A tubular body includes a fiber-reinforced resin layer including a prepreg sheet, which is made of fiber-reinforced resin, wound into a tubular shape and cured. The prepreg sheet includes an edge that is located at an end in a direction in which the prepreg sheet is wound. The fiber-reinforced resin layer includes a joining portion where the edge of the prepreg sheet is joined to the prepreg sheet. The joining portion extends helically over a single winding or more around the axis of the tubular body.

A tubular body includes a fiber-reinforced resin layer including a prepreg sheet, which is made of fiber-reinforced resin, wound into a tubular shape and cured. The prepreg sheet includes an edge that is located at an end in a direction in which the prepreg sheet is wound. The fiber-reinforced resin layer includes a joining portion where the edge of the prepreg sheet is joined to the prepreg sheet. The joining portion extends helically over a single winding or more around the axis of the tubular body.

A limb for a breathing circuit manufactured from very thin walled polymer materials has an elongate axial reinforcing spine lying freely inside the conduit and fixed to each end connector. The spine is laterally compliant but axially stiff. The spine provides resistance to tensile and compressive loads on the conduit, including that induced by prevailing internal pressures.

A limb for a breathing circuit manufactured from very thin walled polymer materials has an elongate axial reinforcing spine lying freely inside the conduit and fixed to each end connector. The spine is laterally compliant but axially stiff. The spine provides resistance to tensile and compressive loads on the conduit, including that induced by prevailing internal pressures.

A flanged ring connector (50) for connecting adjacent ends of HVAC ducting (52) includes an insertion flange portion to engage within the interior of the ducting. A mating flange portion (56) extends laterally or transversely to the insertion flange portion (54). A seat (58) is formed along the mating flange portion (56) to receive and retain a seal (60) and/or a reinforcing member or bead (90).

Electric resistance welded steel pipe securing the high strength and high toughness demanded from oil well pipe in recent years. The metal structure in a region having a width of 0.5 mm in both the thickness directions from a reference point, when using a point defined as a point of the thickness in the thickness direction from the surface in the base material part of the steel as the reference point, consists of polygonal ferrite: 10 area % or less and a balance: bainitic ferrite. The thickness is 15 mm or more.

Electric resistance welded steel pipe securing the high strength and high toughness demanded from oil well pipe in recent years. The metal structure in a region having a width of 0.5 mm in both the thickness directions from a reference point, when using a point defined as a point of the thickness in the thickness direction from the surface in the base material part of the steel as the reference point, consists of polygonal ferrite: 10 area % or less and a balance: bainitic ferrite. The thickness is 15 mm or more.

An exhaust air channel arrangement for a kitchen exhaust air channel system is provided in which the exhaust air channel arrangement is composed of a sheet metal pipe and a supporting structure, which is movably received within the sheet metal pipe along the longitudinal direction (x) of the sheet metal pipe, wherein both opposed wall portions of the sheet metal pipe are mutually supported by the supporting structure.

An exhaust air channel arrangement for a kitchen exhaust air channel system is provided in which the exhaust air channel arrangement is composed of a sheet metal pipe and a supporting structure, which is movably received within the sheet metal pipe along the longitudinal direction (x) of the sheet metal pipe, wherein both opposed wall portions of the sheet metal pipe are mutually supported by the supporting structure.

A thermoplastic product includes a fabric-based reinforcing sheet and a polymerized thermoplastic material. The fabric-based reinforcing sheet is wound about a mandrel to form a plurality of layers having a cross-sectional shape that corresponds to the mandrel. The fabric-based reinforcing sheet includes a plurality of fiber bundles, which may have a bidirectional orientation or configuration. A polymerized thermoplastic material is disposed within each layer of the fabric-based reinforcing sheet. The polymerized thermoplastic material bonds each layer of the fabric-based reinforcing sheet to an adjacent layer.