Products CYLINDER MANUFACTURING

CYLINDER MANUFACTURING

With the exception of the basic raw material of steel strips in coils, valve necks, and the gas flow control valves, which are sourced externally, the whole process is carried out in our factory in the Second Industrial City in Riyadh.

 

The cylinder production is carried out in three separate divisions.  In the first stage, the Metal Division, metal fabrication takes place.  The collars, base rings, mid sections and top and bottom shells are produced from coils of steel. The various processes include blanking, shearing, deep drawing, piercing, trimming and beading, embossing, rolling and forming.  The formed parts are then conveyed into the Welding Division.  Here, all parts are thoroughly degreased to ensure total welding integrity.  In this division, the following welding processes take place: valve necks and collar to the top shells, base rings to the bottom shells and the long seams on the mid sections.  The top and bottom shells and the mid sections are pre-assembled and the circumferential seam welding takes place resulting in semi-finished cylinders.  All welding is done automatically.

 

The final stage of production takes place in the Finishing Division.  Here, the cylinders receive their heat treatment, hydro-testing and shot-blasting before being painted with primer and baked.  The top coat of paint is then applied.  The cylinders are painted according to each customer's requirement because each national market has its own standard colour for the identification of LPG cylinders.  After the top coat, the cylinders are baked again.  Finally, the valve neck threads are cleaned, stamped with test date and tare weight, the valves inserted and leak test carried out.  Cylinders are manufactured and tested according to Saudi Standards and any other international standards as required by each customer.

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