DPL450-175-2.3 is a premium vertical welded insulated gas cylinder, which is a flagship product of Runfeng. By adopting welding processes such as secondary arc welding machine and argon arc welding, our products boast a beautiful, solid, and reliable shape. To ensure the quality of the product, we”ll conduct two static evaporation rate tests, a liquid filling test, a gas tightness test and a cylinder pressure test each time.