LPG gas cylinder provide fuel for home and small business and LPG is a good alternative to electricity. Our gas cylinder are guaranteed to be in high quality since all of them having passed a series of strict test, such as hydrostatic test, burst test, tensile strength, Charpy impact test and pressure cycling. Tianlong Steel Cylinder conforms to the national and international safety standards such as ISO 4706, ISO22991, EN1442. This refilled gas cylinder has been tested under the pressure of 34 bar and the work pressure is 18 bar. The thickness of this bottle body is more than 2.3 mm, providing a safe using experience to our clients. Our company owns many quality certifications, so the customers can put great confidence in Tianlong's gas cylinders.