It is possible to reduce transportation and construction costs through compactification!
The 3DR elbow is a type of pipe fitting that is commonly used in gas pipelines. It is often manufactured using high-frequency bending, but due to the manufacturing process, an extra length of 1OD (1 outer diameter) is required as a gripping area. However, having this extra length makes it cumbersome during transportation. Additionally, in the case of underground installation, the extra length necessitates deeper excavation during construction, which increases labor costs, including handling. Since many products are used for mainline applications, the impact on costs is considered significant. However, if manufactured using the mandrel method, the absence of extra length improves loading efficiency onto trucks and eliminates the need for deeper excavation during underground installation of the pipeline, making construction easier. Furthermore, the wall thickness of the bend is almost uniform, and the entire elbow undergoes heat treatment, resulting in consistent mechanical properties and high quality, with no discontinuities in wall thickness, making it safe for use in high-pressure conduit mainlines. At Benkan Kiko, we offer 3DR elbows manufactured using the mandrel bending method. We can provide cost-benefit calculations, so please feel free to consult with us.
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basic information
The product lineup is as follows: 1. API 5LX60 500A x 90° 45° 30° 22.5° 11.25° 3DR mandrel elbow (bend radius = 1524mm) 2. API 5LX60 400A x 90° 45° 30° 22.5° 11.25° 3DR mandrel elbow (bend radius = 1219.2mm) We will handle material procurement, so material supply is not necessary. Additionally, other materials can also be manufactured.
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Applications/Examples of results
It has been adopted for the bending sections of high-pressure main pipelines in large-scale domestic natural gas pipeline projects (long-distance pipelines), and contractors have praised it, saying, "It's easier to work with compared to conventional construction!" and "The quality is good and reliable." We have also received similarly high evaluations from gas companies.
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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.