Oil well pipeline is the only channel for oil production and gas outlet. Due to the increasingly complex and harsh service environment, with the rapid development of long-distance oil pipeline and the increasing transmission pressure, pipeline safety affects everyone's heart. In order to ensure the structural stability, safety and economy of the pipeline, Litong technology has effectively solved the practical problems concerned by customers, such as BOP well control, kill fluid transmission and other key hose products Ordinary liquid hoses are usually made of polyethylene, that is, plastic materials, but plastic materials are usually not wear-resistant, so rubber materials also need to be used to produce high wear-resistant hoses. Composite rubber material UPE material has high wear resistance, strong corrosion resistance and excellent comprehensive performance. UPE is widely used in high-pressure hose production and life. EPDM (ethylene propylene diene monomer) has excellent heat resistance, ozone resistance and aging resistance due to its unique molecular structure and properties. The produced rubber products can be used at 120 ℃ for long-term use and at 150 - 200 ℃ for short-term or intermittent use. Reasonable cooperation can further improve the service temperature range. Therefore, the high temperature resistant steam hose on the market generally adopts EPDM to ensure the normal use of the steam hose under high temperature conditions. Lt1306 UPE super wear-resistant concrete conveying hose is suitable for conveying concrete, gypsum, grouting, sand and gypsum. The inner adhesive layer is ultra-high molecular weight polyethylene (UPE) styrene butadiene rubber (SBR) & natural rubber (NR) synthetic rubber. UPE material is imported from Germany, with a molecular weight of 5 million times that of China. It has high wear resistance, and the reinforcement layer adopts multi-layer spiral steel wire, It can well protect the pipe body, and the outer layer of the pipe body is also super wear-resistant UPE material, which can well improve the service life of the pipe. On March 8, 2003, women have several identities of daughter, wife and mother. Each identity means softness, but women's identity is not limited to this. In Litong, women are professionals. Giving women various identities, including daughter, wife and mother, means softness. Some have a deep understanding of capital operation and financial management, some have rich experience in hose manufacturing, others prepare delicious food for employees every day, others cook for customers. Working in Litong has no restrictions on women's status. We pay attention to the development of every woman, Good luck, courage and fearlessness on goddess day. Crude asphalt can be divided into natural asphalt and petroleum asphalt. Natural asphalt is the residue of oil seeping out of the surface and evaporation. Petroleum asphalt is a refined petroleum residue left after appropriate process treatment. Asphalt is a kind of tar made by the dry distillation of coal, wood and other organic matter, which is reprocessed. Low viscosity. Binder can make asphalt plastic. With the increase of content, the temperature stability increases.