This standard specifies the external dimensions and allowable deviations of copper and copper alloy seamless circular and rectangular (square) pipes. This standard applies to copper and copper alloy extruded seamless round pipes and drawn seamless round and rectangular (square) pipes.
GB/T 16866-2006 Referenced Document
JJG 117 Construction Depth Manual Sand Paving Apparatus
GB/T 16866-2006 history
2006GB/T 16866-2006 Dimensions and tolerances of copper and copper alloy seamless tubes
1997GB/T 16866-1997 Wrought copper and copper alloy seamless round tubes for general purposes--Dimensions and tolerances