• Pakuwon Tower (Tunjungan Plaza 6), Lt. 22 OT 18. Surabaya, Jawa Timur
Opening Hours: Monday - Saturday 08.00 AM to 16.30 PM
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PT. Dumas Makmur Sejahtera

Empowering Industrial Growth

Trusted expertise in mechanical, electrical, piping, safety, structure, and telecom — serving oil & gas, mining, palm oil, industry, and government projects since 2000.
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PT. Dumas Makmur Sejahtera

Innovating Industrial Solutions

From Surabaya to the nation — driving growth in oil & gas, mining, agriculture, and industries with trusted engineering solutions.
Our Products Contact Us
Innovators
Your Trusted Partner in

Industrial & Factory

We strive to be a company that is able to meet consumer needs and also encourage the development of local businesses to the international market. By prioritizing quality and service, we are ready to serve customers and business partners in creating mutually beneficial collaborations. We are committed to delivering reliable, high-quality engineering and technical solutions tailored to meet the diverse needs of our clients.
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Your Trusted Partner
in Industrial Solutions

We believe strongly that we can and must do things differently.
From electrical to safety—one partner for your entire project.
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What We Offers

Our Specialized Products

You will find yourself working in a true partnership that results in an incredible experience, and an end product that is the best.
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Electrical
Providing safe, reliable, and efficient electrical systems and installations that support industrial operations, reduce downtime, and ensure uninterrupted performance while meeting strict quality standards and sustainability requirements.
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Instrument
Delivering precise instrumentation systems for monitoring, measurement, and control, ensuring accuracy, safety, and efficiency, while supporting automation and optimization across complex industrial processes and critical operations.
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Mechanical
Delivering reliable mechanical solutions through advanced engineering, fabrication, and installation services, designed to improve efficiency and ensure long-term durability in diverse industrial projects and operations.
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Piping
Offering comprehensive piping systems and professional installations designed to ensure smooth flow, long-term durability, and high efficiency in a wide range of industrial applications.
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Safety
Providing integrated safety systems and reliable solutions that protect people, equipment, and operations, while ensuring compliance with international standards and supporting sustainable industrial performance.
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Structure
Specializing in structural works and engineering services that deliver strong, durable, and efficient solutions to support construction, industrial facilities, and infrastructure development with high standards of safety and reliability.
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Telecommunications
Offering advanced telecommunication systems and network solutions to strengthen connectivity, enhance monitoring, and support reliable communication across industrial environments, enabling seamless integration and efficiency in operations.
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Tools
High-quality industrial tools and equipment are supplied to support fabrication, installation, and maintenance activities, ensuring reliability, efficiency, and safety across mechanical, electrical, instrumentation, and other critical engineering operations.
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PT. Dumas Makmur Sejahtera

Contact info

For any inquiries, please contact us using the information provided below.
  • (+62) 31 33 600 800
  • (+62) 821 9221 8080
  • info@dumas.id
  • Pakuwon Tower (Tunjungan Plaza 6), Lt. 22 OT 18. Surabaya, Jawa Timur
  • Opening Hours : Monday - Saturday 08.00 AM to 16.30 PM