Flanges and Flange Assemblies
* All Products are produced to order. No Stock Products.
About Flanges (Angle Rings, Flange Clamps, Tubing Clamps, etc.)
When Roll Formed Metal Angles are bent inline into rings in our Angle forming process, they are called Flanges when
they are bent inline with the leg out. Another way to think of the Leg-Out position is by laying the ring on a flat tabletop.
When that occurs, as seen in the photo image below, there is a leg that points outward from the center of the ring and that
leg is parallel with the table top.
The Metal Flanges made in our forming process fills a niche in the industry giving lower prices when compared to Flanges
manufactured in other ways. There is a 500 piece minimum due to the inline bending required added to the forming process
that makes the Angle in straight form. Quantity is required to make our Ferrous and Non-Ferrous metal Flanges available in
a lower priced quotation by amortizing our fixed die setup costs. The higher the volume, the lower the cost will be. When
quantities are below 500 pieces annually, the standard flanges kept in stock by other
companies or produced by other methods, can become less expensive than our Flanges at lower volume than 500 pieces.
Contact Johnson Brothers for a quote on angle rings, clamp bands, angle flanges, light clamps, and more.
Flanges are also provided by Johnson Bros. with end brackets and other assemblies attached
wherever necessary for a complete flange ready for customer use.
Other ways to produce flanges that we do not do, would be: buying mill hot rolled or extruded angle in straight lengths, then bending them one at a time in a 3 roll bending unit and trimming and welding the ends, whereas our forming is a continuous process with flange angle rings coming out as spirals before cutting to length. Another production method is casting. This process gives a seamless flange with no end welding or cutting to length. Flanges are then machined many times to close tolerances afterwards. This is an expensive method but gives high quality parts. Our company does not carry flanges in stock unless they are part of a blanket purchase order.
Johnson Bros. does not produce or offer Flanges that are: ASME, ASTM, AISC, ASM certified
How Flanges (Cylinder Clamps, Ribs, Pipe Clamps etc.) are Produced
Our Flanges can be produced from HRP&O, CRS-CQ, Pre-Galvanized, Stainless, Aluminum, Brass, Alloys, High Strength Steel, Bronze and even Copper. After the ends are cut-to-length, they can be welded or have attachments to make them into Flanges that may be called Pipe Clamps, Flange Clamps, Tube Clamps, Tubing Clamps, Cylinder Clamps, Clamp Rings, Angle Rings, Clamp Bands, Rims, Orafice Rings, Ribs, Ribbing, Vent Clamps, Boots for architectural columns, Casings, etc.
The Flange Forming process we utilize, allows us to perform inline and secondary fabrications to the Flanges, such as: Holes, Perforations, Embossings, Cut-to-Length only, End Fabrications (some of which may be needed to mount attachments so they become clamps), Slots, Cutouts, Part Identifications, Notches and more.
As with all rings we manufacture there is a direct correlation of diameter to size of outward leg. The larger that leg becomes, the bigger the diameter is required. Thicknesses we manufacture Flanges from can range from .010" thru .125" thick. ( thicker than .125" is only possible with Aluminum).
Request a quote for flanges, angle rings, clamp bands, angle flanges, light clamps, and more today.
General rules for production of our Flanges are:
- Thicker is better than thinner and can prevent waviness in the leg-out.
- The smaller a diameter is, requires a smaller, shorter leg-out to prevent waviness.
- The leg-out should be kept shorter than the other leg to prevent twist and waviness.
- The higher the volume, the more inline fabricating becomes cost reducing.
- To help avoid a pigtail twist that becomes apparent at the ends, the opposite leg from the leg-out should not be too long. That opposite Leg can be longer as the the diameter increases. Pigtailing may be required when a diameter is greatly reduced. This does not happen with the other methods of flange manufacturing above, that our company does not do.
Find decorative rings, reinforcement rings, tank rings, lense rings, and v-bands from Johnson Brothers.
To see more of our products please see our catalog information.