SBM Chemicals and Instruments Pvt. Ltd. Offer Round Profiles for Fibre Optic Cables. SBM Chemicals and Instruments Pvt. Ltd. Manufacture round profiles from endless fibre reinforced plastics. The Round Profiles are designed specifically for use as central strength elements in the construction of fibre optic cables. Positioned in the centre or outer jacket of the cable profiles protect the fine and thus fragile optical fibres from damage caused by mechanical stress. The Round Profiles for Fibre Optic Cables are particularly suitable for thermoplastic coatings because of the material`s structured, lubricant free surface. Adhesion of coating materials to the profile is outstanding and thus guarantees that coated profiles do not allow of longitudinal water flow.