The standard for driving piles! Achieving both labor cost reduction and safety on site simultaneously.
【Rich Track Record】 Sales have surpassed 10 million units! Used in many iconic locations in Japan, including the Tōkaidō Shinkansen, Mount Fuji, and Meiji Shrine. 【Difficult to Remove and Safe】 The Kui Maru has been confirmed to have excellent support strength through joint research with universities. 【Quick Installation】 It can be directly driven into asphalt, which helps shorten the construction period. Additionally, installation does not require qualifications and can accommodate various equipment from manual driving to pile drivers. 【Reusable】 The Kui Maru features a unique double-end sealed structure that has won a Good Design Award, allowing removed piles to be reused multiple times. This not only saves costs but also contributes to CO2 emission reduction. 【Rust-Resistant Galvanized Products Available】 We offer a lineup of rust-resistant hot-dip galvanized single pipes (only in 48.6mm diameter). 【Choice of Thickness and Length】 In addition to the most popular single pipe size (48.6mm), we offer seven thickness options: 27.2/31.8/34.0/38.1/42.7/48.6/60.5mm. Lengths can be selected in increments of 10cm, from a minimum of 0.3m to a maximum of 4m. 【Completely Domestic Production System】 The Kui Maru is made in Japan, from materials to manufacturing, ensuring peace of mind.
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basic information
Product Name: Kui Maru (Steel Pile, Driven Pile, Round Pile, Iron Pile) 【Size Lineup】 Diameter: 7 types of 27.2/31.8/34.0/38.1/42.7/48.6/60.5mm Length: Available in increments of 10cm from 300L (approximately 0.3m) to 4000L (approximately 4m) (Note: The minimum length that can be manufactured varies depending on the diameter. Please inquire for details.) Weight: 0.4 to 13.2kg (Example: 48.6×1100L is approximately 3kg) Kui Maru can be selected based on "diameter" and "length." The most popular size is 48.6mm, which is the same as the standard pipe at home improvement stores. We have most lengths up to 2m available in stock. Please inquire for more details. 【Shipping Unit】 We will ship in the quantity you require, starting from one piece. 【Body Thickness and Material】 27.2mm: t1.9mm STK-400 31.8mm: t1.6mm STK-400 34.0mm: t2.3mm STK-400 38.1mm: t2.3mm STK-400 42.7mm: t2.4mm STK-500 48.6mm: t2.4mm STK-500 60.5mm: t2.3mm STK-400
Price information
The price is open. If you would like a design price list, please feel free to contact us.
Price range
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Delivery Time
P1
※In-stock items will be shipped on the same day at the earliest (shipped from Utsunomiya and Nara, please consult us regarding payment methods, etc.).
Applications/Examples of results
Kui Maru was recognized for its design that achieves excellent functionality and won the Good Design Award in 2022. 【Main Uses】 Retaining walls, temporary construction enclosures, fences, solar power, railway construction, slope work, events, exteriors, electrical work, signage, agriculture, etc. 【Main Construction Examples】*Titles omitted Tōkaidō Shinkansen: Rail standard piles Mount Fuji: Fall prevention fence (9th station), animal prevention fence (5th station) Chubu Centrair International Airport: Temporary stairs, fall prevention fence (for events) Kansai International Airport: Site office anti-tipping measures Shinano Railway: Inter-pole Self-Defense Forces: For training Meiji Shrine: No entry fence Nikkō Tōshō-gū: Temporary scaffolding foundation Mega solar: Frame foundation, cable rack foundation, fences, etc. National Yoyogi Stadium: Planting no-entry fence Ueno Shinobazu Pond: Planting no-entry fence Agricultural greenhouses: Foundation Ministry of Land, Infrastructure, Transport and Tourism Tone River Flood Prevention Drill: Retaining wall construction drill Ebetsu City Fire Department: For rescue use *For more details, please download the PDF or feel free to contact us.
catalog（2）
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CAD data（7）
| Model number | overview | File |
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| Kuwamaru (Thickness 27.2) | This diagram is a schematic. Please extend or retract the main body to your desired length for use. |
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| Kuwamaru (thickness 31.8mm) | This diagram is a schematic. Please extend or retract the main body to your desired length for use. |
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| Kui Maru (Thickness 34.0) | This diagram is a schematic. Please extend or retract the main body to your desired length for use. |
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| Kuwamaru (thickness 38.1mm) | This diagram is a schematic. Please extend or retract the main body to your desired length for use. |
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| Kui Maru (Diameter 42.7mm) | This diagram is a schematic. Please extend or retract the main body to your desired length for use. |
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| Kuwamaru (Thickness 48.6mm) | This diagram is a schematic. Please extend or retract the main body to your desired length for use. |
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| Kuwamaru (thickness 60.5mm) | This diagram is a schematic. Please extend or retract the main body to your desired length for use. |
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Company information
Kuwimaru Co., Ltd. is a company with a 50-year history engaged in the manufacturing and sales of its main product, "Kuwimaru." Kuwimaru has a cumulative shipment record of 10 million units and is highly regarded as a domestic pile manufacturer. 【Awards and Certifications】 2022 Good Design Award 1st Nara Prefecture Business Award - Excellence Award ISO 14001:2015 Certification (Nara Factory, Manufacturing of Kuwimaru) ISO 9001:2015 Certification (Nara Factory, Manufacturing of Kuwimaru) Management Innovation Law Certification (2004, 2009) 【Affiliated Organizations】 Japan Temporary Construction Association Japan Light Temporary Lease Association 【Unified Qualification Number for All Ministries (Years 4, 5, 6 of Reiwa)】 0000183082