304 / 316 Seamless Stainless Steel Honed Tube

Product Detail

Seamless Stainless Steel Pipes introduction:
Seamless steel tubes are made of ingots or billets made by piercing and are then made by hot rolling, cold rolling or cold casting. Specifications for seamless steel tubes are expressed in millimeters of outer diameter * wall thickness.




Seamless Honed Tube type:
Seamless steel pipe, hot-rolled and cold-rolled (DIAL) seamless steel pipe two categories.

Hot rolled seamless steel tubes are divided into ordinary steel tubes, low and medium pressure boiler tubes, high pressure boiler tubes, alloy steel tubes, stainless steel pipes, oil cracking pipes, geological steel pipes and other steel pipes, etc. Cold rolled seamless steel pipe (DIAL) in general, steel pipe for low and medium pressure boiler tube, high-pressure boiler steel pipe, alloy steel pipe, stainless steel pipe, oil cracking tube and other steel tube, including carbon thin-walled steel, alloy thin-walled steel, stainless steel, thin steel tube. The diameter of hot-rolled seamless tube is generally greater than 32mm, the wall thickness is 2.5-75mm. The diameter of cold rolled seamless steel tube can reach 6mm, the wall thickness can reach 0.25mm, the outer diameter of thin-wall pipe can be 5mm, the wall thickness is less than 0.25mm, and the cold rolling dimension is higher than that of hot rolling.

General use seamless steel pipe is with 10, 20, 30, 35, 45 and other high-quality carbon steel, 16Mn, 5MnV and other low-alloy structural steel or 40Cr, 30CrMnSi, 45Mn2, 40MnB and other composite steel hot-rolled or cold rolled. Seamless tubes made of low carbon steel, such as 10, 20, are mainly used for fluid delivery pipelines. 45. Seamless tubes made of medium carbon steel such as 40Cr, used for the manufacture of mechanical parts, such as parts of automobiles and tractors. General use of seamless steel pipe to ensure the strength and flattening test. Hot rolled steel tubes are delivered in hot rolling or heat treated conditions. Cold rolled is delivered in hot and heat treated conditions.
Low and medium pressure boiler seamless pipe: used in the manufacture of a variety of low and medium pressure boiler, superheated steam pipe, water pipe, superheated steam pipe, water wall tube and locomotive boiler flue tube, pipe and pipe arch bricks. Hot rolled or cold rolled (seamless) steel tubes of high quality carbon structural steel. Mainly made of 10 and No. 20 steel, in addition to ensuring chemical composition and mechanical properties, to do hydraulic tests, curling, expansion, flattening and other tests. Hot rolled in hot rolled state, cold rolled (CAST) delivered in heat treated state.

High pressure boiler tube: mainly used for the manufacture of high and higher pressure steam boiler pipes with high quality carbon steel, alloy steel and stainless steel seamless steel tubes, the boiler tube by the CPC in high temperature and high pressure work, the pipe will occur oxidation and corrosion in high temperature flue gas and water vapor, so the steel pipe has antioxidant properties, high strength, and has good organizational stability, the grades are: high quality carbon steel steel with 20G, 20MnG, 25MnG; 15MoG, 20MoG steel, alloy structural steel, 12CrMoG, 15CrMoG, 12Cr2MoG, 12CrMoVG, 12Cr3MoVSiTiB and so on; there is in addition to ensure the chemical composition and mechanical properties of outer rust heat resistant steel commonly used 1Cr18Ni9, 1Cr18Ni11Nb high pressure boiler tube, one by one to do pressure test, will be expanding and flattening test. The pipe is delivered in heat treatment. In addition, the microstructure, grain size and decarburization of the finished steel tube are also required.

A seamless steel pipe for geological drilling and oil drilling control; drilling rigs are used to explore underground rock formations, underground water, oil, natural gas and mineral resources. Oil and gas production can not be separated from drilling, geological drilling, drilling, seamless steel pipe is the main drilling equipment, including core, outer pipe, core pipe, casing, drill pipe, etc.. Because the pipe to thousands of meters depth by drilling, working condition is very complicated, the drill pipe to bear tension and compression, bending, torsion and uneven impact load stress, but also by the mud and rock wear, therefore, must have required pipe strength and hardness, wear resistance and impact toughness of steel tube enough. Steel with "DZ" (Geological Pinyin prefix) plus the number of representative steel yield point, commonly used steel with DZ45 45MnB, DZ50 40Mn2, 50Mn; 40Mn2Si; DZ55 40Mn2Mo, DZ60 40MnMoB, DZ65 40MnVB; 27MnMoVB. The tubes are delivered in heat treatment.

Petroleum cracking pipe: seamless tubes used in petroleum refineries for furnace tubes, heat exchangers, tubes, and pipes. Commonly used high-quality carbon steel (10, 20), alloy steel (12CrMo, 15CrMo), heat-resistant steel (12Cr2Mo, 15Cr5Mo), stainless steel (1Cr18Ni9, 1Cr18Ni9Ti) manufacturing. In addition to chemical composition and mechanical properties, the steel pipe should be tested for water pressure, flattening and expanding, as well as surface quality and nondestructive testing. The steel pipe is delivered under heat treatment.




Stainless Steel Honed Tubes application:
Stainless steel tube with various kinds of stainless steel, cold-rolled stainless steel tube, stainless steel structural parts are widely used in petroleum, chemical equipment and pipeline for various purposes, should guarantee the chemical composition and mechanical properties, who used steel to withstand the pressure to ensure the water pressure test. All kinds of special steel pipes should be guaranteed according to the regulations.