It is something that is indispensable for gas pipelines.
The pipeline has not only straight sections but also bends and branching parts. The guide plate that allows the pig to pass smoothly through the branching section without getting caught on the branch side is called a guide bar (pig bar). At Benkan Kiko, we manufacture elbows used in the bending parts of pipelines and T (tee) fittings used in branching parts, but the T fitting with a bar attached to the branching part is referred to as a T fitting with a guide bar. Regarding the guide bar, there are various know-how related to its shape and installation method, and welding to the T fitting body often needs to be performed using a welding method (welding construction method) approved based on regulations such as the Gas Business Act. Benkan Kiko has obtained many welding construction methods based on regulatory requirements such as the Gas Business Act and the Electric Utility Act, allowing us to respond to various cases. In addition to being able to accommodate various shapes of guide bar installations according to customer requests, we can also procure the materials for the guide bars ourselves. Furthermore, we are qualified to conduct various tests and inspections on the welding parts of the guide bars. Source of pig photo: JFE Engineering Corporation.
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basic information
One of the essential elements in our lives is "city gas." The pipes used for transporting and distributing city gas are called "conductors," and they are categorized into main pipes, supply pipes, and internal pipes based on their installation locations. Additionally, they are broadly classified into high-pressure pipes, medium-pressure pipes, and low-pressure pipes according to the pressure of the gas flowing within them. In areas where city gas is utilized, these conductors (main pipes) are spread out like blood vessels, and gas is delivered to each household through further branched pipes (capillaries). Main pipes are generally buried underground, and over many years of use, issues such as corrosion, deformation, and positional shifts due to ground subsidence can occur, making regular inspections necessary to keep these conductors (blood vessels) in good condition. To conduct these inspections, there is a device called an "inspection pig." This device has a piston-like shape and consists of multiple connected units that perform functions such as cleaning, corrosion inspection, and position detection while moving through the piping. There are also pigs designed to confirm the passage of the inspection pig, making it a very deep and fascinating technology.
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It is used in the gas pipelines of various gas companies.
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Company information
From residential water supply and hot water piping to massive pipelines in large-scale plants, piping that supports our daily lives is spread throughout the world. Benkan Kiko Co., Ltd. is involved in the manufacturing of welded pipe fittings, which are essential components of this piping. We provide optimal products tailored to the piping environment (design and usage conditions, etc.) and construction situations, not only for general building water supply and hot water piping but also for power plants, gas plants, refineries, oil and chemical plants, shipbuilding, and more, where strict quality standards are required.