTJ) |
| Materials | ASTM A105, ASTM A350 LF2, ASTM A182 F304/304L, F316/316L, F51 (Duplex 2205), F53 (Super Duplex) |
Key Specifications & Types Available
Weld Neck Flanges (WN)
High-integrity tapered hub flanges butt-welded to pipe; ideal for severe pressure and cyclic conditions.
View Weld Neck Flanges (WN) Specifications →Slip-On Flanges (SO)
Economical flanges that slide over pipe and are double fillet welded; widely used in low-pressure utility lines.
View Slip-On Flanges (SO) Specifications →Blind Flanges (BL)
Solid discs used to seal the ends of piping manifolds, pressure vessel nozzles, and inspection ports.
View Blind Flanges (BL) Specifications →Socket Weld Flanges (SW)
Counter-bored flanges for small bore piping (NPS 1/2" to 2") with high fatigue resistance.
View Socket Weld Flanges (SW) Specifications →Lap Joint Flanges (LJ)
Used with stub ends for systems requiring frequent dismantling or quick bolt hole alignment.
View Lap Joint Flanges (LJ) Specifications →Threaded Flanges (TH)
Flanges threaded internally with NPT threads, allowing connection without welding.
View Threaded Flanges (TH) Specifications →Governing Standards
- ASME B16.5
- ASME B16.47 Series A & B
- MSS SP-44
- API 6A (Wellhead Equipment Flanges)
QA & Verification Testing
Flange face roughness measurement (AARH / Ra check), PMI testing, ultrasonic testing for internal forgings, dimensional tolerance checks.
Related Services & Technical Articles
Request Pricing for Industrial Pipe Flanges
Submit your piping schedule, isometric drawings, or material take-offs. Our technical engineering team evaluates specifications to deliver accurate pricing and execution schedules.