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  3. 辰己屋金属 大阪本社、東京営業所、京田辺工場、中部営業所、東大阪パイプ工場
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辰己屋金属 大阪本社、東京営業所、京田辺工場、中部営業所、東大阪パイプ工場

EstablishmentFebruary 1935
capital1000Ten thousand
number of employees73
addressOsaka/Higashiosaka-shi/1-8-20 Nishi-Tsukamoto-dori, Nishi-ku
phone06-6789-5831
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last updated:Feb 10, 2025
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  • Products/Services(33)
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辰己屋金属 Company Profile

Pipe bending, non-ferrous metal material sales, copper-aluminum clad materials, and precision machining are provided by Tatsumiya Metal! From material procurement to processing, we respond immediately to a wide range of needs with ultra-high speed.

<Metal Materials Trading Division> With a rich inventory and four slitting facilities, we supply materials nationwide from our Higashi-Osaka Coil Center. We specialize in the sale of copper alloy materials and non-ferrous metal materials. In addition to traditional copper alloy materials, we are actively promoting the next-generation copper-aluminum clad material "CCA" in collaboration with ACM (Applied Composite Material Corp.). <Metal Processing Division> We excel in processing small quantities of a wide variety of metal pipes. Our diverse techniques include coil winding, R-bending, various bending processes, and welding. We handle everything from one-off parts used in heat exchanger components and machinery to larger quantities for automotive, consumer, and residential applications. In the world of bending processing, where small lots are common, the presence or absence of molds becomes quite important. We propose a mix of our own molds and equipment, as well as those from partner factories. Additionally, our precision cutting processing using NC automatic lathes leverages the procurement advantages unique to Tatsumiya, which has a metal materials trading division, enhancing customer satisfaction through technical expertise, procurement power, and cost efficiency. With over 90 years of establishment as a processing trading company, we view the 100-year mark as a milestone and will continue to build a great company in the future.

Business Activities

Pipe processing (bending, brazing/welding, piping components, heat exchanger components) Precision cutting processing (mass production of difficult-to-cut materials such as SUS304, φ2–51) Sales of copper products, non-ferrous metal materials, and special alloys (copper, copper alloys, eco-brass, aluminum, stainless steel, titanium, high nickel alloys, etc.) Ceramic heaters (we provide ceramic heaters in collaboration with Kyocera) In metal material sales, we focus on non-ferrous metals (pure copper and phosphor bronze) and own four high-speed slitters, ensuring not only QCD but also flexibility in responding to small lot weights that other companies may hesitate to handle. Please feel free to contact us for any requests. Additionally, we have newly introduced slitting equipment capable of cutting thick materials, up to 3.5 mm in thickness, which is still rare in the non-ferrous sector. We are equipped to supply materials for press components that are evolving towards electrification, high current, and increased thickness. In the same field of non-ferrous metals and copper products, we propose a new technology: copper-aluminum clad material "CCA," which is a fully covered clad material with copper metallurgically bonded around an aluminum core, making it a feasible material for lightweighting and cost reduction in components using copper.

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Products/Services (33)

Copper-clad aluminum composite material "CCA" product image
Copper-clad aluminum composite material "CCA"
[Case Studies Available!] NC Cutting Processing by a Non-Ferrous Material Wholesaler product image
[Case Studies Available!] NC Cutting Processing by a Non-Ferrous Material Wholesaler
For stable procurement of copper materials. Tough pitch copper equivalent material, PTC. product image
For stable procurement of copper materials. Tough pitch copper equivalent material, PTC.
Antibacterial with the power of copper! Antibacterial mask case "MASK REST" product image
Antibacterial with the power of copper! Antibacterial mask case "MASK REST"

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catalog(26)

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Copper-clad aluminum composite material "CCA"

Copper-clad aluminum composite material "CCA"

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【Downloadable Stock List】Introduction of Copper, Brass, and Phosphor Bronze Hoop Materials in Stock

【Downloadable Stock List】Introduction of Copper, Brass, and Phosphor Bronze Hoop Materials in Stock

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Board thickness 0.1 to 3.5 mm - Information on slitting equipment

Board thickness 0.1 to 3.5 mm - Information on slitting equipment

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For stable procurement of copper materials. To address carbon neutrality. Introduction of PTC (Tough Pitch Copper Equivalent Material).

For stable procurement of copper materials. To address carbon neutrality. Introduction of PTC (Tough Pitch Copper Equivalent Material).

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Detailed information

Company name 辰己屋金属 大阪本社、東京営業所、京田辺工場、中部営業所、東大阪パイプ工場
number of employees73
Contact addresspostalcode 577-0046 Osaka/ Higashiosaka-shi/ 1-8-20 Nishi-Tsukamoto-dori, Nishi-kuView on map TEL:06-6789-5831 FAX:06-6789-5838
Key PartnersMitsui Sumitomo Metal Mining Co., Ltd. Mitsubishi Materials Corporation Applied Composite Material Corp. Oki Copper Industry Co., Ltd. San-Etsu Metal Co., Ltd. Nihon Shindou Co., Ltd. Toyoyama Japan Co., Ltd. Kyocera Corporation Harada Shindou Co., Ltd. Seihou Metal Industry Co., Ltd. Mori Industry Co., Ltd. Katagi Aluminum Manufacturing Co., Ltd. JX Metals Corporation Daido Steel Co., Ltd. UACJ Group Others
Multiple suppliers for material procurement and various processing subcontractors.
Industry Trading company/Wholesale
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