Before the anti-wear concrete mud hoses of the ground pump, water should be drawn first to check whether there is any leakage in the position of each pipe, and then the pipes should be pumped to lubricate the pipes, usually with mortar or cement. After the grouting hopper is pressurized, the mortar needs to be pumped, and the concrete that meets the conditions needs to be poured into the concrete to carry out normal pressure delivery. The mortar is sent by pressure and then put into the mortar. The characteristic of the molecular formula of the EPDM hose is that it is a saturated rubber hose, which is not easily affected by external factors. It has very good high temperature resistance, corrosion resistance and aging resistance. However, it is characterized by low density and filling performance. It can add a lot of greasy or filler during processing. Under the premise of controlling costs, its mechanical equipment performance will not change significantly. 

For 17 years, Litong has been adhering to the values ​​of “integrity first, customer first”, and has persistently pushed forward the development concept of “leading artistic creativity, practicing prioritizing selection, engaging in lean production, and climbing above everything else”. Technology, and its production of fiber materials, hydraulic hoses, industrial hoses, oil drilling hoses, food and pharmaceutical industry plastic hoses, rubber products and fluid connectors, focusing on the upstream and downstream industrial chain service projects of rubber hoses worldwide, equipment The main task of manufacturers contributing to the global intelligent manufacturing system and striving to become the world industry leader in fluid technology. LT301API 7K series products – rotating drilling and shock absorber plastic hose: widely used in standpipes and rotating pipes (rotary exploration ) flexible connection between the middle or pump and the standpipe (rotary vibrator) for pumping sand at very high working pressures in oil drilling and exploration work, water and sand in water emulsions, mineral oils, ethylene glycol alcohol and polyethylene glycol; the nominal diameter layer is mostly made of NR&SBR/HNBR/UPE material, which has very good chemical stability and wear resistance, and the reinforcing layer is made of 2-6 layers of stainless steel wire spiral; Weather-resistant, the overall pipe requirements conform to the international API 7K specification.The high-end oil drilling plastic hose industry has always been monopolized by overseas, and has passed API verification in the high-end oil drilling plastic hose field. Several products of the company conform to API 7K, 16C, 16D, etc. New materials such as PTFE, UPE, and esterified nitrile rubber are used in pipes, with more reliable quality and higher testing standards.

In overseas crude oil and related major It has gained a certain reputation in the API oil industry. Crude rubber hose, also known as plastic brake hose, flexibility-enhancing oil plastic hose, gasoline and diesel discharge plastic hose, is a kind of plastic hose used for inhaling, discharging and transporting aromatic hydrocarbons. Oil-based soft plastic hose. Compared with the water-rubber hose, the oil-rubber hose is inserted into the copper core wire grounding device to eliminate static electricity. In addition, the oil-rubber plastic hose can be added with a stainless steel wire spiral to improve resistance Wear performance, increased service life.