Assertion: copper tube | /r/HasProperty | pure copper material
Facets:
value: almost
type: DEGREE
Source sentences:
text: Copper tube used for air conditioning and refrigeration applications in the field (sometimes called "refer" or "ACR" tube) is an almost pure copper material meeting the requirements of ASTM B 280 - Standard Specification for Seamless Copper Tube for Air Conditioning and Refrigeration Field Service.