2　Terms

2.0.1　optical fiber unit

Minimum unit directly including optical fiber component of coated optical fiber，tight-buffered optical fiber or optical fiber ribbon etc.

2.0.2　manufacturing equipment

The abbreviation of optical cable manufacturing equipment in optical cable plant.

2.0.3　optical fiber coloring machine

Manufacturing equipment for optical fiber coloring.

2.0.4　secondary coating production line

Manufacturing line equipment for extruding plastic coating or tube around optical fiber component of optical fiber，optical fiber bundle or optical fiber ribbon etc.to form an optical fiber unit.

2.0.5　stainless steel loose tube production line

Manufacturing line equipment for welding stainless steel loose tube around optical fiber component of optical fiber，optical fiber bundle or optical fiber ribbon etc.to form an optical fiber unit.

2.0.6　stranding production line

Manufacturing line equipment for stranding optical fiber unit or strength member together in a certain mode to form a cable core or an optical cable.

2.0.7　sheathing production line

Manufacturing line equipment for extruding the sheath around optical cable element of optical fiber unit or cable core etc.

2.0.8　center line

The line through the central-axis hole of the parts of manufacturing equipment.

2.0.9　center high line

The line through the central-axis hole of the parts of manufacturing equipment and parallel to the ground.

2.0.10　center contour line

The running route of the axis of optical cable or optical cable component with the equal height of manufacturing line during manufacturing，i.e.the center height line with the equal height.

2.0.11　mainframe

Equipment that plays a main role in manufacturing equipment.

2.0.12　reverse angle of SZ stranding

The angle formed by rotating unidirectionally from a certain point to another point on the stranding head of manufacturing equipment and then rotating reversely during manufacturing optical fiber unit or stranding optical cable component i.e.SZ reverse angle.