What Fuso Steel Pipe does

Fuso Steel Pipe Co., Ltd. (扶桑鋼管株式会社), founded July 11, 1968 and headquartered in Urayasu, Chiba, Japan, is a privately held industrial distributor and processor specializing in mechanical structural steel tubes and specialty steel tubes. The company maintains a constant inventory of 10,000 tons of carbon steel, alloy steel, and special steel seamless pipes (grades including STKM13A/C, S45CTK, SCM415–440TK series, SUJ-2, OST-2, STM-C/R) and operates four Urayasu warehouses plus processing centers in Kanto, Kansai (Osaka), Hokuriku (Komatsu), and Chubu (Tsu). Its core technology is in-house cutting, CNC turning, 5-axis compound machining, grinding (honing, cylindrical, internal), and 3-dimensional laser tube processing — including dual-end simultaneous machining and long-length shaft internal boring (up to ⌀200×L2000mm).

The company's business model combines wholesale distribution of steel tube material with value-added component processing as a one-stop service. Revenue is generated via three streams: (1) mechanical structural and specialty steel tube wholesale, contributing the largest share by handling volume; (2) component processing services (cutting, CNC machining, grinding, inspection) that add margin per part; and (3) international trading via group companies in Thailand (est. 2010), Indonesia (est. 2012), and China/Wuxi (est. 2018; relocated 2020), which also serve Japanese-affiliated manufacturers operating overseas with Japanese-quality JIT delivery. Pricing is per-order negotiated and not publicly disclosed. Annual handling volume reached ¥177 billion standalone and ¥220 billion at the group level in FY2024, against a claimed 30% domestic share of the mechanical structural steel tube market and approximately 900 corporate customers.

Fuso sells exclusively through direct B2B field sales, organized by function (materials procurement, component processing, civil/architectural materials, trade/specialty tubes, development) at headquarters and three domestic branches (Osaka, Nagoya, Hokuriku), supplemented by trade show presence at the Mechanical Components Technology Expo. Customer base spans construction machinery OEMs (Komatsu, Hitachi Construction Machinery, Sumitomo Construction Machinery, Caterpillar Japan, Kubota), machine tool manufacturers (Yamazaki Mazak, DMG MORI, Okuma), industrial automation firms (YASKAWA, THK, Daifuku), automotive/motorcycle suppliers (KYB, Astemo), and civil engineering contractors (Obayashi, YKK). The company is led by Group CEO Shinichi Emura (江村伸一) and President/COO Taro Akasaka (赤坂太郎), with 206 employees standalone and 425 consolidated group employees as of April 2025.

Name

Fuso Steel Pipe

Legal name

扶桑鋼管株式会社

Website

http://www.fusoh-kokan.co.jp/

Company type

Private

Founded year

1968

Operating status

Operating

Headcount range

101–250 employees

Short description

Fuso Steel Pipe (扶桑鋼管) is a privately held Japanese distributor and processor of mechanical structural steel tubes, operating a one-stop material-plus-machining service with 10,000 tons of constant inventory and a claimed 30% domestic market share, serving approximately 900 industrial OEM customers across construction machinery, machine tools, automotive, and civil engineering.

Ownership category

akta.pro rank

Product category

Mechanical Steel Tubes Distribution and Processing

NAICS

Iron and Steel Pipe and Tube Manufacturing from Purchased Steel (33121), Fabricated Pipe and Pipe Fitting Manufacturing (332996)

SIC

Steel Pipe & Tubes (3317), Metalworkg Machinery & Equipment (3540)

akta.pro primary industry

Pipe & Tube Manufacturing (Seamless & Welded OCTG/Line Pipe/Structural Tube) (IMAKABAI)

akta.pro secondary industries

Pipes & Tubing (Metal, Plastic & Composite) (IMADALAC), Industrial/Process Piping & Mechanical Contracting (IMAFALAG)

Keywords

• Mechanical steel tubes
• Steel pipe processing
• Industrial materials distribution
• Precision tube machining
• Specialty steel products

Headquarters

HQ city

Urayasu

HQ country

Japan

HQ region

Asia

Offices11 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Marketing or Sales, Infrastructure, Technology or R&D

Revenue model

1. Mechanical Structural Steel Tube Wholesale: Wholesale distribution of mechanical structural steel tubes and specialty steel tubes. This is the core revenue stream, with ¥177 billion annual handling volume (2024) for Fusoh Steel Tubes standalone and ¥220 billion for the group.
2. Component Processing Services: In-house cutting, CNC turning, grinding, and machining of steel tubes to customer specifications. Adds value through processing before delivery.
3. Import/Export Trading: International trading function enabling procurement of overseas materials and components. Supports global supply chain coordination.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels5 records

Core offering

Fuso Steel Pipe distributes mechanical structural steel tubes (grades STKM13A, STKM13C, S45CTK, SCM415-440TK series, SUJ-2, OST-2, STM-C/R) and specialty steel tubes from a constant 10,000-ton inventory. The company provides one-stop in-house processing including CNC turning, 5-axis compound machining, grinding (honing, cylindrical, internal), 3D laser tube cutting, and various cutting operations. It also sells machined parts and coordinates global material procurement through subsidiaries in Thailand, Indonesia, and China.

Product overview

Fuso Steel Pipe is a steel pipe trading and processing company offering a comprehensive portfolio centered on mechanical structural steel pipes (STKM13A, STKM13C, S45CTK, SCM415-440TK series, SUJ-2) and special steel pipes. The company operates a 'material + processing' one-stop service model, combining raw material sales from its 10,000-ton inventory with in-house machining capabilities (CNC turning, 5-axis compound machining, grinding, 3D laser cutting), parts supply (bushings, cylinders, rods), and global coordination services through overseas bases in Thailand, Indonesia, and China. The core products are the various steel pipe grades, supported by processing services as the primary value-adding capability, with parts supply and global procurement as complementary offerings.

Differentiator

Problem solved

Functional benefit

Products and services

• Mechanical Structural Steel Pipes (機械構造用鋼管) Carbon steel, alloy steel, and special steel seamless pipes (grades STKM13A, STKM13C, S45CTK, SCM415-440TK series, SUJ-2, OST-2, STM-C/R) used as mechanical structural components for construction machinery, industrial machinery, and civil engineering applications; distributed from a constant 10,000-ton inventory.
• Steel Pipe Processing Services (鋼管加工サービス) Comprehensive steel pipe processing including CNC turning, 5-axis compound machining, grinding (honing, cylindrical, internal), 3D laser cutting, dual-end simultaneous machining, and various cutting operations for components used in construction machinery, machine tools, and seismic isolation equipment.
• Parts Supply (部品販売) Sale of machined components including bushings, cylinders, rods, special processed tubes, joints, and specialized hardware (dust covers, check valves, steel plate fixing fixtures) for industrial machinery and construction applications.
• Global Coordination (グローバル対応) Trade and global material procurement coordination leveraging overseas bases in Thailand, Indonesia, and China (Wuxi), enabling international supply chain management and JIT delivery of steel tubes and machined components with Japanese-quality standards.
• Teppantai (てっぱんたい) - Steel Plate Fixing Fixture (敷鉄板固定金具) Metal fixture for securing steel plates without welding, preventing displacement and accidents, featuring M12 hex bolts and set screws for safe, quick installation and removal; intended for construction sites using steel road plates.
• High Water-Sealing Check Valve (高止水型逆止弁) Check valve with water-sealing performance up to 2 MPa, designed for use with backfill injection holes in steel pipe applications for civil engineering and water infrastructure.

Quantifiable outcome

• Material substitution from round bar to steel tube achieved ~90 tons of CO2 reduction (iron source reduction of ~41 tons) across 2020–2021 for participating customers
• +2 more outcomes

Named customers15 records

Segments5 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Nine partnerships are on record, tiered core and supporting.

• Sumitomo Metal Onesteel Pipe Co., Ltd. (住商メタルワン鋼管株式会社)coreOthersDesignated specialty dealer for Sumitomo Metal Industries (now Nippon Steel Corporation). Primary upstream supplier of steel tubes and related products.
• Nippon Steel Trading Corporation (日鉄物産株式会社)coreOthersMajor supplier of steel tubes and specialty steel products to Fusoh Steel Tubes.
• JFE Shoji Steel Pipe & Tube Corporation (JFE商事鋼管管材株式会社)coreOthersMajor supplier of steel tubes and specialty steel products to Fusoh Steel Tubes.
• Itochu Marubeni Steel Co., Ltd. (伊藤忠丸紅鉄鋼株式会社)coreOthersMajor supplier of steel tubes and specialty steel products to Fusoh Steel Tubes.
• Mitsui & Co. Steel Limited (三井物産スチール株式会社)coreOthersMajor supplier of steel tubes and specialty steel products to Fusoh Steel Tubes.
• Fukada Heat Treatment Co., Ltd. (深田熱処理工業株式会社)supportingImplementation/ SI/ Consulting PartnerHeat treatment partner company for Fusoh Tube Parts, providing heat treatment services (quenching, tempering, annealing) as part of the one-stop processing supply chain.
• Komatsu Denki Kagaku Kogyo Co., Ltd. (小松電気化学工業株式会社)supportingImplementation/ SI/ Consulting PartnerMetal surface treatment partner for Fusoh Tube Parts, providing plating and surface finishing services as part of the complete processing supply chain.
• Sunsho Co., Ltd. (株式会社サンショ)supportingImplementation/ SI/ Consulting PartnerWelding services partner for Fusoh Tube Parts, providing welding assembly services as part of the component finishing process.
• IM Shots Co., Ltd. (株式会社アイエムショット)supportingImplementation/ SI/ Consulting PartnerBlast processing partner for Fusoh Tube Parts, providing shot blasting and surface preparation services.

Scale indicators7 records

Recent moves17 records

Expansion highlights6 records

Direct peers

• Hanwa Co., Ltd. Major Japanese steel and metal products trading company distributing a broad range of steel products including structural tubes and processed components. Comparable in serving Japanese OEMs with steel material plus value-added processing, though Hanwa operates at significantly larger scale and broader scope than Fuso.
• Nippon Steel Trading Corporation: Wholly-owned trading arm of Nippon Steel distributing steel products including structural tubes and processed components. A direct competitor and current supplier of Fuso — comparable in serving construction-machinery and industrial OEMs with tube products.
• JFE Shoji Trade Corporation: Trading subsidiary of JFE Steel distributing steel pipes, tubes, and processed steel components. Directly comparable to Fuso in distributing mechanical structural steel tubes to Japanese industrial manufacturers.
• Metal One Corporation: Joint-venture steel trading company between Mitsubishi Corporation and Sojitz, distributing a broad range of steel products including structural tubes and processed components. Comparable to Fuso as a domestic Japan-focused steel distributor with processing services.
• Itochu Marubeni Steel Inc. Joint steel-trading venture between Itochu and Marubeni distributing mechanical structural tubes, processed steel, and specialty steel products. Comparable to Fuso in serving Japanese industrial OEMs with tube and value-added processing offerings.
• Mitsui & Co. Steel Ltd. Steel-trading subsidiary of Mitsui & Co., distributing steel pipes, tubes, and processed steel products in Japan and globally. Directly comparable as a large-format steel distributor serving similar industrial OEM customers.

Broad incumbents

• Sojitz Corporation: Japanese general trading company (sogo shosha) with a significant steel division distributing pipes, tubes, and processed steel products. Broader than Fuso in scope but directly comparable in steel tube distribution to industrial customers.
• Vallourec S.A. Global leader in premium seamless steel pipe solutions for energy and industrial applications. A much larger incumbent with global manufacturing, comparable to Fuso in the industrial/mechanical structural tube space though operating at a fundamentally different scale and end-market mix.
• Tenaris S.A. Global manufacturer and supplier of steel pipe products and related services for energy, industrial, and automotive applications. Comparable as a broad mechanical/industrial steel tube supplier, though much larger and more international than Fuso.

Others

• Marubeni-Itochu Steel Inc. (alternative listing): Parent organization above the Itochu Marubuni Steel joint venture; trades and processes steel products for industrial customers in Japan and abroad. Comparable to Fuso as a Japanese steel product distributor serving industrial OEM customers, though operating at materially larger scale.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles12 records

Subsidiaries5 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Fuso Steel Pipe