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High pressure alloy tube

High pressure alloy pipe is a kind of pipe that can withstand pressure, the use of this pipe to transport liquid, gas, it has many kinds, steel pipe, copper pipe, stainless steel pipe and so on.

High pressure alloy pipe is a kind of pipe that can be pressurized, using this pipe to transport liquid, there are many kinds of steel pipe, copper pipe, stainless steel pipe, and other.

High pressure alloy tube: It is mainly used to manufacture high-quality carbon structural steel, alloy structural steel and stainless heat-resistant steel seamless steel pipes for steam boiler pipes with high pressure and above pressure. These boiler pipes work under high temperature and high pressure, and the pipes will also undergo oxidation and corrosion under the action of high temperature flue gas and water steam, so the pipes are required to have high durable strength and high oxidation resistance. And has good organizational stability, the use of steel numbers are: high-quality carbon structural steel numbers 20G, 20MnG, 25MnG; Alloy structural steel No. 15MoG, 20MoG, 12CrMoG, 15CrMoG, 12Cr2MoG, 12CrMoVG, 12Cr3MoVSiTiB, etc. Rust heat resistant steel commonly used 1Cr18Ni9, 1Cr18Ni11Nb high pressure pipe in addition to ensure chemical composition and mechanical properties, to do one by one hydraulic test, to do flaring, flattening test. Steel pipes are delivered in heat-treated condition. In addition, there are also certain requirements for the microstructure, grain size and decarburization layer of the finished steel pipe.

Seamless steel pipe for geological drilling and oil drilling control; In order to explore the structure of underground rock formations, groundwater, oil, natural gas and mineral resources, drilling RIGS are used. Oil and natural gas mining can not be separated from drilling, geological drilling control of oil drilling seamless steel pipe is the main drilling equipment, mainly including core outer pipe, core inner pipe, casing, drill pipe and so on. Because the drilling pipe has to go deep into the depth of several thousand meters, the working conditions are extremely complex, the drill pipe is subjected to stress such as tension, pressure, bending, torsion and unbalanced impact load, but also by mud, rock wear, therefore, the pipe must have sufficient strength, hardness, wear resistance and impact toughness. Steel pipe with "DZ" (geological Chinese pinyin prefix) plus a number to represent the steel yield point, the commonly used steel number DZ45 45MnB, 50Mn; 40Mn2, 40Mn2Si of DZ50; DZ55 40Mn2Mo, 40MnVB; 40MnMoB of DZ60, 27MnMoVB of DZ65.

Steel pipes are delivered in heat-treated condition. Petroleum cracking pipe: Seamless pipe for furnace tubes, heat exchanger tubes and pipelines used in petroleum refineries.

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 the chemical composition and various mechanical properties of the steel pipe, it is necessary to ensure water pressure, flattening, flaring and other tests, as well as surface quality and non-destructive inspection. Steel pipes are delivered under heat treatment.

Stainless steel pipe: with a variety of stainless steel hot rolled, cold rolled stainless steel pipe, widely used in petroleum, chemical equipment pipelines and various uses of stainless steel structural parts, in addition to ensure chemical composition and mechanical properties, where used to withstand fluid pressure to ensure that the hydraulic test qualified. All kinds of special steel pipes should be guaranteed according to the specified conditions

The main production process of high pressure alloy tube: tube billet and billet heating, tube billet perforation, steel pipe extension.

High-pressure alloy tube rolling, steel pipe sizing and reducing, steel pipe cooling and finishing or can be said to be the heating perforation of steel blank hot tying pickling cold drawing carbon burning cutting head spray label packaging product A seamless steel pipe manufacturing method, which is characterized by: A mandrel seamless tube mill with a plurality of rolls is set up, and a plurality of mandrel seamless tube mills are continuously configured in different rolling directions. After rolling seamless steel tubes on such a manufacturing line, the wall thickness of the rolled steel tubes in the circumference direction is measured at multiple points. At least the positions of the two ends of each shaft of the roll on the final roll stand of the mandrel seamless tube mill are controlled separately in order to minimize the uneven wall thickness.

General alloy pipe, high pressure alloy pipe referred to as seamless steel pipe, with ordinary carbon steel, high quality carbon steel, ordinary low alloy steel and alloy structural steel manufacturing, for the production of liquid pipeline or the production of structures, parts.

The high-pressure pipe is supplied according to the outer diameter and wall thickness, and there are various wall thicknesses under the same outer diameter, and the high-pressure pipe has a large pressure range.

Usually, the length of the steel pipe is 3-12.5m for hot-rolled pipe and 1.5-9m for cold-drawn (rolled) pipe.


Zhishang Steel Co., Ltd

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