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Application of galvanized pipe
Galvanized steel pipe is divided into cold galvanized steel pipe, hot galvanized steel pipe, cold galvanized steel pipe has been banned, the latter is also advocated by the state can be used temporarily. In the 1960s and 1970s, the developed countries in the world began to develop new types of pipes and gradually banned galvanized pipes. China's Ministry of Construction and other four ministries and commissions have also issued a document to prohibit galvanized pipes as water supply pipes from 2000, the cold water pipes in the new community have rarely used galvanized pipes, and the hot water
Application field of stainless steel pipe
1. Construction field Stainless steel pipes are mainly used in the construction field for water supply pipes, drainage pipes, fire pipes, wire pipes and so on. Because stainless steel pipes have excellent corrosion resistance and strength, they can maintain the luster and fluency of the pipes for a long time, so they are widely used in high-rise buildings, Bridges, tunnels and other large projects. 2. Industrial sector Stainless steel pipes are also widely used in industrial fields, such as chemical, petroleum, food and other industries. Because sta
304 stainless steel product knowledge
304 stainless steel is a common material in stainless steel, with a density of 7.93 g/cm³; The industry is also called 18/8 stainless steel, which means containing more than 18% chromium and more than 8% nickel; High temperature resistance 800℃, with good processing performance, high toughness characteristics, widely used in industrial and furniture decoration industry and food and medical industry. However, it should be noted that compared with ordinary 304 stainless steel, food-grade 304 stainless steel has a more stringent content index. For example, the international definition of 304 s
Present situation of ductile iron pipe
China's ductile iron pipe industry started in the early 1990s, with the strong support of the China Urban Water Supply Association to develop rapidly, after nearly 30 years of practice, its safety, practicality has been widely recognized by the water supply industry, in 2008, the domestic annual output has reached 2.2 million tons, is 11 times that of 1990. As China is a country lacking of water resources, there are more than 600 water shortage cities, more than 200 serious water shortage cities, water supply and water-saving cause is on the rise, ductile iron pipe has broad prospects for deve
The difference between carbon and steel plates
1. Different nature: 1. Carbon steel plate: iron carbon alloy with carbon content of 0.0218%~2.11%. 2, steel plate: a high-strength steel. 2. Different characteristics: 1, carbon steel plate characteristics: (1) It contains small amounts of silicon, manganese, sulfur and phosphorus. (2) The higher the carbon content in carbon steel, the higher the hardness and strength, and the lower the plasticity. 2, steel plate characteristics: Under strong impact and extrusion conditions,
The basic concept and application range of carbon structural steel
First, the basic concept and application range of carbon structural steel Carbon structural steel refers to steel materials with a carbon content of no more than 2.11%, which are widely used in manufacturing, construction, metallurgy, shipbuilding, machinery manufacturing, petroleum and chemical industries. It has good plasticity, weldability and machinability, and the price is relatively low, with a relatively high cost performance. Two, several types of steel commonly used in carbon structural steel 1. Q235 steel: It is a commonly used low carbon steel, mainly used in ge
Stainless steel export is an important part of China's export economy, it plays an important role in stimulating China's economic growth, but from the current situation of China's stainless steel foreign trade, China's stainless steel exports have met greater resistance. Since last year, foreign frequently came to China's stainless steel casting products for "double reverse" news, which has a great impact on China's stainless steel casting industry, exports are a large part of the development of China's stainless steel industry, in its industrial development occupies a huge market share
SPCC is a kind of universal low carbon Steel, its full name is "Steel Plate Cold Rolled Commercial", Chinese translation is "commercial cold rolled plate". This steel is generally used to make some common cold-rolled products, such as automotive sheet metal, household appliance shell, mechanical parts and so on. The chemical composition and mechanical properties of SPCC steel are usually specified in accordance with the Japanese industrial standard JIS G3141. Its
Stainless steel export is an important part of China's export economy, it plays an important role in stimulating China's economic growth, but from the current situation of China's stainless steel foreign trade, China's stainless steel exports have met greater resistance. Since last year, foreign frequently came to China's stainless steel casting products for "double reverse" news, which has a great impact on China's stainless steel casting industry, exports are a large part of the development of China's stainless steel industry, in its industrial development occupies a huge market share
Seamless steel pipe is a long strip of steel with a hollow section and no joints around it. The steel pipe is divided into hot rolled and cold drawn (rolled) two kinds, hot rolled seamless pipe is generally processed on the automatic lathe, its outer diameter, wall thickness size accuracy is high, the surface is smooth, the wall thickness is uniform, can be fixed or double size delivery; The specifications of cold-rolled (dial) seamless steel pipes are expressed by external dimensions (such as outer diameter or side length) and wall thickness, and the size range is 2-200mm in di
World Steel Association: Steel demand is expected to recover by 1% in 2023 World Steel Association: According to the official website of the World Steel Association (WSA), the association released the latest short-term (2022-2023) steel demand forecast report on April 19, local time, the global steel demand will decline 2.3% in 2022 to 1.7967 billion tons after the growth of 2.8% in 2021; In 2023, steel demand will recover by 1.0 percent to 1,814.7 million tons. The current forecasts are a downward revision from those made in April, reflecting the impact of persistently high inf
In the first ten days of October, the social stock of steel rose 6.0% month on month China Iron and Steel Association Market Research Department China Iron and Steel Association steel social inventory monitoring report shows that in the first ten days of October, 21 cities five varieties of steel social inventory is 9.03 million tons, a monthly increase of 51 million tons, up 6.0%, the inventory fell for the first time after 10 days of recovery; 1.15 million tons more than at the beginning of the year, up 14.6 percent; It was 2.09 million tons lower than the same period last year
8163 seamless steel tube (fluid tube) is a type with a hollow cross section and no weld from head to tail. Steel pipe has a hollow cross section, a large number of used for conveying fluid pipe conveying oil, natural gas, gas, water and some solid materials pipeline. Compared with solid steel such as round steel, steel pipe has the same bending and torsional strength and light weight. It is a kind of economic cross-section steel, which is widely used in the manufacture of structural parts and mechanical parts, such as oil drill pipe, automobile drive shaft, bicycle frame and steel scaffolding
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