Cost reduction is possible due to improvements in operational efficiency!
Compared to welding construction with direct attachment of pipes and flanges, using a stub end incurs higher component costs. However, during on-site installation, it does not require positioning or alignment of bolt holes, making the construction easier and ultimately leading to cost reduction when considered as a whole. At Benkan Kiko, we stock four types of 10k type with materials SUS304, SUS304L, SUS316, and SUS316L. Please feel free to contact us for estimates or inquiries.
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basic information
The product I would like to introduce this time is a stainless steel stub end (lap joint) for piping. A stub end (lap joint) is a pipe fitting that has a flange at the end and is used in combination with a loose flange. (Hereafter referred to as a stub end.) The general method of using a stub end is to combine it with a loose flange. When connected, since the steel pipe and flange are not directly welded, the loose flange can rotate freely. Therefore, when attaching to the opposing flange with bolts and nuts, it is possible to adjust the position of the bolt holes of the loose flange freely by rotating only the loose flange without rotating the piping itself in the axial direction.
Price range
Delivery Time
Applications/Examples of results
Paper plant (raw materials and water supply) Chemical plant (chemicals and raw materials) Shipbuilding plant low-temperature piping (LNG and chemical tankers) Building facilities (sanitary piping and fire protection piping) Power plant (nuclear and biomass)
Detailed information
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LAP piping components include pipes with welded stub ends, flanges, gaskets, and bolts.
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LAP welding A stub end is welded to the pipe.
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Flange installation We will set the flange. If the flange cannot be inserted from the opposite side of the pipe, please insert the flange in advance before welding the stub end.
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LAP piping construction 1 Set the packing.
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LAP piping construction 2 Align and insert bolts into the bolt holes of the flange.
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LAP piping construction 3 Tighten with bolts.
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LAP piping construction 4 is complete. When flanges are directly attached to pipes, it is necessary to adjust the positions of the bolt holes on both flanges before delivery to the site. However, by using a stub end and flange in this way, there is no need for prior adjustment, making on-site joining easy.
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Company information
From residential water supply and hot water piping to massive pipelines in large-scale plants, piping that supports daily life is spread all over the world. Benkan Kiko Co., Ltd. is involved in the manufacturing of welded pipe fittings, which are essential piping components. We provide optimal products tailored to the piping environment (design, usage conditions, etc.) and construction circumstances, 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.