06 // Industrial Flanges

Threaded Flanges

VEFLOX Threaded Flanges are engineered for rapid assembly in non-welded piping systems. Featuring precision-cut internal taper threads, these flanges enable secure, leak-proof connections that can be screwed directly onto compatible threaded pipe ends. This makes them the definitive solution for high-safety environments where welding is prohibited or for low-pressure systems where quick field assembly is essential.

No Welding Required

Detailed Technical Specifications

Flange Profile

Threaded Flange: Features a precision-tapped internal bore designed to match standard tapered pipe threads, allowing for a mechanical connection rather than a fused joint.

Thread Standards

NPT (National Pipe Taper): ASME B1.20.1
BSPT (British Standard Pipe Taper): ISO 7-1 / EN 10226-1

Dimensional Standards

ASME/ANSI B16.5 (Standard for sizes up to 24"), EN 1092-1, BS 4504, JIS B2220

Pressure Ratings (Class)

ASME/ANSI: Available up to Class 1500# (dependent on pipe schedule/wall thickness).

Material Grades

Carbon Steel: ASTM A105 / A105N, A350 LF2
Stainless Steel: ASTM A182 F304/304L, F316/316L, F321
Alloy & High Nickel: ASTM A182 F11, F22, F51, Inconel, Monel

Facing Types

Raised Face (RF) or Flat Face (FF). Machined with 125-250 AARH serration for superior gasket bite.

Manufacturing Process

Forged for uniform structure, followed by precision CNC tapping of the internal threads to ensure optimal engagement length.

Core Advantages

Hazardous Zone Compatibility

Perfect for refineries, fuel depots, and chemical plants where welding or open-flame operations pose a significant fire hazard and require expensive hot-work permits.

Rapid Field Assembly

Threaded flanges do not require skilled welders or complex radiographic testing. They can be installed quickly by mechanical fitters using standard pipe wrenches and thread sealing compounds.

Dismantling Versatility

The mechanical thread allows the flange to be backed off and removed easily. This makes it an ideal choice for testing rigs, temporary lines, or process skids that are frequently reconfigured.

Industries Served

Oil & Gas

Petrochemicals

Power Generation

Water Treatment

Shipbuilding

Pharmaceuticals