... device and other rubber products.Our products are widely used to mining, metallurgy, oil, project machinery, chemical industry, the public ... internal rubber bears the pressure of delivery medium in order to protect the steel wire from corrupting while the enforced ... used.The maximum working pressure-resistant up to 70-100MPa.REMARK: Ther standard pls reference to GB/T10544-03,DIN20023,SAE100R9~13. The ...