... 3.material: plastic and steel 4. easy repair hot water composite pipeSpecificationsPSP Composite PipeThe main materials are PE ... , printing, dyeing and paper making, Building, Agriculture, Shipbuilding, water supply, drainage, gas, thermoelectricity engineering, food and liquid conveying in ... , it's the preferred pipe for urban rural water supply in 21st century. Pipe Outer diameter (mm)Pipe ...