Good quality Seamless Steel Cylinders for sales
SINOMA Cylinders are ideal for bulk CNG transporter assembly. We can easily make assemblies by using different pieces of cylinders, so we can meet the different customer needs. The SINOMA sales team is also very professional, and has help us a lot when we started our business.

—— Bulgaria Anonymous Customer

We actually did not buy directly from SINOMA. At the beginning phase when our fleet want to buy 20 trucks powered by CNG, we got to know SINOMA team and got many good suggestions from them. Now, we are operating a CNG powered fleet of more than 80 trucks.

—— Indonesian Anonymous Customer

Talking about cylinders that can be used as the important components of offshore CO2 Fire Suppression Systems, there is no better choice in China that can provide you the most coverage of different Marine Classification Certificates and at the same time, good service and competitive price. I defenitely thank them for the help over the last 3 years.

—— Korean Anonymous Customer

I'm Online Chat Now
1 2 3 4 5
Raw material analysis Cylinder leakage testing Cutting the tubes Heat Treatment Shot Blasting
Raw material analysis
Cylinder leakage testing
Cutting the tubes
Heat Treatment
Shot Blasting

Raw material analysis

For different application and working pressure, diameter... Sinoma engineers have developed our own requirement for raw materials and always require our raw material supplier to provide the qualified tubes only. One important inspection in our process, is for the engineer to analyze the components of tube raw materials.

Cylinder leakage testing

The cylinder is pressurized by immersing into the water to test if there is any bubble. Alternative way is to paint soap water on the surface of cylinder.

Cutting the tubes

Once the raw materials have arrived in our warehouse. Our inspector will check some basic data such as the diameter, the out surface and the length. Then, a sample tube will be cutted first to do sampling before the batch production.

Heat Treatment

To achieve the required performance requirements, we have to do treatment jobs with the raw tubes. Two tipical ways for the treatments are: Quenching & Normalization.

Shot Blasting

For many industries, the gas are extreme pure and will require very smooth inner surface, for instance the calibration gases, vehicle natural gases, medical gases... For this reason, each cylinder inner surface is shot blasted and then washed to ensure the perfect smooth and clean inside the cylinder.

  • Production Line

    With its headquarter in Beijing, the cylinder businesses of SINOMA has its manufacturing bases located in different provinces of China. Each factory has independently passed the ISO 9001 & ISO 14001 certification for quality management & environment protection. According to the different applications of the gases in the cylinder, the production facility & lines are approved further according to multiple national and international standards including ISO/TS 16949 for vehicle industry, DOT 3AA for gas cylinders to be used in USA, Custom Union for gas cylinders to be used in Russia and the custom union countries, PED/TPED for cylinders to be used in Europe and other areas which adopt the EU quality certification system etc.

    1. Highly Automatic Cylinder Production Line

    Sinoma Cylinder Production Line Adopts States of Art machineries imported from Germany & Austria, and excellent machineries made in China. After 14 years, these machines are at their most excellent status for cylinder production.

    Mechanical Arms are introduced for the cylinder production, to avoid the unstable quality output caused by artificial interferences

    The main manufacturing processes are all controlled by computers


    The finished cylinder products are powder painted by different RAL color code according to the gas to be storaged and different countries' regulations and the specific requirements from customers. They are packed on pallets and protected by plastic webbings before loading into the containers. Meanwhile, the bumpy conditions of sea transportation are also considered, as well as the local road transport weight limits in different countries to avoid any damages or any ecomic loss for customers.


    packed cylinders for automobile maker customers

    cylinders pending for packaging and will be sent to customers in South Korea

  • R&D

    The SINOMA technicians and engineers strictly follow the cylinder industrial regulations for designing, raw material analyzing, prototyping, production testing, finished products' random inspection. The strict control of each related design and manufacturing step, can ensure the excellent and stable quality output.


    cylinder design process - finite element analysis

    cylinder design process - finite element analysis 1


    cylinder design process - finite element analysis 2


    cylinder design process - finite element analysis 4


    cylinder design process - finite element analysis 5


    cylinder design process - finite element analysis 6


    cylinder design process - finite element analysis 7



Contact Details

Contact Person: John

Tel: 86-166-0275-7248

Send your inquiry directly to us (0 / 3000)