
Clean Systems Reliable Operations
Expert chemical cleaning and hot oil flushing to keep your equipment running at peak performance.
OUR SERVICES
Diverse solutions tailored to your every need

Flange Management
Ensure leak-free connections and compliance with industry standards through precise flange handling and integrity checks.

Pressure Testing / Hydrostatic Testing
Reliable strength verification by testing systems up to 1.5× working pressure using water, oil, air, or nitrogen.

Chemical Cleaning and Hot Oil Flushing
Remove contaminants, rust, and oil deposits to achieve ISO/NAS cleanliness standards, improving reliability and extending equipment life. For heat exchangers, boilers &economizers, system pipeline and pressure vessels.


Our Strength
WHY CCW?
CCW delivers advanced chemical cleaning and hot oil flushing solutions that keep your systems clean, safe, and operating at peak efficiency. With strict adherence to globally recognized cleanliness standards, including NAS 1638‑92 for hot oil and ISO 4406 for chemical cleaning. We ensure your equipment meets precise contamination control requirements. Our processes reduce downtime, extend equipment life, and integrate sustainable practices, providing maximum reliability for critical industrial operations.
Proven Expertise
Compliance with Global Standards
Advanced Equipment & Technology
Safety & Environmental Responsibility

ABOUT
About CCW
Clean Concept Works (CCW) delivers specialized industrial solutions to keep your systems clean, safe, and reliable. We focus on Flange Management, Pressure & Hydrostatic Testing, and Chemical Cleaning & Hot Oil Flushing, ensuring compliance with international standards and minimizing downtime.
Our mission is simple:
✔ Maximize equipment reliability
✔ Reduce maintenance costs
✔ Extend system life
With advanced technology and proven expertise, CCW is your trusted partner for precision and performance.

Contact Us
Tell us about your next project
8 Boon Lay Way, #11-12,
8 @ Tradehub 21 Singapore 609964
H/P : (65) 90903030 (Stephen Kwek)
Office : (65) 6966 6027
Email : ases@asenergyservices.com
Clean Concept Works Pte Ltd
(Formerly known as Onehub Tank Coating Pte Ltd)
UEN : 200512088R
(65) 6966 6027
8 Boon Lay Way, #11-12,
8 @ Tradehub 21,
Singapore 609964
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