Abstract: Embodiments provide a method for forming a groove on a pile encapsulation jacket to form an interlocking joint on the pile encapsulation jacket. A spacer may be used to form the groove. First, a pile jacket laminate is formed on a mandrel surface. The pile jacket laminate may be partially cured to have a solid but sticky surface. The spacer may be placed on the pile jacket laminate. An additional layer of laminate may be formed on at least a portion of the pile jacket laminate and at least a portion of the spacer. The entire structure may be cured and the spacer may be removed. A groove is formed between the pile jacket laminate and the additional layer of laminate at a space previously occupied by the spacer. The groove has the same width as the portion of the spacer that was covered with the additional layer of laminate.

Abstract: Saddle tap assemblies comprising internal collars and external saddle taps are disclosed. A saddle tap assembly may include an external slip tap, internal tap collar, a duct section, and adhesive. The external slip tap and the internal tap collar may each have a flange. The flanges may be curved. The flange of the internal collar may have a sheared portion permitting the flange of the internal collar to pass through an opening in a section of duct. The installation of saddle tap assemblies according to embodiments of the present invention is more cost-effective and less time consuming than conventional methods. Moreover, the seals and bonds formed using embodiments of the present invention provide for several layers of chemical protection and structural stiffening wherever the saddle tap assemblies are located.

Abstract: Internal collars and external saddle taps can be used to install taps on a main duct in a manner that maintains duct section joint integrity. A saddle tap assembly may include an external slip tap, internal tap collar, a duct section, and adhesive. The external slip tap and the internal tap collar may each have a flange. The flanges may be curved. The flange of the internal collar may have a sheared portion permitting the flange of the internal collar to pass through an opening in a section of duct. The duct may have an opening with one or more notches. A method of installation can be more efficient and more cost-effective than prior solutions. An installation tool can be used for installing saddle tap assemblies while an adhesive cures.

Abstract: Saddle tap assemblies comprising internal collars and external saddle taps are disclosed. A saddle tap assembly may include an external slip tap, internal tap collar, a duct section, and adhesive. The external slip tap and the internal tap collar may each have a flange. The flanges may be curved. The flange of the internal collar may have a sheared portion permitting the flange of the internal collar to pass through an opening in a section of duct. The installation of saddle tap assemblies according to embodiments of the present invention is more cost-effective and less time consuming than conventional methods. Moreover, the seals and bonds formed using embodiments of the present invention provide for several layers of chemical protection and structural stiffening wherever the saddle tap assemblies are located.

Abstract: A method is disclosed. The method includes obtaining a tubular structure having a passageway and comprising a fiber reinforced plastic material, and then attaching a flange structure comprising an aperture coupled to the tubular structure using an attachment element.

Abstract: A method is disclosed. The method includes obtaining a tubular structure having a passageway and comprising a fiber reinforced plastic material, and then attaching a flange structure comprising an aperture coupled to the tubular structure using an attachment element.

Abstract: A flange assembly is disclosed. The assembly includes a tubular structure having a passageway and comprising a fiber reinforced plastic material, and a flange structure comprising an aperture coupled to the tubular structure using an attachment element.

Abstract: A method is disclosed. The method includes obtaining a tubular structure having a passageway and comprising a fiber reinforced plastic material, and then attaching a flange structure comprising an aperture coupled to the tubular structure using an attachment element.

Abstract: Tubular structures and methods for making tubular structures are disclosed. In one embodiment, the method for making a tubular structure includes modifying a surface of a structure. After modifying the surface, the structure is bonded to a metal layer, thereby forming a composite sheet. Then, the composite sheet is shaped into a tubular structure.

Abstract: A slip collar is disclosed. The slip collar comprises a tubular outer wall portion, a tubular inner wall portion, and an intermediate portion disposed between the tubular outer wall portion and the tubular inner wall portion. At least one of the tubular outer wall portion, the tubular wall inner portion, and the intermediate portion comprises a fiber reinforced plastic material.

Abstract: Tubular structures and methods for making tubular structures are disclosed. In one embodiment, the method for making a tubular structure includes modifying a surface of a structure. After modifying the surface, the structure is bonded to a metal layer, thereby forming a composite sheet. Then, the composite sheet is shaped into a tubular structure.

Abstract: A laminated inner wall of a dual wall fume duct for transporting corrosive vapors and gases, and a process for fabricating the wall. The innermost layer of the wall is made of a cured epoxy vinyl ester resin incorporating chopped carbonized carbon fibers. The electrically conductive fibers act to dissipate and neutralize electrostatic charges generated by triboelectric processes.