What Koike Sanso Kogyo does

Koike Sanso Kogyo (小池酸素工業株式会社) is a Japanese industrial machinery manufacturer founded in 1936 and publicly traded on the Tokyo Stock Exchange under ticker 6137. The company is headquartered in Sumida, Japan, and operates as a comprehensive manufacturer of cutting, welding, and gas-related industrial equipment. Its product portfolio spans gas cutting machines, plasma cutting machines, laser cutting machines, portable automatic cutting machines (including the DTP-25 Crab launched October 2025), welding machines and systems, automatic welding helmets, industrial and medical gases (oxygen, nitrogen, argon, acetylene, hydrogen, CO2, helium, and specialty mixed gases), automation systems (KSR cleanup robot, KPPS steel member production system, TPS transformer production system), and system software including the Konnection® production management platform.

The company generates revenue primarily through hardware sales across cutting and welding equipment, industrial and medical gas distribution, and software licensing for its production management systems. Its go-to-market combines direct enterprise sales through domestic offices with a network of more than 50 domestic partner companies in Japan, complemented by wholly-owned regional subsidiaries and websites covering Asia, the United States, Europe, China, India, and South Korea. Customer segments are horizontal — primarily serving manufacturing companies requiring metal cutting and welding equipment, steel and metal fabrication businesses, and healthcare facilities needing medical gases — with no disclosed customer logos or anchor accounts.

KOIKE employs between 101 and 250 staff and is governed as a publicly listed Japanese corporation with a 103-year operating history (the 103rd annual general meeting of shareholders is scheduled for June 26, 2026). Recent strategic activity includes the publication of its mid-term management plan 'NEXT STAGE 2026' in May 2024, a corporate logo and philosophy refresh in October 2025, the October 2025 launch of the DTP-25 Crab portable automatic cutting machine, executive personnel changes announced May 2026, and the July 2026 acquisition of business operations from a non-consolidated subsidiary. The company maintains an active investor relations program and continues regular product development and capital markets activity into fiscal year 2026.

Name

Koike Sanso Kogyo

Legal name

小池酸素工業株式会社

Website

https://koike-japan.com

Company type

Public

Founded year

1936

Operating status

Operating

Headcount range

101–250 employees

Short description

Koike Sanso Kogyo is a Japanese industrial manufacturer of cutting, welding, and gas-related equipment founded in 1936. The publicly traded company (TYO:6137) serves manufacturing, steel fabrication, and healthcare customers through domestic partners and global subsidiaries across Asia, the US, Europe, China, India, and Korea.

Ownership category

akta.pro rank

Headquarters

HQ city

Sumida

HQ country

Japan

HQ region

Asia

Offices7 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Cutting Equipment Sales: Sale of gas cutting machines, plasma cutting machines, laser cutting machines, portable automatic cutting machines, and related cutting equipment including nozzles, torches, pressure regulators, and accessories
2. Welding Equipment Sales: Sale of welding machines, welding systems, welding jigs, welding carts, welding materials, welding dust collectors, and welding training devices
3. Industrial Gas Sales: Sale of industrial gases including oxygen, nitrogen, argon, acetylene, hydrogen, carbon dioxide, helium, and various mixed gases for welding and cutting applications. Also includes medical gases.
4. System Software: Sale and licensing of production management systems, navigation systems, and Konnection® software solutions
5. Labor-saving Equipment: Sale of chamfering machines, dross/burr removers, and other labor-saving equipment
6. Material Products (溶材): Sale of welding flux materials including Multimetals, Plasticmetals, Mograis, and Diehtol product lines for various welding applications

Go-to-market motion1 record

Distribution channels3 records

Marketing channels5 records

Core offering

Koike Sanso Kogyo manufactures and sells industrial cutting machines (gas, plasma, and laser), welding equipment, industrial and medical gases, and proprietary automation systems (KSR, KPPS, TPS), along with material handling equipment and the Konnection software platform. Its products are sold to metal fabrication, shipbuilding, construction, manufacturing, and healthcare customers through direct channels, domestic partners, and international subsidiaries. The portfolio spans consumable gases, capital equipment, automation hardware, and integration software for production lines.

Product overview

Koike Sanso Kogyo (小池酸素工業株式会社) is a comprehensive manufacturer of cutting, welding, and gas-related industrial equipment. The company operates as a multi-product platform offering: (1) Cutting/heating equipment including portable automatic cutting machines (DTP-25 Crab), gas cutting machines, plasma cutting machines, and laser cutting machines, complemented by automated systems like the KSR cleanup robot, KPPS steel member production system, and TPS transformer production system; (2) Welding equipment including welding machines, welding systems, and automatic welding helmets with accessories; (3) Gas-related products including industrial gases (oxygen, nitrogen, argon, acetylene, hydrogen, CO2, helium), medical gases, and various mixed gas formulations for welding and cutting applications; (4) System software including Konnection®, production management systems, and navigation systems. The portfolio is distributed through domestic and international operations across Asia, US, EU, China, India, and Korea.

Differentiator

Problem solved

Functional benefit

Brands

• KOIKE: Primary brand name for cutting, welding, and gas-related products including cutting equipment, welding machines, industrial gases, and related systems
• Konnection®
• KPPS
• KSR
• TPS
• KAP-8030N
• KGR-1000R
• KSK

Products and services

• Gas, plasma, and laser cutting machines

Segments3 records

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

One partnership is on record.

• Over 50 Domestic Partner Companies in JapancoreStrategic or Co-development PartnerKOIKE has established partnerships with more than 50 domestic companies in Japan to enhance technology capabilities, accelerate product development, and strengthen market competitiveness. These partnerships support the company's mission to provide innovative technology and superior products while maintaining industry leadership.

Scale indicators4 records

Recent moves7 records

Expansion highlights6 records

Direct peers

• Messer Group: Messer is a privately-held industrial gas and cutting/welding equipment specialist. Its product mix (gases + cutting equipment) closely mirrors Koike's combined cutting + industrial gas + welding offering, making it one of the most directly comparable peers.
• Miller Electric (ITW): Miller Electric, part of Illinois Tool Works, manufactures arc welding and cutting equipment for industrial customers. Directly comparable to Koike's welding machines and welding systems product lines.
• Hypertherm: Hypertherm is a U.S.-based manufacturer of industrial cutting systems and software, with leadership in plasma and waterjet cutting. Directly competes with Koike's plasma cutting machines and cutting automation systems.
• Daihen Corporation: Daihen is a Japanese manufacturer of power electronics, welding equipment, and robotics. Direct competitor in the Japanese domestic market for welding machines and cutting systems, with overlapping customer base in Japanese manufacturers.
• Fronius International: Fronius is an Austrian manufacturer specializing in welding technology, solar energy, and battery charging. Its welding division directly competes with Koike's welding equipment portfolio, particularly in automated and inverter-based welding systems.
• ESAB Corporation: ESAB is a global manufacturer of welding and cutting equipment, consumables, and digital solutions. Directly comparable to Koike's core product lines across gas/plasma/laser cutting and welding equipment for industrial fabrication customers.
• Lincoln Electric Holdings: Lincoln Electric is a leading global manufacturer of welding, cutting, and joining products. Highly comparable to Koike's welding equipment and cutting machines portfolio, though at significantly larger scale and global reach.

Broad incumbents

• Bystronic: Bystronic is a Swiss manufacturer of sheet metal processing machinery, including laser cutting and bending systems. Overlaps with Koike's laser cutting machines and broader metal fabrication automation offerings, though primarily focused on sheet metal processing.
• Air Liquide: Air Liquide is a global industrial gas giant with significant presence in welding and cutting applications. Competes with Koike's industrial gas business and adjacent gas-handling equipment, particularly in Asia and Europe.
• Linde plc: Linde is the world's largest industrial gas company with operations across welding, cutting, and gas supply. Overlaps with Koike's industrial gas and gas supply equipment business, but at vastly larger scale and global breadth.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• YouTubeyoutube.com/@koikesansokogyo2140
• Xx.com/KoikeSansoKogyo
• Facebookfacebook.com/KoikeSansoKogyoCoLtd

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

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 Koike Sanso Kogyo