High pressure boiler steel tube

High pressure boiler tube knowledge - high pressure boiler tube: mainly used in the manufacture of high pressure and over pressure steam boiler pipes, etc. With high quality carbon structural steel, alloy steel and stainless heat resistant steel seamless steel tube, the boiler tube by the party under high temperature and high pressure pipe and works in high temperature flue gas and steam will happen under the action of oxidation and corrosion, so the steel pipe with high rupture strength, high oxidation resistance, and have good organizational stability, using steel grade are: high quality carbon structural steel grade 20 g, 20 MNG, 25 MNG; 15 mog, alloy structural steel steel grade 20 crmog mog, 12, 15 crmog, 12 cr2mog, 12 crmovg, 12 cr3movsitib, etc; Heat resistant steel rust cr18ni9, 1 cr18ni11nb commonly used high pressure boiler tube, in addition to ensure that the chemical composition and mechanical properties to do hydrostatic test by the root, flaring, flattening test. Steel tube to heat treatment state delivery. In addition, the microstructure and grain size of finished steel pipe, the decarburization layer also has certain requirements. Geological drilling and oil drilling with seamless steel tube; Proven underground strata structure and groundwater, oil, gas and mineral resources, make use of the rig drilling Wells. Mining more from drilling, oil and gas geological drilling in oil drilling in seamless steel pipe is the main drilling equipment, mainly including core tube, core tube, casing, drill pipe, etc. Due to the drilling pipe to go deep into the thousands of meters formation depth work, working conditions is very complex, drill pipe under pull, pressure, bending, torsion and uneven impact load stress, but also by mud, rocks and wear, therefore, requires tubing must have sufficient strength, hardness, wear resistance and impact toughness, steel pipe steel with "dz" pinyin "(geology) plus number one on behalf of the steel yield point, said common steel grade dz45 MNB 45, 50 mn; Dz50 40 mn2, 40 mn2si; Dz55 40 mn2mo, 40 MNVB; 40 mnmob dz60, dz65 27 mnmovb. Steel pipe is a heat treatment state delivery. Petroleum cracking tube: used in oil refinery furnace tube, seamless tube heat exchanger tube and pipe. Commonly used high quality carbon steel (10, 20), alloy steel (12 crmo, 15 crmo), heat resistant steel (12 cr2mo, 15 cr5mo), stainless steel cr18ni9 (1, 1 cr18ni9ti) manufacturing. Steel pipe except to the chemical composition and various mechanical properties, and ensure that the water pressure, flattening, flaring test, and the surface quality and nondestructive inspection. Steel pipe in heat treatment state delivery. Stainless steel pipe: with all kinds of stainless steel hot rolling and cold rolling stainless steel tube, pipe is widely used in petroleum, chemical industry equipment and various USES of the stainless steel structural parts, in addition to ensure that the chemical composition and mechanical properties, all steel pipe is used as the fluid under pressure to keep the water pressure test. All kinds of special steel pipe to guarantee conditions by the regulation.