The Specialization of Maintenance Service, Pipeline Construction & Valve Supply

Company in Brief

PT. SUMBER MITRA TUJUH is a leading Indonesian industrial engineering, construction, and maintenance service provider. Headquartered in Serang, Banten, we specialize in three core service pillars: Valve Repair & Maintenance, Online Leak Sealing (OLLS), and Pipeline & Civil Construction.

Backed by over 100 highly skilled staff and certified professionals (including Piping Inspectors, Welding Inspectors, and Certified Welders), we operate under strict safety and quality standards (CSMS & ISO Accredited) in full compliance with international standards such as API, ANSI, and MSS.

Our signature strength lies in solving critical industrial challenges, notably providing Online Leak Sealing without requiring plant shutdowns. Leveraging deep local market expertise and proven risk management strategies, PT. Sumber Mitra Tujuh is the trusted partner for national and multinational enterprises across the oil & gas, petrochemical, power generation, and manufacturing sectors.

Why Choose PT. Sumber Mitra Tujuh?

1

Zero-Shutdown Solutions

Specialized in Online Leak Sealing (OLLS) to repair leaks in high-pressure pipes, flanges, and valves without interrupting your plant operations (zero plant downtime).
2

International Standards & Accredited

All operations and testing strictly follow global industry standards (API, ANSI, MSS) and are backed by ISO Accreditation and CSMS (Contractor Safety Management System) compliance.
3

Certified & Skilled Workforce

Driven by a team of over 100 qualified staff and certified specialists, including Piping Inspectors, Welding Inspectors, and Certified Welders
4

Strong Local Expertise & Risk Mitigation

Equipped with deep local market knowledge, enabling us to deliver tailored, flexible solutions with robust risk management strategies.
5

Integrated One-Stop Services

Offering comprehensive end-to-end industrial solutions—from valve repair & supply to piping, coating, instrumentation, and civil/mechanical engineering construction.

Our Services

repair valve & service

Valve Repair & Maintenance Service

Comprehensive repair, refurbishment, testing, and calibration services for various industrial valves (Control, Pressure Relief, and Isolation Valves) following international standards (API/ANSI), conducted both on-site (In-Situ) and in workshops.
online leak sealing (olls)

Online Leak Sealing (OLLS)

A specialized non-destructive solution that seals leaks in flanges, pipes, elbows, and valves under high pressure and temperature without stopping production or shutting down the plant
pipeline & construction

Pipeline & Construction Services

Certified pipeline installation and maintenance (for gas, oil, water, and chemicals), mechanical/electrical engineering work, and civil construction projects including commercial buildings, industrial plant areas, and infrastructure.

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Telepon : 081555378889 / 087774855585

Email : sumbermitratujuh@gmail.com

Head Office : jl raya serang perum puri indah kasemen,serang
banten,kode pos 42191

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