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580 Goddard Ave <br />3 8 <br />FM',A E C I O N InsituformInsituformChesterfield, 005 <br />(636) 50 000 <br />Stronger. Safer. Infrastructure.' Tirlr�rr lrj�Irc.., L1.( www•aegion.com <br />February 14, 2024 <br />To Whom It May Concern: <br />This letter certifies that INSITUFORM tubes are manufactured in Batesville, Mississippi, USA by Insituform <br />Technologies, LLC and meet all relevant specifications for a cured -in -place pipe product: ASTM D5813, <br />ASTM F1216, and ASTM F1743. Insituform tubes have been manufactured in the USA since 1981. <br />The finished tube is manufactured using multiple layers of polyester felt, with one layer coated with either <br />a Polypropylene or Polyurethane thermoplastic. The layers are cut/slit to a desired width and sewn <br />concentrically to form the final tube. The coated layer is also sealed at the seam, using an extrusion or <br />taping process. The extrusion process is used on the standard (inverted) tubes. The standard (inverted) <br />tubes are manufactured with the coated layer on the outside. <br />Felt production is achieved by a non -woven needle punch process using Polyester fiber. The finished <br />product is tested for thickness under a specified load and for tensile strength in accordance with ASTM <br />D5813. The fabric tube has a minimum tensile strength of 750 psi (5 MPa) in both the longitudinal and the <br />transverse direction. The seam strength of the tube is also tested on a regular basis and meets or exceeds <br />the minimum tensile strength of 750 psi (5 MPa) in both the longitudinal and transverse direction. For <br />Quality Assurance purposes, the material is also tested for weight and thickness. <br />All standard (inverted) tubes are run through a dye bath prior to shipment to ensure there are no leaks. <br />Following the inspection process all tubes (except InsituMain, which are used in water lines) are printed <br />with yard marks. <br />All tubes with tapers, transitions, or any change in tube diameter or thickness are produced under the <br />same specifications, with the same materials, and meet the same material testing requirements as the <br />standard tube. <br />The quality system used by Insituform Technologies, LLC is ISO 9001:2015 certified. <br />The end use of the Insituform tube is to rehabilitate pipes to extend the life of the existing pipe and/or <br />prevent a replacement of the existing pipe. <br />Please contact us directly with any questions you may have. <br />INSITUFORM TECHNOLOGIES, LLC <br />%k-V\ � JOA_ <br />Amber Wagner, PE, PhD <br />Director of Engineering and Product Commercialization <br />3 1 P a g e <br />Aegion is the parent company of Aegion Coating Services, AIISafe Services, P2S ServTech, Brinderson, Corrpro Companies, Insituform Technologies, <br />MTC, Schultz, and Underground Solutions <br />