The 279mm steel gas cylinder refers to cylinders with an outer cylinder diameter of 279mm. According to the cylinder capacity, it is divided into variety of types, including 30L steel gas cylinder, 34L gas cylinder, 40L cylinder, and steel gas cylinders with capacity of 50L, 53L, 60L, 68L, 70L, 80L and 100L. All types of cylinders have the same wall thickness of 6.4mm and the same working pressure of 20Mpa. However, they are designed with varied length to offer varied cylinder capacities. For instance, the 50L steel gas cylinder comes with a length of 1045mm and weight of 52kg, and the 100L gas cylinder has a length of 1945mm and weight of 92kg. More detailed specifications are given in the following chart.

Quality of the 279mm Steel Gas Cylinder
According to the Chinese national and international related standards, the gas cylinder bottom is required to undergo air tight test only to test the bottom fusion quality. During our years of CNG cylinder production and testing experience, we have found that this air tight test cannot effectively detect cylinder bottom defects, such as tiny cracks and insufficient bottom thickness, when the bottom thickness is over 3mm. Therefore, in order to avoid any defects in our gas cylinders, we conduct ultrasonic thickness tests and ultrasonic flaw detection of our cylinder bottoms to make sure all our CNG cylinders are qualified and to eliminate any risk of explosion caused by insufficient bottom thickness, bottom micro-cracks, etc.

Appearance Advantage of the 279mm Steel Gas Cylinder
We have made substantial investments in acquiring steel tube materials with uniform thickness. Uniform cylinder wall thickness, coupled with our unique slightly saucer-shaped cylinder bottom and neck design, allows for effectively reduction in cylinder weight. So, while being used on vehicles, our CNG cylinder can assist in reducing energy consumption.

Usage Instruction on the 279mm Steel Gas Cylinder
The working pressure for our CNG cylinder is the designed gas filling pressure of 15℃ (20Mpa).

Chemical Composition of the Steel Material for 279mm Steel Gas Cylinder Production
Material designation: 34CrMo4

Composition	C	Si	Mn	P	S	P+S	Cr	Mo	V	Ni	Cu
Content (%)	0.30- 0.37	≤ 0.40	0.60- 0.90	≤ 0.020	≤ 0.020	≤ 0.030	0.9- 1.2	0.15- 0.30	-	≤ 0.3	≤ 0.2

Technical Specifications of the 279mm Steel Gas Cylinder

Type	Outer Diameter (mm)	Capacity (L)	Length (mm)	Weight (Kg)	Designed wall thickness (mm)	Working Pressure (MPa)	Material
CNP20-30-279A	279	30	680	34	6.4	20	34CrMo4
CNP20-34-279A		34	755	38
CNP20-40-279A		40	860	43
CNP20-50-279A		50	1045	52
CNP20-53-279A		53	1100	54
CNP20-60-279A		60	1225	60
CNP20-68-279A		68	1370	66
CNP20-70-279A		70	1400	68
CNP20-80-279A		80	1585	76
CNP20-100-279A		100	1945	92

As a professional 279mm steel gas cylinder manufacturer in China, BANNER also provides 267mm steel gas cylinder, 325mm automotive CNG cylinder, 406mm automotive CNG cylinder, 356mm CNG cylinder, and much more.