325mm CNG Cylinder

325mm CNG Cylinder

The CNG cylinder shown on this page is manufactured with 325mm outer diameter, wall thickness of 7mm, and rated working pressure of 20MPa. It is made of high quality 34CrMo4 to ensure reliable cylinder performance and safety. The 325mm CNG cylinder is classified into different types according to its capacity, including 50L, 52L, 55L, 57L and maximally 120L gas cylinders, to name a few. The cylinder length and weight vary with cylinder capacity. For instance, our 50L CNG cylinder has length of 815mm and weight of 54mm, our 60L gas cylinder has length of 945mm, and weighs 62kg, and 100L steel cylinder has length of 1475mm and weight of 92kg. For more details, please refer to the second table below.

Quality of the 325mm CNG 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 325mm CNG Cylinder
Instead of conventional painting methods, we utilize a powder coating method for our gas cylinder. Coated according to international standards, the cylinder surface is provided with improved ductility and malleability and can effectively avoid coating peeling phenomenon, as compared with traditional liquid paint coating. The powder coating also improves the luster of the cylinder surface.

Usage Instruction on the 325mm CNG Cylinder
The designed service life for our steel gas cylinder is 15 years, with gas filling no more than 1000 times every year.

Chemical Composition of the Raw Material for 325mm CNG 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 325mm CNG Cylinder
Type Outer Diameter (mm) Capacity (L) Length (mm) Weight (Kg) Designed wall
thickness (mm)
Working Pressure (MPa) Material
CNP20-50-325A 325 50 815 54 7.0 20 34CrMo4
CNP20-52-325A 52 845 56
CNP20-55-325A 55 880 58
CNP20-57-325A 57 905 60
CNP20-60-325A 60 945 62
CNP20-62-325A 62 975 63
CNP20-65-325A 65 1015 66
CNP20-68-325A 68 1050 68
CNP20-70-325A 70 1080 70
CNP20-73-325A 73 1120 72
CNP20-75-325A 75 1145 73
CNP20-77-325A 77 1170 75
CNP20-80-325A 80 1210 77
CNP20-85-325A 85 1280 81
CNP20-90-325A 90 1345 85
CNP20-95-325A 95 1410 89
CNP20-100-325A 100 1475 92
CNP20-105-325A 105 1540 96
CNP20-110-325A 110 1610 100
CNP20-115-325A 115 1675 104
CNP20-120-325A 120 1740 108

BANNER is a professional 325mm CNG cylinder manufacturer and supplier, based in China. Our company also provides 406mm CNG cylinder, 356mm automotive CNG cylinder, 279mm steel gas cylinder, and more.

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