What Mcs Steel does

M.C.S. Steel Public Company Limited (BKK: MCS) is a Thai steel fabrication company founded in 1992 and listed on the Stock Exchange of Thailand since 2005. Headquartered at a 255-rai site in Bangsai, Ayutthaya, the company designs, fabricates, and erects structural steel for high-rise buildings, power plants, bridges, and general steel works. Full production capacity is stated at 70,000–80,000 tons per year, of which approximately 50,000 tons per year are exported (around 90% of output), with Japan as the dominant end market served through a 98%-owned subsidiary, M.C.S.-JAPAN Co., Ltd., in Chiba-Ken.

The company operates three integrated service divisions: Engineering Design (fabrication drawing, cost estimation, cutlist programming, CNC programming), Parts manufacturing (CNC/plasma/pipe cutting, boring, drilling, band saw — over 3,200 parts daily), and Quality Control (11 ultrasonic test machines with 12 certified inspectors, capable of testing over 10,000 meters of steel per month). Manufacturing equipment includes KOBELCO 15/20/30-ton column welding robots, 17 welding teams capable of 300,000+ meters of welding per month, and Build-up H beam and Box Column lines with stated capacities of 4,000 tons/month and 2,000–3,000 tons/month respectively. The company maintains a broad certification portfolio including AISC, EN 3834-2, ISO EN 1090 Part 2, ISO 9001:2015, ISO 14001, OHSAS 18001, and the S-Class Fabricator Certificate from the Steel-Rib Fabricating Association of Japan.

MCS Steel sells through direct enterprise field sales to large general contractors, primarily in Japan, with additional project-based work in Thailand, China, Australia, and Myanmar. Revenue derives from one-time project contracts for steel fabrication and erection; pricing is not publicly disclosed. The customer base comprises tier-1 Japanese construction firms (Kajima, Shimizu, Takenaka, Obayashi, Mitsubishi Trading) and selected Thai clients including Airports of Thailand and Thai Obayashi. Ownership is dispersed among public shareholders; the founder/CEO Dr. Naiyuan Chi serves as Chairman and CEO, and the company maintains majority ownership of three operating subsidiaries (M.C.S.-JAPAN 98%, M.C.S. Steel Xiamen 74%, Tanaka Welding Center 99.92%). Registered capital stands at Bt 477 million (fully paid-up) following a 2020 capital reduction from Bt 500 million.

Name

Mcs Steel

Legal name

M.C.S. Steel Public Company Limited

Website

https://mcssteel.com

Company type

Public

Founded year

1992

Operating status

Operating

Headcount range

501–1,000 employees

Short description

M.C.S. Steel Public Company Limited is a Thai structural-steel fabricator founded in 1992 that designs, manufactures, and erects steel for high-rise buildings, power plants, and bridges, exporting roughly 90% of output (about 50,000 tons per year) primarily to Japanese general contractors.

Ownership category

akta.pro rank

Product category

Steel Fabrication Services

NAICS

Steel Product Manufacturing from Purchased Steel (3312)

SIC

Fabricated Plate Work (Boiler Shops) (3443)

akta.pro primary industry

Steel Plate, Sections & Welded Assemblies (IMADACAD)

Keywords

• Steel fabrication services
• Structural steel manufacturing
• Industrial steel erection
• Heavy steel structures
• Steel engineering services

Headquarters

HQ city

Bang Sai

HQ country

Thailand

HQ region

Asia

Offices3 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Steel Structure Fabrication and Erection: Full-service steel fabrication including planning, design, fabrication and erection of steel structures for high-rise buildings, power plants, bridges, and general steel works. Primarily serves Japanese market with annual export of 50,000 tons.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels1 record

Core offering

M.C.S. Steel Public Company Limited is a steel fabricating company that provides complete steel-planning, design, fabrication, and erection services for high-rise steel structure buildings, power plants, bridges, and general steel works. The company operates 13 factories in Bangsai, Ayutthaya, Thailand with a production capacity of 70,000-80,000 tons per year, exporting approximately 90% of output (50,000 tons annually) primarily to Japan. Service divisions include Engineering Design, Parts Manufacturing, and Quality Control/Assurance.

Product overview

M.C.S. Steel Public Company Limited is a steel fabrication company offering a comprehensive suite of services for steel structure construction. The company operates as a single unified offering with three interconnected service divisions: Engineering Design (comprising Drawing, Estimate, and Cutlist departments), Parts manufacturing, and Quality Control/Assurance. Their core capabilities include steel-planning, design, fabrication, and erection of high-rise steel structure buildings, power plants, bridges, and general steel works. The company also provides pre-assembly, shotblasting/painting, and transportation/stock services as part of their end-to-end steel fabrication solution.

Differentiator

Problem solved

Functional benefit

Products and services

• Engineering & Design Services
• Parts Manufacturing
• Quality Control Services
• Steel Fabrication & Erection

Quantifiable outcome

• Production capacity of 70,000-80,000 tons per year
• +3 more outcomes

Named customers13 records

Segments3 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

Five partnerships are on record, tiered core and minor.

• M.C.S.-Japan Co., Ltd.coreOthersWholly-owned subsidiary operating as service center in Japan. Located at 711-2 Shinde, Oowada, Yachiyo-shi, Chiba-Ken, 276-0046 Japan. Handles local client relations and quality inspection for exported products.
• M.C.S. Steel Xiamen Co., Ltd.coreOthersSubsidiary in China located at No.68 Shanbian Road, Dongfu Town, Haicang District, Fujian Province, China. Investment increased from 12% to 74% in 2017.
• Tanaka Welding Center Co., Ltd.minorOthersSubsidiary established in 2010 with 99.92% of its capital. Investment increased from Bt40 million to Bt99 million in 2016.
• Hokoku Juki Co.minorStrategic or Co-development PartnerJoint venture partner in 1996 when company name changed to M.C.S.-HOKOKU CO., LTD.
• Posco China Dalian Steel Fabricating CenterminorOthersInvestment of 49% for Bt95.34 million in 2014, followed by divestment in 2016.

Scale indicators7 records

Recent moves7 records

Expansion highlights5 records

Broad incumbents

• Zamil Steel: Saudi Arabia-based global manufacturer of pre-engineered steel buildings and structural steel products serving Middle East, Asia, and Africa. Comparable in fabricated structural steel manufacturing for commercial and industrial projects, with broader geographic reach than MCS.
• Cornerstone Building Brands (NCI Building Systems): North American leader in steel building systems and structural metal products for commercial construction. Comparable in engineered steel building fabrication but operates at substantially greater scale and serves primarily the US market.
• Nippon Steel Engineering Co., Ltd. Subsidiary of Nippon Steel Corporation providing steel-structure engineering, fabrication, and construction services for buildings, bridges, and industrial facilities. Overlaps directly with MCS's core structural steel fabrication offering but with the backing of Japan's largest steel producer.
• Bluescope Steel Limited: Australian-headquartered global steel manufacturer with a substantial steel buildings and construction solutions division. Comparable in fabricated steel building products and infrastructure steel supply, though at much larger scale and with broader geographic and product diversification.
• JFE Engineering Corporation: Major Japanese engineering and construction company that designs and fabricates large-scale steel structures including bridges, buildings, and energy infrastructure. Comparable end-product (structural steel for infrastructure), but operates at significantly greater scale and across a broader portfolio including energy plants.

Emerging players

• Kinden Corporation: Japanese facility construction company with capabilities in steel structural work for industrial and commercial buildings. Adjacent competitor in the Japanese structural steel market, with growing engineering capabilities and customer relationships overlapping MCS's GC client base.

Others

• Sumitomo Mitsui Construction Co., Ltd. Major Japanese general contractor that self-performs significant steel structure fabrication and erects steel-frame buildings. While not a pure fabricator, it is one of MCS's actual Japanese customers and a comparable entity for understanding structural steel demand and pricing dynamics in Japan.

Direct peers

• Yamato Kogyo Co., Ltd. Japanese structural steel fabricator specializing in steel structures for high-rise buildings, bridges, and industrial facilities. Most directly comparable Japanese peer in terms of product mix, customer base (Japanese GCs), and certification footprint, though Yamato serves primarily the Japanese domestic market.
• Cho Thavee Public Company Limited: SET-listed Thai structural steel fabricator serving similar high-rise, industrial, and infrastructure end markets. Directly comparable in product mix (fabricated steel structures), geographic base (Thailand-based exporters), and customer segments (regional and Asian contractors).

Regional players

• PEB Steel Buildings Co., Ltd. Vietnam-based regional steel building and pre-engineered building fabricator serving Southeast Asia. Comparable business model (steel structure fabrication for industrial/commercial/infrastructure projects) but primarily serves ASEAN markets rather than Japan.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/mcs-steel-pcl-mcs-

Compliance6 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 records

Subsidiaries3 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 Mcs Steel