2011NF A51-126-2:2011 Copper and copper alloys - Seamless, round copper tubes for air conditioning and refrigeration - Part 2 : tubes for equipment.
2005NF A51-126-2/A1:2005 Copper and copper alloys - Seamless, round copper tubes for air conditioning and refrigeration - Part 2 : tubes for equipment.
0000 NF A51-126-1:2001
1989NF A51-123:1989 SEMI-FINISHED COPPER PRODUCTS. LEVEL WOUND COILS FOR THE REFRIGERATION AND AIR CONDITIONING INDUSTRIES.