pre-insulated copper tube

pre-insulatedcopperpipe : 1).Copper tube for gas and oil lines ASTMB837, ASTMB38 2).Copper tube for water, sanitary ASTMB88, EN1057 3).Copper pancake coil and straight length for air-conditioning and refrigeration ASTMB280, EN12735 4).Copper tube for general engineering ASTMB75 5).Copper tube for DWVASTMB306 6).insulated connecting tube for split air conditioner 7).square copper tube 8).copper solidering fittings(Elbow, Coupling, Tee) ASTMB16, EN-1254-1 price: competitive, based on the LME. 9) payment: T/T or L/C at sight.