Chapter 3 - Material Properties - plastic pipe
Polyethylene Plastics Molding and Extrusion Materials(2,5). This standard has since been replaced by ASTM D 3350; ASTM D 1248 is no longer applicable to PE piping materials. Type Density I 0.910 - 0.925 (low) II 0.926 - 0.940 (medium) III 0.941 - 0.959 (high)
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