High-Quality LPG Gas Cylinder for Laboratory Testing Equipment. Seamless Spinning Construction: Formed by one-step spinning process with no weld defects for superior integrity. 316L Stainless Steel Material: Provides excellent corrosion and high-temperature resistance for toxic substances. Wide Pressure Range: Available up to 5000psi (345 bar) with design pressures reaching 7500psi. Comprehensive Safety Features: Equipped with explosion-proof pressure relief devices and rupture discs. Multiple Capacity Options: Available in sizes from 50ml to 10000ml to suit various sampling needs. Dual-End Design: Features female quarter-inch NPT threader ends for versatile connection. Patented Technology: Holds national production license and specific patent certificate ZL 2011 20094190.X.