Why ROTOmax™ Roto-lined Products? “Zero corrosion rate”up to 300˚F.

In high volume process flow applications, requiring large diameter piping, designers have limited options for corrosion resistance. Compared to others, the ROTOmax™ range of plastic-lined pipe (up to 72”) and fittings is an economical choice in corrosive and erosion applications and helps to prevent scale build up.

Properly specified, plastic-lined pipe and fittings have a “ZERO corrosion rate”

Choice of THREE CHEMICAL RESISTANT LINERS from our most economical HDPE to performance/price balanced PP, to ETFE, which offers outstanding chemical resistance at a lower price point than most alloys.

100% of lining is performed in our North Carolina facility starting with raw plastic resin. Our liners are VERY THICK TO ALLOW THERMAL STABILITY, AND TO PROVIDE RESISTANCE AGAINST VACUUM.

ROTOmax™ by RESISTOFLEX® lining processes provide a liner that is MECHANICALLY LOCKED INTO THE HOUSING. The result is that metal pipe and plastic liner (with dissimilar rates of thermal contraction and expansion) act as ONE MONOLITHIC UNIT even during frequent thermocycling.

This is proven by successful steam-cold water thermal cycling testing required by ASTM F1545-15A STANDARD SPECIFICATION for Plastic-Lined Ferrous Metal Pipe, Fittings, and Flanges.

ROTOmax™ by RESISTOFLEX® has performed Taber abrasion testing per ASTM D3389-05 using identical test parameters to those published on a leading rubber lined piping manufacturer’s website. THE RESULTS INDICATE THAT ROTOMAX™ BY RESISTOFLEX® POLYPROPYLENE LINED PIPING WILL OUTPERFORM THE TOP-RATED RUBBER LINED PIPE PRODUCT BY A FACTOR OF FOUR. Based on this, along with the outstanding mechanical, chemical and thermal properties of polypropylene liners, users should see greatly enhanced service life in fine slurry services.

SMOOTH LINERS PREVENT BUILDUP OF SCALE AND BIOLOGICS, and the seamless construction prevents failures known to occur with fusion-welded, bonded lap and other joining methods.

ROTOmax™ Roto-lined Products have plastic-lined pipe and fittings
up to 161” that are flanged and ready to
install upon arrival at
the job site.

ROTOmax™ by RESISTOFLEX® can provide plastic-lined complex shapes, such as manifolds, elbows with process branches, ASME code and non-code pressure vessels and other custom construction, in a wide range of diameters UP TO 161”. Maximum diameter depends on the configuration.

LENGTHS UP TO 20 FT minimize flange connections, installation time, weight, and potential leak points.

CLASS 150 flanged pipe and fittings follow the pressure tables in ASME B16.5 AND ASME B16.47. CLASS 300 flanged pipe and fittings maximum pressure is lower than true Class 300 ratings due to the plastic-to-plastic seal between flanges. THE USE OF RETAINER RINGS ENABLES FULL CLASS 300 AND HIGHER-PRESSURE RATINGS.

All standard dimensions are based on weld neck flanges welded directly to buttweld fittings. Non-standard or special dimension components are readily available as well.