Preserve your hometown, every family will, and so will your children. Dozens of anti-corrosion companies such as Hayes Anti-corrosion, First Anti-corrosion, Hebei Construction Engineering Henan Office and Zhonghui Anti-corrosion are all in Changyuan County. Changyuan County is a county directly under Henan Province. Located in the northeast of Henan Province, it faces Dongming County across the Yellow River in the east, borders fengqiu county and lankao county in the south, and borders hua county and Puyang County in the north. Named after "the county has a defensive wall". Xinhe Railway in Changyuan County runs through the east and west, and Provincial Highway 308 and Provincial Highway 2 13 run through the whole territory, where Changji Expressway and Daguang Expressway meet in a cross shape. The main function of chimney is to ignite and smoke, smoke and improve combustion conditions. High-rise buildings are generally equipped with several vertical stairs, exhaust ducts, air supply ducts, smoke exhaust ducts, elevator shafts and pipe shafts.

1. Changyuan City is a county-level city under the jurisdiction of Henan Province, located in the northeast of Henan Province, between11429'-1459' and 34 59'-35 23' north latitude. By June 2020, Changyuan had five streets, 1 1 town, and two towns, with a permanent population of 905,400 and an urban population of 5201.7 million. No.368 Renmin Road, Puxi Street, municipal government. Before 22 1, the first city of Qin was changed to Changyuan County. In 20 19, Changyuan County was abolished and county-level Changyuan City was established. It belongs to warm temperate continental monsoon climate. Changji Expressway, Daguang Expressway, Jidong Expressway, Xinhe Railway and Provincial Highway 308 and 2 13 pass through the territory. Changyuan City is a national civilized city, a national garden county and a national comprehensive experimental zone for new urbanization.

2. Anti-corrosion technology of metal materials and their products In corrosive media, various anti-corrosion technologies are adopted to prolong the service life of metal products and ensure the safe and stable operation of process equipment. This is one of the most commonly used and effective methods to prevent and control equipment corrosion. Material selection must be: understand environmental factors and corrosion factors, including types, concentration, temperature, pressure, flow state, types and quantities of impurities, oxygen content, presence or absence of solid suspended solids and microorganisms; Study relevant data; According to the actual situation, the simulation test was carried out and reliable material selection data were obtained. So as to understand the corrosion resistance and process characteristics of the material. Comprehensively consider the corrosion resistance and economy of materials; Consider appropriate anti-corrosion measures.