WILKO copper pipe is manufactured using only the highest grade phosphorus deoxidized copper (DHP) complying with UNS 12200.

ASTM B88 Type L

Physical Properties of WILKO Copper pipe :
Composition :Alloy C12200 99.9% Min Copper
Phosphorus 0.015 ~ 0.040%
Melting Point :1981oF (1083oC)
Density :0.00000894kg/mm3
Thermal Expansion :0.00118inch/10oF (0.117mm/10oC.m)
Modulus of Elasticity :2.46 x 106psi (17000MPa)
Typical Uses Include :Underground residential, commercial and industrial uses