Connectors&Terminals JBTL series clamp is copper-aluminium pg clamp, which applied to unendure ... of squeezed material, others are hot-galvanization steel components. JBTL series clamp is copper-aluminium pg clamp, which applied to unendure ... , splicing fitting, aluminium parallel groove clamp,double groove clamp) JB-TL series bimetallic parallel groove clamp