Metal Cylinder Tank Rack:Cylinder trolley is made of stainless steel,which is rust-proof,corrosion-resistant,smooth and easy to clean,crack-resistant,scratch-resistant,etc Versatile Usage:Suitable for both indoor and outdoor use,it is ideal for storing a wide range of 101520 L gas cylinders such as gas,nitrogen and acetylene in any number of different environments Thickened Base:Gas cylinder storage rack using thickened cold-rolled steel plate,ultra-resistant to pressure,strong load-bearing capacity,more Resistent and lightweight,better fixation performance Safety Transport:The cylinder trolley is equipped with a stabilizing steel ring,which prevents the cargo from falling accidentally and provides additional protection and security for each use Smooth*amp; Silent Cylinder trucks are equipped with two rubber wheels,which not only ensure the smooth transportation of cylinders,but also avoid the noise disturbances common to lesser quality models