... Copper Pipe AMERICAN STANDARD ASTM B88 SEAMLESS COPPER WATER TUBE TYPE M, Type K, Type L Straight WATER COPPER PIPE:AMERICAN STANDARD ASTM B88 ... /2, 5/8 and 3/4 diameters, and Type Kand Type L wall thinkness.TYPE M:Size:3/8",1/2",3/4",1 ... ",3",3-1/2",4",5",6",8",10",12"Type K:Size:1/4",3/8",1/2",5/8 ... ",3",3-1/2",4",5",6",8",10",12"Type L:Size:1/4",3/8",1/2",5/8 ...