... AL-PE Pipe(for cold water) Material:PE,AL,PE size:16,20,25,32 Cert.: ISO9001,CE OEM service PE-AL-PE Pipe (for cold water ... )1>Material:outside:PE,middle:AL,inside:PE(every layer ... high pressure2>Resistance to erosion and the noiseless water hammer3>Smooth inwall guaranteeing the least resisting ... yet applicable for numerous fields PEX-AL-PEX Pipe for water