OD 406MM ISO9809 APPROVED TRANSPORTABLE CNG STEEL CYLINDER FOR INDUSTRIES
1. Made ofCrMosteel, safe and strong
2. Extraodinary ability of anti-rust, anti-aging
3.Much moreadvancedplastic powder spray technology than other suppliers
4. Plastic powder for outdoor use, high pressure, bad weather andsunlight durable
5. Cost saving, much more economical than other composite cylinders
6. Working pressure up to 200bar and 250bar
All of the steel tubes are completely custom-made according to our technical requirement, to ensure the best mechanical properties of the CNG cylinder.
b. Cylinder bottom thickness measurement and UT detection
International standards only requires to do air-tightness test on cylinder bottom, but our internal QC system requires extra tests to measure cylinder bottom thickness and do UT detection, in order to eliminate any defective cylinder with tiny cracks or thinner wall at the bottom.
c. Wrinkle inspection
Neither international standards nor Chinese standards require to check wrinkles at cylinder neck and bottom area, but our experiences and experiments told us tiny cracks always exist under wrinkles, and crack is the root cause of cylinder leakage and explosion problems. We use endoscope to 100% inspect each cylinder, to eliminate all that to be found with wrinkles.