365足球开户入口

Tianjin Tianguan Pipeline Technology Co., Ltd.
Home page about us Products News Center Engineering case Leave message contact us

product description

contact us

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).
(1) GB3087-82 "Seamless Steel Pipe for Low and Medium Pressure Boilers". Seamless steel pipes are made of a single piece of metal and have no seams on the surface. They are called seamless steel pipes. According to the production method, seamless tubes are divided into hot rolled tubes, cold rolled tubes, cold drawn tubes, extruded tubes, and jacked tubes. Tensile test according to GB / T228-87, hydraulic pressure test according to GB / T241-90, flattening test according to GB / T246-97, flaring test according to GB / T242-97, cold bending test according to GB244-97.

(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.
(2) Uses:

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
G, 20Mn
G, 25MnG; alloy structural steel grade 15Mo
G, 20Mo
G, 12CrMo
G, 15CrMo
G, 12Cr2Mo
G, 12CrMoV
G, 12Cr3MoVSiTiB, etc .; stainless heat-resistant steel commonly used 1Cr18Ni9, 1Cr18Ni11Nb high-pressure boiler steel pipe, in addition to ensuring chemical composition and mechanical properties, water pressure (specifically: pressure) test should be done one by one, should be expanded, flattened test. GB5310 seamless steel pipe is a kind of high-precision steel pipe after cold rolling or cold drawing; full name: cold rolled or cold drawn precision seamless steel pipe. The steel pipe is delivered in a processed state. In addition, the microstructure, grain size, and decarburization (C) layer of the finished steel pipe also have




24-hour consultation hotline:
15522233345
Home about us Products News Center Engineering case Leave message contact us Sitemap xml map
General Manager: Xu Zongtao Phone: 15522233345 Address: B9-1, Trustworthy Industrial Park, Zhongguancun, Beichen District, Tianjin
© 2018 Tianjin Tianguan Pipeline Technology Co., Ltd. All rights reserved
bb赌博网投注 葡京娱乐ag厅 真人皇冠正规赌博 线上真人买彩票网站 正规网上合法赌场 正规真人游戏网赌盘口 真钱现金网盘口 真钱滚球网开户 皇冠正规赌城赌博 真钱现金网平台