Advantages of SuperLaminate™

The patent-pending PipeMedic SuperLaminate™ system is the latest technology for repair and strengthening of pipes. SuperLaminate™ is particularly beneficial for pipes that are subjected to very high internal pressures, such as those utilized in the water and gas industries. The system works equally well on all materials including steel, concrete, plastic and even wood pipes.  These FRP laminates are constructed with multiple layers of carbon and/or glass fabrics pressed together and processed through a specially-designed equipment that applies resin under pressure and heat to form a solid thin flexible laminate.  The laminates can be used to repair and strengthen deteriorated and/or corroded pipes in gas and water industries, as well as pipes in industrial facilities. As independent tests by the Gas Technology Institute (GTI) have demonstrated, even without the support of a host pipe, SuperLaminate™ can resist extremely high pressures. This feature makes SuperLaminate™ an ideal solution where, for example, in an industrial facility, the plant processing capacity is limited by the pressure rating of the pipes. Under such scenarios, lining the pipes with SuperLaminate™ will produce a significantly stronger pipe with virtually no loss of diameter, thereby increasing the plant's capacity.

The SuperLaminate™ system offers the following advantages compared to the CFRP wet layup method and other conventional materials and methods for repair of pipes:

  • 3-4 times stronger than steel
  • Fast repair & strengthening system
  • Material properties can be verified before the laminates are installed on the pipe surface
  • Available in carbon or glass
  • Works equally well on concrete, steel and wood pipes
  • One size fits all pipes (no delays for customized liners)
  • Makes possible to repair challenging projects where other products fail to perform

In the following, each of these advantages will be discussed in more detail.

Stronger than Steel

SuperLaminates are considerably stronger than steel and carbon FRP wet layup systems that are used for repair of pipes. Typical mild steel has a tensile strength of 36000 psi; on the other hand, SuperLaminates have tensile strength ranging from 60,000 to over 155,000 psi! 

Products Tensile Strength, psi (MPa) Modulus of Elasticity, ksi (GPa)
PipeMedic SuperLaminate™ PC40.2
156,000 (1,080)
13,800 (95.5)
PipeMedic SuperLaminate™ PC26.16
101,000 (698)
7,150 (49.3)
PipeMedic SuperLaminate™ PG16.15
62,000 (431)
3,500 (24.1)
Carbon FRP wet Layup*
100,000 (690)
10,000 (69)

*Values are typical for unidirectional carbon fabric and must be compared with PC40.2 only. Other wet layup systems similarly have strength and modulus values that are 25%-30% lower than their SuperLaminate™ counterparts.

Fast Repairs

Because SuperLaminates are manufactured in our plants, no time will be wasted in the field to mix the saturating resins and saturate the fabrics. All of the laminates can be designed and manufactured according to the project specifications before the shutdown and repairs begin! This feature of PipeMedic SuperLaminate™ makes the system ideal for applications where shutdown times are very short and delays could jeopardize the plant operation.  

Material Properties Known in Advance

When the wet layup system is used to repair pipelines, it is common to make witness panels or test coupons of the fabric everyday in the field; many specification, for example, call for at least one sample to be made for every 1000 square feet of fabric installed. These samples are typically cured on site and sent to a laboratory for testing at a future date. The strength of the wet layup systems relies heavily on the quality of the crew and each batch of resin that is mixed. Furthermore, the challenging work environment inside pipelines can easily result in large variations in quality of the final product that is installed in different sections along the pipe. Often times by the time the results of these tests become available the project is nearly completed. Remedial actions could delay the project significantly.

In contrast, because the PipeMedic SuperLaminate™ are manufactured in our plants, they can be constructed in advance and delivered to the job site well ahead of the starting date for the repairs. This gives the project owner and manager ample time to test samples of the laminates and become reassured the materials delivered meet or exceed the project specifications. The high standards of our ISO-9000 certified manufacturing facility makes it virtually impossible for defective laminates to be shipped to the job site.

Carbon or Glass Alternatives

SuperLaminatePipeMedic SuperLaminates are constructed with either carbon or glass fabrics.  The laminates can be customized to include multiple layers of unidirectional or biaxial fabrics based on the project design requirements. In repair of steel pipes, a layer of glass fabric must be installed first to serve as a barrier between the carbon fabric and steel pipe; this is needed to prevent galvanic corrosion of the pipe. In contrast, SuperLaminates can include a glass veil embedded within the laminate allowing the installation of the SuperLaminate™ directly on the surface of the steel pipes. This feature alone can save significant construction time in the field.

It is generally accepted that contact between carbon and steel must be prevented as this could result in galvanic corrosion. In practice this is achieved by applying a layer of glass fabric as a barrier over the steel and carbon fabric. In construction of PileMedic SuperLaminates a thin glass veil is included on both faces of carbon laminates. Therefore, all of our laminates can be directly applied to any pile whether made with steel or other materials.

Test Results

We invite you to review the comprehensive test results of SuperLaminate™ by the Gas Technology Institute that resulted in the approval of this product for repair of steel gas mains.