天津市北辰区中关村可信产业园B9-1 Address: B9-1, Trustworthy Industrial Park, Zhongguancun, Beichen District, Tianjin
15522233345 Mobile: 15522233345
许宗涛 Contact: Xu Zongtao
Seamless steel tube 3
Product information and quotation for the same industry of 20G high pressure boiler tube (qa) c What does it mean High-quality carbon steel, alloy steel and stainless heat-resistant steel seamless steel tube for boiler heating surface. This type of steel has a large output and is widely used. Generally, it is rolled (forged) into round, square, flat and other profiles, plates and seamless steel pipes. It is mainly used to manufacture general structure (structure) and machinery structure parts and components, as well as architecture (Architecture) structural components and pipelines for transporting fluids. Depending on use requirements, it may be used after heat treatment (normalization or tempering).
(2) GB5310-95 "Seamless Steel Pipe for High Pressure Boilers". The tensile test, hydraulic pressure (specifically: pressure) test and flattening test are the same as those specified in GB3087-82; the impact test is GB229-94, the flaring test is GB / T242-97, and the grain size test is YB / T5148-93 ; Microstructure inspection according to GB13298-91, decarburization layer inspection according to GB224-87, ultrasonic inspection according to GB / T5777-96.
(3) The physical performance inspection and indicators of imported boilers are carried out according to the relevant standards stipulated in the contract. GB6479 seamless steel pipe is mainly used for the production of pneumatic or hydraulic components, such as cylinders or oil cylinders, are used seamless pipes. The chemical composition of precision seamless steel pipe includes carbon C, silicon Si, manganese Mn, sulfur S, phosphorus P, and chromium Cr. Boiler tube is divided into general boiler boiler steel tube and high pressure boiler boiler steel tube according to the high temperature performance. Whether general boiler steel pipe or high-pressure boiler steel pipe can be divided into various steel pipes according to their application requirements.
①General boiler tubes are mainly used for manufacturing water-cooled wall tubes, boiling water tubes, superheated steam tubes, superheated steam tubes for locomotive boilers, large and small smoke pipes, and arch brick pipes.
② High-pressure boiler steel pipes are mainly used to manufacture superheater tubes, reheater tubes, air guide tubes, and main steam tubes for high-pressure and ultra-high-pressure boilers. High-pressure boiler steel pipes are mainly used to manufacture high-quality carbon (C) structural steel, alloy structural steel and stainless heat-resistant steel seamless steel pipes for high-pressure and above pressure steam boiler pipes. Under high temperature (high temperature) and high pressure (job), the tube will also oxidize and corrode under the action of high temperature flue gas and water vapor (paraphrase: refers to decay, disappearance, erosion, etc.) Steel pipes are required to have high endurance strength, high oxidation resistance (anti-oxidation free radical) performance, and good structural stability (explanation: stable and stable; no change). The steel grades are: high-quality carbon structural steel steel grades. 20