Combustion Class B1 Control Cable
Combustion Class B1 product models include：
GB 31247-2014 "Cable and Optical Cable Combustion Performance Classification"
GB/T 9330-2020 "Plastic insulated control cables"
Bare copper: single or multiple stranded copper conductors, oxygen-free copper.
Cable core: the core insulation is cross-linked polyethylene or polyolefin insulation
Cable core: Insulated cores are twisted into cables with optimal pitch
Shielding (if any): bare copper shielding, density ≥80% or copper tape and other forms
Fireproof layer: fireproof layer with excellent performance
Armour (if any): Double steel tape armour
Sheath: high flame retardant low smoke halogen free sheath material
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