|
|
小贴士：发图文帖,图片宽度请不要超过900像素，以保证最佳显示效果！
Seamless steel tube
I was an American Los Angeles, Jack, like making friends with you, contact msn: jack@hotmail.com
Seamless steel tube categories: hot-rolled and cold-rolled seamless steel points, three types of cold drawn seamless steel pipe. Hot-rolled seamless steel pipe sub-normal, low, medium pressure boiler steel pipes, high-pressure boiler steel pipe, steel pipe, stainless steel pipe, oil cracking pipe, steel pipe and other pipe and so on geology.
In addition to sub-normal cold-rolled seamless steel pipes, low and medium pressure boiler steel pipes, high-pressure boiler steel pipe, steel pipe, stainless steel pipe, petroleum cracking tubes, other steel pipes, but also includes thin-walled carbon steel, alloy thin-walled steel pipe, stainless steel thin wall steel pipe, shaped steel tube. Hot-rolled seamless pipe diameter typically greater than 32mm, wall thickness 2.5-75mm, cold-rolled seamless steel pipe at Trail can go to 6mm, wall thickness can be 0.25mm, outer diameter thin-walled tube can be 5mm, wall thickness less than 0.25 mm, cold rolled dimensional accuracy than the high, cold drawn seamless steel pipe
Tends to be used seamless steel pipe: is 10 #, 20 #, 30 #, 35 #, 45 # and other high-quality carbon structural steel 16Mn, 5MnV low-alloy structural steel or 40Cr, 30CrMnSi, 45Mn2, 40MnB other alloy steel hot-rolled or cold rolled into the. 10,20 and other low-carbon steel seamless pipe manufacturing is mainly used for liquid pipelines. 45 #, 40Cr, etc. made of medium carbon steel seamless pipe used to make machine parts, such as cars, tractors force components. General seamless steel pipes to ensure the strength and flattening test. Hot-rolled steel with hot-rolled state or heat treatment delivery; cold-rolling to heat treatment delivery.
Low and medium pressure boiler seamless steel pipe: for the manufacture of a variety of low and medium pressure boiler, superheated steam pipes, boiling water pipe, water-wall tube and superheated steam locomotive boiler pipes, opium pipe, small pipe and pipe arch bricks. With high-quality carbon structural steel hot-rolled or cold-rolled (call) seamless. No. 10,20 mainly used high-quality carbon structural steel, in addition to chemical composition and mechanical properties to ensure things do pressure test, curling, expansion port, squash and other tests. To the state of delivery hot rolled, cold-rolled (allocated) to heat treatment delivery.
High-pressure boiler seamless steel pipe: mainly used to manufacture high pressure steam boiler and above pipeline, etc. with high quality carbon structural steel, alloy structural steel and heat-resistant stainless steel seamless steel tubes, the boiler tubes are always in high temperature and high pressure work, pipe smoke and water vapor at high temperature under the effect of oxidation and corrosion will occur, thus requiring a durable steel pipe with high strength, high oxidation resistance, and has good organizational stability, use of steel are: high-quality carbon Su structural steel steel with 20G, 20MnG, 25MnG; alloy structural steel steel 15MoG, 20MoG, 12CrMoG, 15CrMoG, 12Cr2MoG, 12CrMoVG, 12Cr3MoVSiTiB, etc.; a rusty heat-resistant steel used 1Cr18Ni9, 1Cr18Ni11Nb Apart from ensuring high-pressure boiler tubes chemical composition and mechanical performance, the hydraulic pressure test should be done by the root, to make Flaring, flattening test. Steel heat treatment to state delivery. In addition, finished steel microstructure, grain size, there are certain requirements decarburization layer.
Geological drilling and oil drilling seamless steel pipe: In order to investigate underground rock, underground water, oil, gas and mineral resources, the use of drilling wells. Oil, natural gas and even less from wells, geological drilling seamless steel tubes for oil drilling is the main drilling equipment, mainly outside the core tube, core tube, casing, drill pipe and so on. As the drilling pipe and reach out to thousands of meters deep stratum of work, working conditions is extremely complex, drill pipe to withstand tensile, compressive, bending, torsion and non-equilibrium impact loading such as stress, but also by the mud, rock wear, therefore, required pipe must have sufficient strength, hardness, wear resistance and impact toughness of steel pipe with the "DZ" (geological Hanyu Pinyin prefix) plus the number one on behalf of steel yield point that the commonly used steel has DZ45 of 45MnB, 50Mn; DZ50 of 40Mn2, 40Mn2Si; DZ55 the 40Mn2Mo, 40MnVB; DZ60 the 40MnMoB, DZ65 the 27MnMoVB. Steel is heat treatment to state delivery.
form: stainless steel tube |
|
发表于 2009-9-24 17:38
