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Latest update: 30/11/2016 18:00:21

Macrw Co., Ltd.

We conduct independent R&D of cold drawing of magnesium alloy pipes. 

We provide manufacturing services such as cold drawing, bending, and welding of magnesium alloy pipes and wires. We uniquely developed and achieved mass production of magnesium alloy pipes and wires using cold drawing, which was said to be impossible to realize. This was done by applying our cold drawing technology to difficult-to-process pipes made of high-tensile materials. Our unique procurement route with a wide range of suppliers ensures we can achieve our purchase demand for magnesium alloy materials. We have ample experience in product development for nursing care equipment that makes the most of lightweight magnesium alloy. 

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Other presentation

[Company strength]
(1) Cold drawing pipe processing technology for difficult-to-process magnesium alloy material
We realized cold drawing for magnesium alloy pipes, which had been said to be impossible due to its crystal structure. This was possible because of our accumulation of technology, which we have gained through over 30 years of experience in the steel pipe business.
(2) Integrated system for processing services including secondary processing such as bending pipes
Processing examples include welding, bending, metal spinning, squeezing, ring molding, etc.
Product examples include welding rods, and welding wires (drawing product).
Examples of commissioned processing work include wheelchairs, guide dog harnesses, canes, chairs, etc.
(3) We can provide our services with short lead times, for small quantity orders, and with multiple materials.
Inquiries for orders of single pipes or single 10 m-long wires are welcome at our online retail store.
We can apply the technologies we acquired through magnesium alloy development to various materials (iron, stainless steel, aluminum, titanium, copper, etc.).

[Business description]
We manufacture and sell magnesium alloy pipes and wires based on our cold drawing technology. We also custom-make nursing care equipment such as walking canes and wheelchairs that make the most of lightweight magnesium alloy. We cover secondary processing including bending, cutting, and welding for magnesium ally pipes. We strive to offer customers useful proposals through our continuous development. Our aim is to use our cold drawing technology to further reduce the weight of the parts used in automobiles and other transportation vehicles with high precision and strength.
We have opened an online store for orders of small amounts of magnesium welding materials and other products. The minimum order is 300 yen per 10 meters for welding wire. We also have a convenient Magnesium Welding Trial Kit set, which contains pipes and welding materials.
Our company’s website is at

Nonferrous metal manufacturing

[Strength of products/technologies]
Our unique technology is cold drawing pipe processing for magnesium alloy. 
Features of cold drawing pipe processing as follows: 
Tensile strength: Improvement over 30%.
Dimensional accuracy: Within +/– 0.02 mm.
Surface quality: Ra 0.1 or less.
Advantages of cold drawing pipe processing include the following:
 Automatic processing becomes possible (for better check accuracy).
 Improved processing efficiency (minimized cutting allowance).
 Dimensions can be specified in 0.1-mm units.

[Representative's message]
This company was founded in 2010. We started doing business in 2013 after two years of technical development. Our goal in starting this business was to realize the widespread use of magnesium alloy as a material for products requiring light weight, such as nursing care equipment. Our core technology is cold drawing pipe processing for magnesium alloy. We independently developed this technology by applying the technologies we gained by processing difficult-to-process high-tensile materials. We have been devoting ourselves to expanding our business to different industries so that there are more applications of our technologies to many different products. We have mainly targeted entering the European market.

[Company structure for market development/overseas expansion]
Our managing director of sales is in charge of our dealings with major companies and overseas business expansion. The CEO will respond to technical inquiries and solve problems by directly visiting customers as necessary.

[Awards and media coverage]
[Awards] Kokuyo Furniture ofon, Best Origin of Company Name Contest, winner (2013).
Shizuoka Bank, most excellent company for “Shizugin Entrepreneurship” (2014).
Bank of Tokyo-Mitsubishi UFJ, excellent company for “Rise Up Festa” award (2014).

[Media] The Nikkei Shimbun, The Shizuoka Shimbun, The Chunichi Shimbun, The Mid-Japan Economist, Japan Metal Daily, and The Kinzoku Sangyo Shimbun.
World Business Satellite (TV Tokyo), Genki! Shizuoka-jin (SBS TV).

[Joint research and development]
Shibaura Institute of Technology (making and evaluation of magnesium alloy pipes, 2013).

[Main Clients / Business History (domestic)]
Foundation for Yokohama Rehabilitation Services, Tokyo Institute of Technology, University of Yamanashi, and other major manufacturing companies (joint development).

[Main Clients / Business History (overseas)]
Magnesium alloy materials companies in Europe and China (since 2013).

[Exhibition History/Information]
International Home Care and Rehabilitation Exhibition: October 1 to October 3, 2014 (Tokyo Big Sight).
International Magnesium Exhibition: October 15 to October 17, 2014 (Tokyo Big Sight).
Tokyo International Industry Exhibition: November 19 to November 21, 2014 (Tokyo Big Sight).
IFFT/Interior Lifestyle Living: November 26 to November 28, 2014 (Tokyo Big Sight).

This company is recommended by the following support organizations.

Kanto Head Office, SMRJ

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