Hot-rolled Seamless Steel Pipe
Standard:API, ASTM, BS
Standard2:API 5CT, API 5L, ASTM A106-2006, ASTM A1020-2002, ANSI A210-1996, ASTM A213M-2001, ANSI A182-2001, ASME B36.10M-2004, ASTM A199, BS 3059-2
Grade Group:Mn-V alloy, Q195-Q345, ST35-ST52
Grade:15MnV, Q235, Q345, Q195, Q215, St37-2, St35.4, ST35
Thickness:2 - 30 mm
Outer Diameter(Round):12 - 920 mm
Surface Treatment:hot rolled
Special Pipe:API Pipe
Alloy Or Not:Non-alloy
Secondary Or Not:Non-secondary
Product name:Hot-rolled seamless steel pipes building materials seamless pipe
Keyword:Mill Test Certificate Steel Pipe
Hot rolled seamless steel tube: hot rolling is relative to cold rolling, cold rolling is under the recrystallization temperature, and hot rolling is above the recrystallization temperature.
Hot-rolled seamless tube can destroy the cast structure of steel ingot, refine the grain of steel and eliminate the defects of microstructure, so that the microstructure of steel can be compacts and the mechanical properties can be improved.The improvement is mainly reflected in the direction of rolling so that the steel is no longer isotropic to some extent.The bubbles, cracks and looseness formed during pouring can also be welded under high temperature and pressure.
Hot-rolled seamless steel tubes are divided into general steel tubes, low and medium pressure boiler steel tubes, high pressure boiler steel tubes, alloy steel tubes, stainless steel tubes, petroleum cracking tubes, geological steel tubes and other steel tubes.
Cold-rolled (dial-up) seamless steel tube in addition to the general steel tube, low medium pressure boiler steel tube, high pressure boiler steel tube, alloy steel tube, stainless steel tube, petroleum cracking tube, other steel tubes, also including carbon thin wall steel tube, alloy thin wall steel tube, stainless steel thin wall steel tube, special-shaped steel tube.The outer diameter of hot-rolled seamless tube is generally larger than 32mm and the wall thickness is 2.5-75mm. The outer diameter of cold-rolled seamless steel tube can reach 6mm and the wall thickness can reach 0.25mm. The outer diameter of thin-walled tube can reach 5mm and the wall thickness is less than 0.25mm.
Generally used seamless steel tube: it is made of 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 alloy steel hot rolled or cold rolled.The seamless pipe made of low carbon steel is mainly used for fluid conveying pipe.45, 40Cr and other medium carbon steel made of seamless pipe to manufacture mechanical parts, such as the car, tractor force parts.General use of seamless steel tube to ensure the strength and flattening test.Hot-rolled steel tubes are delivered in hot-rolled or heat-treated condition;Cold rolling is delivered in heat treatment condition.
1. Construction: more underground pipeline transportation, groundwater extraction during building construction, boiler hot water transportation, etc.
2. Machining, bearing sleeve, machining machinery parts, etc.
3. Electrical: gas transmission, water power generation fluid pipeline.
4. Wind power plant anti-static tube, etc.
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