The steel tube has a hollow section, and its length is much larger than that of the steel with diameter or circumference.
According to the production process, it is divided into Seamless Steel Pipe and welded pipe, of which two kinds of seamless steel pipe are hot rolling and cold rolling (drawing). The welded pipe is divided into straight seam welded pipe and spiral seam welded pipe.
Steel pipe is not only used for transporting fluid and powdery solid, exchanging heat energy, manufacturing mechanical parts and containers, but also an economic steel. The use of steel pipe to build structural grid, pillar and mechanical support can reduce weight, save metal 20 to 40%, and realize mechanized construction in factories. The manufacture of road and bridge with steel pipe can not only save steel products and simplify construction, but also greatly reduce the area of protective coating and save investment and maintenance costs.
According to the production method, the steel pipe can be divided into two main categories: seamless steel pipe and slotted steel pipe.
1, seamless steel tubes can be divided into hot rolled seamless pipes, cold drawn tubes, precision steel pipes, hot expansion pipes, cold spinning pipes and extruded pipes according to the production methods.
Seamless steel tubes are made of high quality carbon steel or alloy steel, and are divided into hot rolling and cold rolling (drawing).
2, welded pipes are divided into furnace pipe, electric welding (resistance welding) tube and automatic arc welding pipe because of its different welding technology. Because of its different welding forms, there are two kinds of welded pipe and spiral welded pipe, and the end shape is divided into circular welded pipe and special type (square, flat, etc.) welded pipe.
The welded steel pipe is made of the rolled tube shaped steel plate, which is welded by the seam or spiral seam. In the manufacturing method, it is divided into the welded pipe of low pressure fluid transportation, the spiral seam welded pipe, the direct coil welding pipe, the welding pipe and so on. Seamless steel pipe can be used in various industries such as liquid pressure pipes and gas pipes. Welded pipes can be used for water conveyance pipelines, gas pipes, heating pipes, electrical appliances pipes, etc.
Steel Pipe Steel Pipe,Galvanized Steel Pipe,Stainless Steel Pipe,Carbon Steel Pipe He Bei GuangHao Pipe Fittings Co .,LTD (Cangzhou Sailing Steel Pipe Co., Ltd) , https://www.guanghaofitting.com
Sail launches new 4-model 4 models with a price reduction of 1-1.1 million. At the beginning of the new year of 2004, the flagship brand of China's economical family sedan market, Sail, has won the championship in this sub-market for two consecutive years. At the time of launch, the price/performance ratio of the product was again significantly increased. On January 5th, Shanghai General Motors launched the new series of Sioux 04, adding new luxury configurations, lower prices, and leading price/performance advantages to allow consumers to “Easy to have†Sail. This time, Sioux 04 new products from the original 6 models adjusted to 5 models, including sedan sedan has 3 models, respectively, 1.6 liters hand SL, the new price of 78,800; 04 new models 1.6 liters hand luxury version SLX-MT , The new price of 84,800; 1.6 liters from the row SLX-AT, the new price of 105,800. In addition, Sail SRV leisure cars 2 were 1.6 liters SC, the new price of 94,800; 1.6 liters from the row SCX-AT, the new price of 118,800. The newly introduced five products have increased the maximum configuration of more than 5,000 yuan, while the overall price is lowered by 10,000-11,000 yuan. At the same time, 252 special sales and after-sales service networks throughout the country, service systems and standards that are consistent with Buick Regal and Excelle, and 140,000 customer retention have brought about competitive maintenance experience and costs, and have become Sioux 04 new products. High cost-effective and powerful protection. In 2004, Sail will continue to lead the economical kiosk market with cost-effective products, services and brands, continuing the brand and sales saga. With immediate effect, 252 Buick special sales outlets of Shanghai GM will begin sales. In the sedan 04 new series of sedan models, there are two models have created a "domestic only" record. Among them, the 1.6-liter SLX-MT is a new model with a price of 84,800 yuan. It not only includes the nine standard safety equipments of the Sail series, but also achieves high-end practical configuration such as electronic intelligent anti-theft system, central control door locks, CD stereo, height-adjustable driver seats, electric windows, etc. A 1.6-liter gold displacement fully-equipped economy car. Not only that, it also comes standard with a new dual beige interior, LCD digital odometer, titanium silver control panel and other luxury configuration. The 1.6-liter hand row SL is also the only cost-effective model with a current capacity of 1.6 liters of gold, dual airbags, ABS, four-door side anti-collision steel beams and electronic smart anti-theft systems. The car sets a new price benchmark. In the two SRV RVs of the new Sioux 04 series, the 1.6-liter hand-cranked SC makes the “SRV casual family sedan†enter the price range of 100,000 or less for the first time, and upgrades and adds electric windows and body anti-rubbing strips. Intelligent security remote control door locks and other more than 10 high-end practical configuration. The sedan sedan and SLV-AT and SCX-AT SRV self-driving models also added electric rear windows, electric rearview mirrors with folding/wide-angle functions, and upgraded their ABS systems to the same model. The most advanced technology in the Bosch 5.4, with EBD (Electronic Brake Power Distribution System) function; total value of more than 5,000 yuan, and then break the price record of family cars. In 2003, Sailou was prosperous with sales and sales of 51,679 units. At the beginning of the new year of 2004, Sailou took the leader's momentum and once again held high the price-effective sword to take the initiative. With more complete configuration and closer prices, the consumer "Easy" has Sail. As a market-tested mature brand, Sail owns "Easy Space", "Easy Driving Fun", "Easy Service and Own Experience", making it possible to own 140,000 car owners in just over two years. The price of maintenance and accessories occupies a clear low-cost advantage. The survey shows that Buick's branded after-sales service has risen to one of the three reasons for buying Sail, and 96% of Sailors will recommend Sail to their friends. It can be seen that Sail's after-sales service has become a differentiated advantage in brand competition. . On this New Year’s date, we believe that the new car models, upgrades, and new prices of Sioux 04 will double the enthusiasm of the market.
They are divided into circular, square, rectangular and special-shaped steel tubes according to the section shape.
The material is divided into carbon structural Steel Pipe, low alloy structural steel pipe, alloy steel pipe and composite steel pipe.
It is divided into pipeline, engineering structure, thermal equipment, petrochemical industry, mechanical manufacturing, geological drilling, and high pressure equipment for use.