Cylinder and Vessel Re-Threading Services
For organizations that rely on high-pressure cylinders and vessels, maintaining thread integrity is critical to both safety and long-term performance. CP Industries provides precision re-threading, cylinder repair, and vessel repair services that restore thread geometry, extend service life, and ensure ongoing compliance with DOT, UN, and ASME standards.
Whether you operate a single storage bank or manage a full fleet of industrial gas, defense, or alternative fuel systems, our cylinder services keep your equipment safe, certified, and in service.
Why Re-Threading Matters
- Extending Cylinder Lifespan: During years of service, external thread wear and minor damage are inevitable, especially in high-duty or frequently serviced cylinders. Rather than replacing the entire vessel, re-threading offers a cost-effective repair solution, restoring proper thread form and strength while extending the life of your assets by years or even decades. This makes it one of the most valuable cylinder repair methods available to operators who prioritize longevity and safety.
- Safety and Compliance Benefits: Cylinder threads secure valves, fittings, and closures that maintain internal pressure. Any defect or cross-threading can compromise seal integrity and lead to unsafe conditions. CP Industries’ re-threading and vessel repair services are performed under the supervision of an independent inspection agency in accordance with 49 CFR Part 180.212, assuring every repaired vessel meets or exceeds its original design requirements.
CP Industries’ Re-Threading Process
1. Inspection and Assessment
Every project begins with a detailed inspection to assess thread condition, wear depth, and material integrity. Our technicians verify that the vessel meets the criteria for safe repair and document each step for full traceability.
2. Thread Repair and Quality Assurance Testing
If suitable for repair, threads are precisely machined and restored using controlled processes and OEM-grade tooling. Each repaired cylinder then undergoes dimensional verification and pressure testing to confirm thread alignment, sealing capability, and long-term reliability. These are essential steps in any high-quality cylinder repair or vessel repair service.
3. Compliance With DOT/ASME Standards
As both a manufacturer and authorized repair facility, CP Industries performs:
- DOT & UN container re-threading under 49 CFR Part 180.212, with third-party inspection.
- ASME vessel repairs under our certified ASME “R” (Repair) Stamp.
These capabilities guarantee that each repaired vessel maintains its certification and can safely return to service, which is an essential aspect of compliant cylinder services.
Applications & Industries Served
Our re-threading and cylinder repair capabilities support multiple markets and operational demands:
- Industrial Gas – bulk storage and transport cylinders for Oxygen, Nitrogen, Argon, Helium, and specialty gases.
- Oil & Gas – pressure vessels for drilling, offshore modules, and motion compensation systems.
- Defense – military gas storage flasks and life-support vessels requiring absolute reliability.
- Alternative Fuels – CNG and Hydrogen storage systems, where re-threading helps maintain pressure integrity and extend service intervals.
Benefits of Choosing CP Industries
1. Certified Expertise and Rigorous QA/QC
With more than a century of pressure vessel manufacturing experience, CP Industries combines engineering precision with proven cylinder repair expertise. Every re-threading operation is supported by full documentation, material traceability, and inspection oversight to inspire total confidence in every repaired cylinder.
2. Cost Savings vs. Replacement
New cylinders represent significant capital investment. Re-threading provides a smart, cost-efficient alternative, restoring usability and extending vessel lifespan without sacrificing safety or compliance. Clients typically realize substantial savings while maintaining continuous operations and reducing environmental waste from premature replacement — one of the most tangible advantages of professional cylinder services.
Request a Quote
If your cylinders or vessels show thread wear or damage, our engineering team can help determine whether re-threading or cylinder repair is the right solution. Request a quote today and extend the life of your high-pressure assets and maintain certified performance for years to come.
