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CMW is a world leader in design, fabrication & requalification of compressed gas transportation equipment also known as "tube trailer". Tube trailers manufactured by CMW are optimized for maximum payload. Our trailers and chassis are designed in such a way that the weight distributions on the axles are optimized for the bridge law requirements. CMW is accredited by various national and international regulatory bodies. Our workforce includes experienced professionals who work with the clients to meet their specific needs.
Tubes mounted on the trailers are generally requalified every 5 or 10 years depending on the tube specifications. Typically tubes that go on a jumbo tube trailer are of DOT-3T, DOT-3AAX and UN specifications. A tube requalification process may include the following processes:
- Purge tubes for very low moisture content
- Complete disassembly
- Thread gauging on threaded components
- Neck Thread Evaluation
- Verify wall stress levels and minimum required thickness
- Internal & External Visual Inspections
- Internal Cleaning
- Appropriate testing methods such as Acoustic Emission (UE), Ultrasonic Examination (UE) and hydro testing
- Protective Coating
- Moisture Analysis
- Leak Check
- Complete assembly
The pneumatic components, pressure relief device and manifold are installed properly to make everything leak free. CMW manufactures its own manifold for most of the products. All the pneumatic components are leak checked, usually at higher pressure than the service pressure, to confirm that the unit is completely leak free before it leaves our facility.
Tube Trailers manufacture involves complete new fabrication of chassis as well as other required fabrication works. Depending on the type of tube and required payload, axles on the chassis are positioned in such a way that the weight is distributed properly to meet the bridge law requirements. CMW is continuously improving its designs to make the tube trailer structurally sound to meet the required regulations, and at the same time optimize the design to provide the maximum payload.