Argon seamless steel cylinder manufactured by casting from heated mold and drawing with rolling dies and closing 
	
Optimum design production and test by batch 
	
Strict quality control by elevated temperature test, wall thickness measurement, thread inspection, shot blasting test, and pneumatic test. 
	
Integral neck and accurate internal thread with concave base 
	
Can be refilled with gases specified, high pressure liquefied gas 
	
Widely used in many industries, marine, medicine, laboratory, construction site, etc.