70L 356mm Wall Thickness Industrial Use for Car CNG Cylinder Type 2

Product Description

The manufacturing process of CNG cylinders
1. In the automotive field, compressed natural gas (CNG), as a clean, environmentally friendly and economical fuel, has attracted more and more owners' attention and choice. As the storage device of CNG fuel, vehicle CNG cylinder is an important part of vehicle operation. There are two common process types of automotive CNG cylinders, which are steel inner ring wound cylinders and compressed natural gas cylinders. This article will highlight the differences between these two cylinder processes.
Steel inner bladder ring winding cylinder Steel inner bladder ring winding cylinder is a kind of carbon fiber material winding on the inner wall of the cylinder to form the cylinder process. The main features of this type of cylinder are light weight and high strength. Due to the use of carbon fiber materials, steel annular wound cylinders have lower weight and higher strength than conventional compressed natural gas cylinders.
The manufacturing process of the steel inner ring winding gas cylinder needs to go through the following main steps: First, the selection of high-strength carbon fiber materials, and the lamination and textile of fiber cloth. Second, the inner wall of the cylinder is coated with a colloidal environmentally friendly resin adhesive, and then wrapped around it a carbon fiber fabric. After heat curing treatment and other process steps, the carbon fiber is fixed to the inner wall of the cylinder to form a strong inner liner.
2. Compressed natural gas cylinders Compressed natural gas cylinders are cylinders made of high-strength steel. Compressed natural gas cylinders have higher pressure bearing capacity and better corrosion resistance compared with steel inner ring wound cylinders.
The manufacturing process for compressed natural gas cylinders is relatively simple, but requires strict compliance with a series of manufacturing standards and inspection requirements. The main manufacturing steps include the following aspects: First, the selection of high-strength steel, and the corresponding cutting and forming. Then, anti-corrosion treatment such as rust removal and painting is carried out on the steel surface. Through a series of process steps such as cold drawing, hydroforming and integral welding, a complete compressed natural gas cylinder is formed.
3. Process differences and application scenarios There are certain differences in the process between steel inner ring wound gas cylinders and compressed natural gas cylinders, mainly reflected in the selection of materials and processing technology. The steel inner ring winding gas cylinder is made of carbon fiber material, which has the advantages of lightweight and high strength, and is suitable for use in the automotive field with high lightweight requirements. The compressed natural gas cylinder is made of steel, with higher pressure capacity and better corrosion resistance, suitable for general automotive and commercial vehicle fields.
4. In general, the two cylinder processes have their own advantages and should be selected according to actual needs and application scenarios. For the pursuit of lightweight and high strength vehicles, steel inner ring wound cylinder is an ideal choice; For ordinary use or vehicles with high transportation needs, compressed natural gas cylinders are more suitable.

NO.	type	raw material	liner diameter	working pressure	thickness	length	weight	quantity(pc)
70L	type 2	30CrMO+glass fiber+resin	356mm	200bar	4.8mm	891mm	52.2kg	200

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