Stromag Engineers Ltd. Offers Pinjoint Unipole Insulated Conductor Bar. Stromag Engineers Ltd. Also manufactures Single pole individually insulated conductors, single pole PVC housing, tepeofrm copper conductor, multi conductor, pvc hosing Pinjoint Unipole Insulated Conductor Bar provides a safe and economical supply of electric power for track guided Mobile Machinery. The Pinjoint Unipole Insulated Conductor Bar is individually insulated conductors. The Pinjoint Unipole Insulated Conductor Bar is ideally used for EOT Cranes etc.