Reasonable and Competitive Pre-Insulated Copper Pipe Line Set for HVAC Works
for every Air Conditioning & Refrigeration Application including Ductless mini-split,
heat pump and Centralized Air Ducted Units, 99.9% Pure copper pipe meets ASTM B280 and C12200
standard, 1/4“-3/8” is the out dimension in inch, 6.35mm - 9.52mm is the out dimension in metric.