Exhaust Flexible Pipe, Metal Hose, Expansion Joint manufacturer / supplier in China, offering American Type Perforated Heavy Duty American Constant Tension Hose Clamp, American Type Perforated Heavy Duty High Torque Constant Tension Hose Clamp, German-Style Hose Clamps for Quick Installation of Various Materials W1 W2 W4 W5 and so on.