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Corrosive Water Pipelines

Internally lined carbon steel pipe with welded joints is the most cost-effective, structurally-sound, long-term solution to internal corrosion. Here’s how FlexSleeve™ compares to other common solutions:

Epoxy/Polyurethane Lining with FlexSleeve™ Welded Joints Epoxy Lining Using Robot to Line Welded Joints Cement Mortar Lined Pipe with Hand Patched Joints Bare Pipe & Joints
Consistent pinhole-free lining Yes. The joint is internally sealed from corrosion as soon as the weld is complete. Difficult to consistently achieve pinhole-free linings at joints using thin-film epoxy over jagged internal weld surfaces. Yes No protection from corrosion. Not a long-term solution.
Construction delays Once the weld is complete, that’s it. Construction crews can maintain their pace down the line similar to bare pipeline construction. Robots often cause delays to construction crews while waiting for the joints to be internally lined. Painstakingly slow and laborious to transport, handle, and construct. N/A. The joint nor rest of pipe is protected from internal corrosion.
30+ year lifespan Yes. FlexSleeve allows for the use of ANY internal lining, including thick, flexible polyurethane linings that practically eliminate the possibility of a lining breach. The robot currently can only line joints with thin-film epoxy, which is difficult to consistently remain pinhole-free over jagged welds for decades. Yes No. Water pipelines without protection from internal corrosion are generally not designed to last for more than 15 years.
Corrosion Allowance / Extra Pipe Wall Thickness No  No Extra pipe wall thickness required for partial-penetration welded joints (when gaskets are used in lieu of manual internal patching). Yes, additional cost for thicker pipe wall, and more welding, handling, freight

Abrasive Slurry High Pressure Pipelines

Tailings, sand, and run of mine are highly abrasive. Transporting these slurries long-distance by pipeline is now much more cost-effective with the use of Joint Lock Ring™ welded joints and premium abrasion resistant pipe linings such as polyurethane or rubber.

Polyurethane or Rubber Lining with Joint Lock Ring™ Welded Joints High-Density Polyethylene (HDPE) Liner Bare Pipe Polyurethane or Rubber Lining with Flange Joints
CCapEx Over 20 Yrs Far lower CapEx than flanged joints. Far longer lifespan than HDPE or bare steel. Lower CapEx, but short lifespan in heavy abrasion will require liner or pipeline replacement. High CapEx construction costs. Short lifespan in heavy abrasion will require pipeline replacement. Far higher CapEx than Joint Lock Ring Welded Joints.
Abrasion Resistance Excellent Poor/Medium Poor  Excellent
 Lifespan Longer  Shorter  Shorter Longer

Concentrate Pipelines

Concentrate pipelines are a critical asset to remote mine sites, as they are often the only means of sending ore to ports and other facilities where the concentrate can be shipped for processing.  Historically, when internal corrosion protection is desired HDPE liners are pulled through long sections of pipe. LPS’ welded joint system now permits polyurethane-lined pipe to be constructed with full penetration welded joints, thus offering the following advantages:

Polyurethane/Rubber Lining with Joint Lock Ring™  Welded Joints HDPE Pull-thru Liner with Flanged Joints Bare Pipe with Welded Joints
Long-term Corrosion Protection Yes Yes No corrosion protection. If corrosive liquids are present this is not a long-term option.
Mechanical Joints Joint Lock Ring system replaces need for mechanical joints Yes, flanges required every 500 – 1,000 meters n/a
Lining Adhesion to Pipe Excellent adhesion to steel Not adhered to steel. Liner can collapse from vacuum, wear, age, etc. n/a
Pigging  No risk of pigs stressing or disbonding polyurethane lining. Risk of pigs stressing liner or getting stuck. Not recommended to pig pipelines that have HDPE liners. Yes
Integrity Management Intelligent pigs can provide valuable information on pipe wall thickness and lining conditions. Without intelligent pigging, pipeline operators have limited information to assess pipe conditions. Intelligent pigs can assess extent of metal loss from wear and corrosion.
 Pipeline Repairs Limited to area of damaged pipeline section (12 to 48 meters) minimizing impacts to landowners and communities. Repairs are simpler and faster than the HDPE liner. More complicated and time-consuming as the repair involves removing and replacing a complete liner section ranging from 400 – 1,200 meters. Requires mobilization of both a pipeline repair crew and HDPE liner contractor with large laydown area. Limited to the area of the damaged pipeline section, minimizing impacts to landowners and communities.