A plug for a pipeline includes a top portion defining a top bore, the top bore defining a top diameter; a bottom portion defining a bottom bore, the bottom bore defining a bottom diameter; and a web portion joining the top portion and the bottom portion; the top portion, the bottom portion, and the web portion defining a main bore, the main bore defining a longitudinal axis of the plug and defining a circular shape around the longitudinal axis of the plug; the top portion, the bottom portion, and the web portion further defining a substantially circular shape around a transverse axis of the plug that extends through the top portion and the bottom portion and is perpendicular to the longitudinal axis.

Provided is an end seal structure of a fuel rail for a gasoline direct injection engine that has a simple structure and allows an end cap part to meet higher pressure requirements in a fuel rail having the structure in which one end or both ends of a rail body composed of a tubular member, such as a pipe, is/are closed by an end cap or end caps. The end seal structure employs a thread fastening method using the end cap and a collar brazed at the opening end of the fuel rail body and a gasket sealing method as a sealing method, wherein a gasket interposed between the end cap and the fuel rail body is tightened by an axial force generated due to tightening of the end cap that is screwed and fastened to the fuel rail body so as to be sealed.

A tubular product includes a tubular body made of steel and having a tube wall which includes an opening. The opening is produced by a high-speed stamping process at a stamping speed of more than 4 m/s. The opening is situated in the tube wall in a region thereof which has a tensile strength Rm>800 MPa.

Provided is an end seal structure of a fuel rail for a gasoline direct injection engine that has a simple structure and allows an end cap part to meet higher pressure requirements in a fuel rail having the structure in which one end or both ends of a rail body composed of a tubular member, such as a pipe, is/are closed by an end cap or end caps. The end seal structure employs a thread fastening method using the end cap and a collar brazed at the opening end of the fuel rail body and a gasket sealing method as a sealing method, wherein a gasket interposed between the end cap and the fuel rail body is tightened by an axial force generated due to tightening of the end cap that is screwed and fastened to the fuel rail body so as to be sealed.

A pipe lining assembly and a method for plugging a pipe line utilizing a pipe lining assembly are provided. The pipe lining assembly includes an inflatable bladder having a first end and a second end defining a cylindrical body, and a patch folded in a hat like shape disposed over the first end of the bladder. When the bladder is inflated inside a pipe line, the patch unfolds and plugs the pipe line i.e. stops fluid from flowing through the closed portion of the pipe line.

A closet flange plug for sealing an opening of a closet flange and for being cut away by operation of a hole saw. The closet flange plug has an annular body portion for sealing the closet flange opening and a drill guide post concentrically disposed within the body portion. The drill guide post has a solid base portion of a material, such as polyvinyl chloride (PVC) thermoplastic, operative to bind in the hole saw drill bit. The annular body portion is adapted to be cut through by the hole saw. The drill guide post has an upper portion projecting above the annular body portion while the base portion projects below the annular body portion. A borehole concentrically disposed within the upper portion of the guide post has a portion sized to interfere with and be drilled into by the hole saw drill bit.