Raw material is in the form of seamless cylinder tubes of various sizes, grades. The seamless tubes are then cut into desired lengths as per cylinder water capacity. The cut tubes are the fed to an end heating induction furnace, where one end of the tube is heated to around 1200 deg C. The heated tube is then fed to a hot spinning machine, which spins the heated tube end to dome shape in hot condition. The open end of the tube is now subjected to induction heating of around 1200 ºC. The heated end is now fed into a hot spinning machine, which spins the heated end into a neck shape. The product is now fed into a heat treatment furnace. Here several processes can be carried out depending on material grade, application, thickness available, working pressure, material properties, etc.

Next, the hardness test is then carried out on hardness testing. The neck formed is now cut into desired length by a neck-cutting machine and then drilled by a neck-drilling machine. The neck is then threaded on a CNC machining centre. The product is first checked for weight water capacity. Then the hydrostatic stretch test at 5/3 times of working pressure. The cylinder is then cleaned first externally and then internally by respective internal and external shot blasting machines. The cylinder is then weighed and then sent to a data-stamping machine, the cylinder is then primer painted on the painting conveyor. The product is then dispatched with or without valve and cap as per customer requirements.

RawMaterial Reception	Length Cutting	Induction Heating	Bottom Spinning	Induction Heating
Shoulder and Neck Spinning	Neck Opening	Hardening Furnace	Quench Bath	Tempering Furnace
Neck Machining	Grit Blasting	Mass Check & Hardness Test	Ultrasonic Inspection	Hydrostatic Test
Air Leakage Test	Pressure Cyclic Test	Stamp Marking	Internal Cleaning	Painting & Final Inspection
Bonfire Test	Final Threading	Packaging	Shipping