JR2 rectangle metal hoses: Rectangular tube of rectangular metal hose machine towline Jinnuo Lean Machine Tool Accessory Manufacturing Co., Ltd. specializing in the production of JR2 rectangle metal hoses, this product is all metal construction. The products meet the joint standards of JB/GQ058285 enterprises to adapt to all types of metal chip machine and cutting machine. To prevent the fever iron supply, water, gas line damage, protection of labor safety