以下说的是什么东西?
TECHNICAL CONDITION FOR LINEPIPES COATING
Polyethylene pipeline coating material for inner wrap,
Black color, in form of roll.
-6" Wide X 200 ft approximately.
-Thickness: Not less than 15 mils.
-Dielectric strength: Not less than 15 Kv. For the above required thickness, Or not less than 1 K.v for each mils
-Internal core diameter: 1 1/2".
All material shall be complied with DIN 30670 or Equivalent.
