Provided is a pipe bend structure for reducing the load on the nozzle of a rotating device, including a pipe bend, a reinforcing rib and a reinforcing plate. The reinforcing plate is arranged on an outer surface of the pipe bend, and the reinforcing rib is arranged on an inner arc side of the outer surface of the pipe bend. In the structure, the arrangement of the reinforcing rib and the reinforcing plate on the pipe bend increases the strength of the pipe bend, so that the stress in the pipe bend resulting from a pipe connected thereto can be relieved, ensuring the stable and reliable operation of the rotating device.

Provided is a pipe bend structure for reducing the load on the nozzle of a rotating device, including a pipe bend, a reinforcing rib and a reinforcing plate. The reinforcing plate is arranged on an outer surface of the pipe bend, and the reinforcing rib is arranged on an inner arc side of the outer surface of the pipe bend. In the structure, the arrangement of the reinforcing rib and the reinforcing plate on the pipe bend increases the strength of the pipe bend, so that the stress in the pipe bend resulting from a pipe connected thereto can be relieved, ensuring the stable and reliable operation of the rotating device.

The present invention relates to a line element comprising a hooped tube provided at both ends thereof with two receptacles in which male and female end fittings made of high-strength steel are fastened. The invention also relates to a riser section comprising at least one auxiliary line element having such characteristics. Furthermore, the invention relates to a method for upgrading a riser pipe by replacing an auxiliary line element with a line element having such characteristics.

A reinforcing element for a structural profile, in particular for a round, oval or elliptical structural tube. The reinforcing element comprises: a fiber structure which has a hollow-cylindrical, helically wound mesh of fiber strands and forms an inner shell surface formed to receive the structural profile; and a matrix material into which the fiber strands are respectively embedded and which is formed to be shrinkable by heating so that the fiber structure can be fastened to the structural profile with the inner shell surface by heating the matrix material. Also provided are a structural arrangement with such a reinforcing element, an aircraft or spacecraft with such a structural arrangement, as well as a method for producing such a structural arrangement.

A coated metal pipe for use as an automotive fluid transport tube and including any of a single or double walled tubing formed into a circular cross sectional profile. An intermediate primer layer is applied over the tubing. A polyamide incorporating a graphene powder is further applied over the intermediate layer.

A coated metal pipe for use as an automotive fluid transport tube and including any of a single or double walled tubing formed into a circular cross sectional profile. An intermediate primer layer is applied over the tubing. A polyamide incorporating a graphene powder is further applied over the intermediate layer.

A loose lining structure based on a tantalum plate and a steel clad plate is disclosed, which includes a plate cladding base formed by the steel clad plate and the tantalum plate covered on the steel clad plate. The steel clad plate is formed by a steel layer and a cladding layer laid on the steel layer, a periphery of the tantalum plate is fixed with the cladding layer through welding, a medium circulation pipe and/or a reinforcement fastening are/is set on the plate cladding base, the medium circulation pipe includes a tantalum liner tube, the reinforcement fastening is a tantalum plug. Also, a manufacturing method of the loose lining structure based on the tantalum plate and the steel clad plate is disclosed, which includes steps of (S1) fixing through welding; (S2) processing installing holes; and (S3) installing components.

A loose lining structure based on a tantalum plate and a steel clad plate is disclosed, which includes a plate cladding base formed by the steel clad plate and the tantalum plate covered on the steel clad plate. The steel clad plate is formed by a steel layer and a cladding layer laid on the steel layer, a periphery of the tantalum plate is fixed with the cladding layer through welding, a medium circulation pipe and/or a reinforcement fastening are/is set on the plate cladding base, the medium circulation pipe includes a tantalum liner tube, the reinforcement fastening is a tantalum plug. Also, a manufacturing method of the loose lining structure based on the tantalum plate and the steel clad plate is disclosed, which includes steps of (S1) fixing through welding; (S2) processing installing holes; and (S3) installing components.

A coated metal pipe for use as an automotive fluid transport tube and including any of a single or double walled tubing formed into a circular cross sectional profile. An intermediate primer layer is applied over the tubing. A polyamide incorporating a graphene powder is further applied over the intermediate layer.

A subsea pipeline coated with a thermally insulating coating has a radially outer surface shaped to define external hold-back formations. In a J-lay operation, the weight load of a pipeline catenary is held back using a complementary bushing or clamp of an installation vessel engaged with the hold-back formations. The weight load is transferred from the catenary to the bushing or clamp by shear forces acting through the coating. The coating extends continuously along the pipe and is interposed between the hold-back formations and the underlying pipe. The hold-back formations may be integral with the coating.