Alloy-clad Wear Pipe

Trimay® Products is a division of Trimay?that alloy clads the inside diameters of steel pipe using an FCAW process. It was established in 2005 for the sole purpose of researching and developing an optimal welding process to apply innershield flux wires on the insides of pipe for hydrotransport applications. By 2009, the pipe division had accomplished its goal of finding an optimal welding process for transitions and straight pipe, plus the researching team developed and patented a machine specifically for inlaying/overlaying 90 degree pipe bends. What Trimay® Pipe Products has succeeded in creating are alloy clad pipe products manufactured especially to minify elongation and pipe distortion (shrinkage) while maintaining a strong bond between the overlain flux wires and substrate material.

Key Benefits

  • Quicker installation...due to flush-fitting joints and unconventional connection methods.
  • Longer wear life...due to high quality alloy/inlay types
  • Consistent quality...due to optimal welding application.

  • T171 Slick Line-Male Joint

    T171 Slick Line-Female Joint

    T171 Slick Line-Male Joint

    Trimay’s overlay - selection process is test-intensive. For custom products, Trimay® works closely with clients in determining the appropriate testing to select and monitor overlay production. For this T171 slick line, testing type was targeted toward toughness of the base material, and, like usual, 10% of overlay production was sampled and tested.Ultimately, this first T171 slick line demonstrates Trimay’s superior alloy selection and application processes, the secret of which lay in

    Trimay’s patented FCAW equipment and high quality alloy selection. Threaded, wear – protected slick lines are now available because of Trimay’s ability to overlay the inside diameter of pipe or casing without compromising the integrity of the substrate material. Because of minimal elongation and ovality, we consider the T171 threaded slick line be a milestone for the underground mining industry.

    Slick-lines capable of lasting multiple times longer that can be installed via threaded couplings(and are more economical because of ease of installation and longevity of use), are the newest innovation from Trimay®.

    Inlay Type

    The pipe division offers three standard overlay types for cladding of pipe, elbows and transitions. They are chromium, tungsten and borocarbide-based chemistries.They are all applied using trimay's proprietary FCAW welding process that is viewable under protection of a Nonconfidentiality Agreement.

    Chromium T157

    T157 is an iron-based steel overlay wear solution with a unique proprietary chemical composition designed to withstand heavy wear environments that may be exposed to mild-moderate direct impact. This alloy typically (as-welded) contains 30% chromium carbides and is regarded as the top performing chrome-based alloy on the market. It has a smooth surface, like the T138 and T156, plus extra Chromium and Manganese gives T157 up to 30% more wear resistance than T156.

    Common Applications

    TI57 is the best wearing chromium carbide overlay offered and it performs best in heavy wear environments exposed to mild-moderate direct impact. T157 wears longer than Trimay's other chrome overlays (T138 and T156) and, in some cases, it is more practical than using complex or tungsten-based claddings (such as Trimay's T161 or T170) which sometimes overperform and outlast their purpose. T157-clad plate is often used for coal handling and conveying applications. As a pipe inlay, T157 is a good choice for hydrotransport of abrasive and corrosive slurries - so much so, that multiple Albertan oilsand companies have added Trimay to their 'prefferred vendors' lists. Contact us for the technical data sheet (TDS) including the typical as-welded chemistry of this alloy

    Tungsten T170

    T170 is Trimay's only 'true' tungsten overlay that is not considered complex. With a typical composition of 50% tungsten, it is at the top of Trimay's product list. It is a nickel-based steel overlay wear solution with a unique proprietary alloy composition designed to withstand heavy impact and severe wear environments. T170 is unrivaled in impact resistance (due to its high nickel chemistry) and, except in some turbulent slurry environments where T171 testing has excelled, wear resistance as well. We recommend only single layer cladding of T170, unless custom ordered with less than 50% tungsten content.

    Common Applications

    It is used in intense wear environments where other products fail, or in critical areas that must remain operational to avoid downtime. When used, it is always economical; however, in some cases the lighter, more-affordable T171 (released in 2010), developed by Trimay® Wearplate Ltd. using Nano Technology., is a viable option. Contact us for the technical data sheet (TDS) including the typical as-welded chemistry of this alloy.

    Borocarbide T171

    T171 - Plate and Pipe

    T171 is a patented iron based steel overlay with a near nanoscale (submicron) microstructure it was developed by Trimay® Wearplate Ltd using Nano Technology. It is the closest-performing alloy we have to tungsten.

    Despite its high hardness (68 - 71 HRc), it has good impact resistance. This is due to the refined complex borocarbide phases which are surrounded by ductile ferrite phases. The borocarbide phases are completely wetted by the matrix and prevent premature pull-out, delamination and crack nucleation. Their refined nature allows the reduction of stress concentration sites and the ductile matrix supplies effective crack blunting and bridging, resulting in the improved impact resistance. Contact us for the technical data sheet (TDS) including the typical as-welded chemistry and more.

    Wear Pipe Case Studies


    We constantly get positive feedback about the quality of our product... allow us to share it by writing down a few details and contact us with your testimonial or case study application. Below are case studies for Trimay's wear pipe. Please Sign up and Log in to access to our Case Study.

    Mining_CS_Oilsand Slurry
    Mining_CS_Uranium Slick Line