For large-diameter seamless steel pipe fittings made of fire STPA28 material, leave it to Benkan Kiko. We have a wealth of delivery experience!
We supply a large number of large-diameter seamless steel pipe joints made of materials specified for power generation thermal power generation equipment. Material: Fire STPA28 *For overseas: SA234WP91, SA234WP92 We have a significant track record of deliveries to power plants both domestically and internationally. Please feel free to consult or inquire with us. Project Sales Department, East Japan Sales Section (03-3777-1521) Project Sales Department, West Japan Sales Section (06-6482-1851)
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basic information
In addition to the large-diameter steel pipe joints specified for the above-mentioned thermal power generation facilities, we can also accommodate seamless options for other power plants. Reheat steam pipes and turbine bypass pipes used in power plants are large-diameter (609.6 to 1016 mm) and have thin walls (approximately 20 to 40 mm). Traditionally, joints manufactured using a method called monaka, which involves shaping steel plates and welding them together, have been widely adopted. However, this requires regular inspections to evaluate the integrity of the longitudinal welds, which has been a factor in reducing operational efficiency. As a result, there is an increasing demand for seamless steel pipe joints that do not have longitudinal welds. Manufacturing large-diameter joints with thin walls is highly challenging due to the method of production, but at Benkan Kiko, we have achieved the production of large-diameter joints that meet customer specifications through our long-standing experience and skills in joint manufacturing. If you are considering switching from traditional welded assembly or forged joints to seamless steel pipe joints for the sake of simplifying maintenance inspections and extending lifespan, please feel free to consult us. We are here to meet your needs.
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Applications/Examples of results
Example of delivery record for large-diameter steel pipe elbows - 20E(L) to 91E(L) Fire STPA28 700A X 35T - 30E(L) to 91E(L) Fire STPA28 950A X 50T - 30E(L) to 90E(L) Fire STPA28 1000A X 50T - 45E(L) to 90E(L) Fire STPA28 800A X 45T - 45E(L) to 90E(L) WPC 850A X 30T - 90E(L) WP12CL1 850A X 27T - N=50 90.05E(L)N KA-STPA28 1016.0 51.0T - N=50 30.98E(L)N KA-STPA28 1016.0 51.0T - 63.36E(L)N KA-STPA28 1066.8 82.4T (Note: N=50 indicates a 50mm neck) In addition to the above, we have many delivery records for domestic and international power plants.
Detailed information
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It is a 45° elbow with straight sections on both sides and finishing for compatibility with ultrasonic testing (UT).
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It is a 90° elbow with straight sections on both sides and finishing for compatibility with ultrasonic testing (UT).
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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.
