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02 // Industrial Flanges

Slip On Flanges

VEFLOX manufactures premium Slip On Flanges designed for streamlined pipeline fabrication and cost-effective assembly. Engineered with an internal bore slightly larger than the connecting pipe's outer diameter, these flanges slip directly over the pipe end and are secured via internal and external fillet welds, making them the optimal choice for low-to-moderate pressure fluid systems.

Industrial Slip On Flanges
Rapid Fabrication & Alignment

Detailed Technical Specifications

Flange Profile
Standard Slip On (SORF/SOFF): Low hub profile designed to slip over the pipe.
Reducing Slip On: Used to connect a larger pipe size to a smaller valve or equipment nozzle without a separate reducer fitting.
Dimensional Standards
ASME/ANSI B16.5 (1/2" to 24"), EN 1092-1, DIN 2573/2576, BS 4504, JIS B2220
Pressure Ratings (Class)
ASME/ANSI: 150#, 300#, 600#, 900#, 1500#
DIN/EN: PN6, PN10, PN16, PN25, PN40
Material Grades
Carbon Steel: ASTM A105 / A105N, A350 LF2 / LF3
Stainless Steel: ASTM A182 F304/304L, F316/316L, F321, F347
Alloy & High Nickel: ASTM A182 F11, F22, Inconel, Monel, Hastelloy
Bore Tolerances
Precision machined to be fractionally larger than the Outer Diameter (OD) of the connecting pipe to allow for a smooth slip-fit prior to welding.
Facing Types
Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ). Finishes available in Smooth or Serrated (125-250 AARH).
Welding Protocol
Secured using a double fillet weld configuration (one weld on the inside rim, one on the outside hub) to prevent leakage and reinforce the joint.

Core Advantages

Forgiving Pipe Alignment

Because the pipe slips inside the flange, longitudinal alignment is highly forgiving. The pipe can be cut to length without the need for micro-millimeter accuracy, drastically speeding up fieldwork.

Cost-Effective Procurement

Slip On Flanges require less raw material and less complex CNC machining than Weld Neck Flanges, making them a highly economical choice for large-scale, low-pressure piping networks.

No Beveling Required

Unlike butt-weld fittings, the connecting pipe ends do not need to be carefully machine-beveled. A simple straight square cut is all that is required before applying the fillet welds.

Industries Served

Oil & Gas
Petrochemicals
Power Generation
Water Treatment
Shipbuilding
Pharmaceuticals