Nodular cast iron submarine cable / optical cable protection pipe is made of nodular cast iron. This product can effectively protect submarine power cable and optical cable from external mechanical damage and damage, such as gravel, sediment, floating ship skeleton, floating ice, bottom trawler, anchor, iceberg, earthquake, etc. The product is connected by Haff spherical hinge, and each protective tube can rotate at a certain angle, so that the cable and optical cable have a certain bending flexibility. Due to its convenient construction, corrosion resistance and wide application in submarine cable protection and reconstruction projects, the cable / optical cable will not be damaged.

Nodular cast iron submarine cable protection pipe is made of high-quality nodular cast iron as the main raw material, added with some special metal components and processed on a specific mold. Spheroidal graphite is obtained from nodular cast iron through spheroidization and inoculation, which effectively improves the mechanical properties of cast iron, especially the plasticity and toughness, so as to obtain higher strength than carbon steel. Nodular cast iron is a high-strength cast iron material developed in the 1950s. Its comprehensive properties are close to steel. Based on its excellent properties, it has been successfully used to cast some parts with complex stress and high requirements for strength, toughness and wear resistance. Nodular cast iron has rapidly developed into a widely used cast iron material second only to gray cast iron. The so-called "replacing steel with iron" mainly refers to nodular cast iron.

The effective length of each section of nodular cast iron submarine cable / optical cable protection pipe is 500mm-1000mm, which is connected by Haff ball joint. Each section of protection pipe can rotate at a certain angle in all directions, so that the cable and optical cable have a certain bending flexibility. Due to its high density and certain adhesion, the product is suitable for the protection of submarine cable landing section and reef area, has a certain role in preventing tidal seawater scouring, and has seismic and impact resistance. The inside and outside of the casing are treated with paint anti-corrosion treatment, which has corrosion resistance for a certain time, and can effectively protect submarine power cables and optical cables, Avoid external mechanical damage and damage to submarine cables and optical cables.

The special structure of nodular cast iron submarine cable protection pipe increases the anti-seismic and impact performance, and can effectively protect submarine cable scouring. When an earthquake occurs on the seabed or the seabed changes, because the Haff spherical hinge structure of the protection pipe can absorb the energy of vibration or impact, it can effectively protect submarine cables and optical cables from vibration or impact damage.