This cylinder is a specially customized cylinder designed by SD-KEWILL to meet the needs of steel mills' steelmaking equipment. It is a metallurgical cylinder with adjustable stroke, dual rod constant speed, and a swing shaft earring connection. It has a long service life, high temperature resistance, and is not prone to failure. Shandong Kewei Automation Equipment Co., Ltd. specializes in designing, producing and manufacturing QGB and JB series metallurgical cylinders, which can be customized according to the specific needs of customers' working conditions.