FIBRAVA BUYING GUIDE

Understand the steel construction.

A practical comparison of 2, 3, 4 and 5 steel-wire constructions. Steel diameter is not fiber diameter.

Separate steel dimensions from fiber dimensions

The 0.4 mm, 0.8 mm and 1.0 mm dimensions in the Fibrava catalogue describe steel strength-member diameters. They are not the diameter of the optical fiber. Specify the fiber count, number of steel members and individual steel diameters together to reduce ambiguity in a quotation.

Four constructions at a glance

Construction	Configuration	Steel diameters
Indoor	1 / 2 / 4 cores · 2 wires	0.4 + 0.4 mm
Outdoor	1 / 2 / 4 cores · 3 wires	0.4 + 0.4 + 0.8 / 1.0 mm
Indoor split-type	2 cores · 4 wires	4 × 0.4 mm
Outdoor split-type	2 cores · 5 wires	4 × 0.4 + 0.8 / 1.0 mm

Specify the messenger option clearly

“0.8 / 1.0 mm” identifies alternative messenger sizes to discuss, not two simultaneous diameters for one wire. An inquiry might specify “2-core outdoor, 0.4 + 0.4 + 1.0 mm, black, 1,000 m per reel.” Confirm the exact model and other performance requirements before ordering.

Wire count alone is not a performance specification

The strength-member arrangement helps distinguish products but does not replace tensile, bend-radius or environmental specifications. Construction illustrations are not to scale; actual dimensions must follow the agreed model specification.