... think steel-wire armored PVC(PE) power cable.For laying down wells and under water, able to bear certain pulling force.Construction:No ... equal-section-area+1 small section area neutral core),5cores(5 3 equal-section-area cores+2 small area neutral cores ... , aluminum sheets, etc. The international standard we can follow: ASTM, IEC, BS, GB, DIN and AS/NZS standards and other standards ...