“It’s all about Efficiency”

“It’s all about efficiency” that’s the slogan of R&L Manufacturing. Starting from a simple inquiry by a specification engineer to remove the internal fusion beads out of HDPE piping, R&L manufacturing was born. Incorporated in April 2000, with the design of the Bead Trimmer which proved as functional as their slogan, R&L stepped into the thermoplastic tooling manufacturing industry. Now after a decade of growth, R&L Manufacturing has released three lines of products; the Bead Trimmer, the External LD (large diameter) Bead Trimmer, and the Pneumatic Bead Trimmer. Looking ahead into the next decade, R&L manufacturing is set for continued growth along with the thermoplastic piping industries and more. With our slogan as our guide to product design and applications you won’t be let down. You can expect to see us stepping forward with new ideas and products to help serve the needs of the industry.

Why Remove the Internal Bead?


Even though flow reduction is virtually nonexistent. There is still a restriction at the bead location. Among other reasons this can be a problem when pigging for blockage and biofilm or when HDPE is used as a casing for telecommunication conduits.


It's easy to understand how sediment can build against a bead during a slow flow rate. This is the beginning of blockage as large debris become embedded in the sediment. Think about push joint piping systems and how every 13' or 20' this problem occurs compared to thermoplastic fused pipe where welds at lengths of 40 feet or more in distance is the standard along with complete internal bead removal.


In the potable water industry biofilm can stage a footing from under the fusion bead. In addition bacteria or other particle entrapment is of great concern in industries where it's common to use fusible plastics in de-ionized water systems. Most entrapment concerns are strongest in systems where chemical purification isn't an option because of other reaction problems it brings to the system. In push joint piping systems the bacteria entrapment can't be removed and is always a concern.


With increased flow the bead creates a turbulence that generates wear when slurries of abrasive materials flow through the system. Even though the bead will finally wear away and turbulence decreases, the final effect is a thinner wall cross-section in that location. In push joint pipe systems this turbulence can never be removed. In thermoplastic piping systems engineers recognize the efficiency and advantages of having the internal weld bead removed from a system compared to a system that is not. Whether the issue is flow Reduction, or flow Restriction, or Stimulated Blockage, or Biofilm/Bacteria entrapment or Turbulence Wear. The concept of bead removal is an advancement in the thermoplastic piping industry that needs to be utilized, if for no other reason than higher efficiency.