Fluid or gas conveying pipe is a hollow section, from head to tail without weld.Steel pipe has hollow section, which is widely used for transporting oil, natural gas, gas, water and some solid materials.
Steel pipe and round steel and other solid steel, bending and torsional strength at the same weight, is an economic section of steel, widely used in the manufacture of structural and mechanical parts, such as oil drill pipe, automobile shaft, bicycle frame and construction of steel scaffolding.Using steel tube to manufacture ring parts, can improve the material utilization rate, simplify the manufacturing process, save materials and processing time, such as rolling bearing ring, jack sleeve, etc., has been widely used to manufacture steel tube.
Steel pipe is also an indispensable material for all kinds of conventional weapons.Steel pipe can be divided into circular pipe and special-shaped pipe according to the shape of cross section area.Since the circle has the largest area with the same circumference, circular tubes can carry more fluid.In addition, the ring section under internal or external radial pressure, the force is more uniform, therefore, most of the steel pipe is circular.
Production and manufacturing method for fluid conveying pipe
(1) general boiler tube use temperature in 450℃ below, domestic tube mainly with 10, 20 carbon steel hot rolling tube or cold-drawn tube manufacturing.
(2) the use of high pressure boiler tube often in high temperature and high pressure conditions, tube in high temperature smoke and steam under the action of oxidation and corrosion.Steel tube is required to have high endurance strength, high oxidation resistance and corrosion resistance, and good structure stability.
(1) the general boiler tube is mainly used to make water cooling wall tube, boiling water tube, superheated steam tube, locomotive boiler with superheated steam tube, large, small smoke tube and arch brick tube.
(2) high pressure boiler tube is mainly used to manufacture high pressure and ultra-high pressure boiler superheater tube, reheater tube, guide tube, main steam tube.
However, the round tube also has certain limitations, such as under the condition of plane bending, the round tube is not as strong as the square, rectangular tube bending strength, some agricultural machinery framework, steel wood furniture on the high-pressure boiler.
Post time: May-12-2021