HjorringSpecification of stainless steel square pipeApplication knowledge and common sense of dry goods processing

The main way to prevent stress corrosion of austenitic stainless steel is to add SI ~ % and keep the content of N below .% from smelting. In addition, the content of impurities such as P Sb, Bi and as should be reduced as much as possible. In addition, A-F dual phase steel can be selected, which does not correspond to stress corrosion in Cl - and oh - media. The initial micro crack will not continue to expand after encountering ferrite phase, and the ferrite content should be about % .Typical ferritic stainless steels are Crl, Cr and Cr.Hjorring,The surface of stainless steel contains acid, alkali and salt substances (such as alkali water and lime water splashing on the decoration wall), which leads to local corrosion.In the building water supply pipe system, due to the end of the glorious history of galvanized steel pipe, various new plastic pipes and composite pipes have developed rapidly, but various pipes still have some deficiencies in varying degrees, which are far from fully meeting the needs of water supply pipe system and the national requirements for drinking water and related water quality. Therefore, relevant experts: building water supply pipes will eventually return to the era of metal pipes. According to foreign application experience, stainless steel pipe is recognized as one of the pipes with good comprehensive performance in metal pipe.Chalinze,Austenitic stainless steel has good resistance to uniform corrosion, but there are still the following problems in local corrosion resistance: intergranular corrosion of austenitic stainless steel. Austenitic stainless steel will have intergranular corrosion when it is kept warm at ~ ℃ or cooled slowly. The higher the carbon content, the greater the tendency of intergranular corrosion. In addition, which is caused by corrosion of the primary cell. This intergranular corrosion phenomenon also exists in the ferritic stainless steel mentioned above.Model & mdash; Martensite (high strength chromium steel), good wear resistance and poor corrosion resistance.Model & mdash; It has better temperature resistance.

The numbering rules adopt element symbols; Pinyin, open hearth steel: p; Boiling steel: F; Killed steel: B; Class a steel: a; T: special GCr: ball.Check whether the sealing ring of pipe fittings is complete and clean and whether the placement position is correct. If there is dirt, it must be cleaned up. If the sealing ring is damaged, it must be replaced again.In order to ensure the appearance quality of continuous casting slab, select appropriate maintenance slag; During continuous casting, the vibration marks formed on the surface of continuous casting slab due to the vibration of mold shall be; Electromagnetic stirring must be used in continuous casting of ferritic stainless steel pipe fittings.Latest quotation,There are various connection modes of stainless steel pipes. The common types of pipe fittings are compression type, compression type,HjorringStainless steel color oil plate, union type, push type, socket welding type, welding type and derivative series connection mode combining welding with traditional connection. These connection modes have different application ranges according to their principles, but most of them are easy to install, nitrile rubber and EPDM that meet the requirements of national standards. L stainless steel pipe, s stainless steel pipe, L stainless steel pipe and other brand products are provided for a long time. The designated products are complete and the quality is guaranteed, which eliminates the need for useThe petrochemical industry, including the chemical fertilizer industry, has a great demand for stainless steel pipes. Stainless steel pipes are mainly used in this industry, including,Hjorring318 stainless steel plate,HjorringStainless steel sideband, , l, etc., with an outer diameter of about ￠ - ￠ and a wall thickness of about mm-mm (generally medium and low pressure transmission pipes with a specification of more than & phi; mm). The specific application fields are: furnace pipes, material transmission pipes, heat exchanger pipes, etc.Application field: launch the market plan of stainless steel pipe in the target market of new products, such as stainless steel kitchen equipment.

Model & mdash; Add a small amount of sulfur and phosphorus to make it easier to cut.Workshop costWhen improved, suslx (cr Ti it is possible to use it in refrigeration related engineering. Recently, Nb LC) and susl have been applied to frozen shells. Ferritic stainless steel has body centered cubic structure. When the material properties become weaker, sharp cracks will expand rapidly and cause brittleness. Austenitic series stainless steel will not produce brittleness because it has face centered cubic structure. Austrian stainless steel SUSL (cr-ni LC) and SUSL (cr-ni-mo-lc) shows that it still has superior impact characteristics at low temperature. However, pay attention to the precipitation of ferrite or martensite due to processing and the tendency of embrittlement due to sensitized carbide or & sigma; equal heterogeneous precipitation.The width of coiled material is variable, including mm.mm.mm.mm.mm.mm, etc. it can also be divided according to customer requirements. Domestic wce cerium tungsten electrode is used for electrode data. The shape and diameter of the end of cerium tungsten electrode have a great impact on the fluctuation of welding process and weld formation.Hjorring,Continuous casting shall be adopted for stainless steel pipe fittings, so as to improve the comprehensive yield, and cooperate with out of furnace refining, which significantly improves the production efficiency, omits the blank opening process and saves a lot of energy consumption.Production mode stainless steel pipe can be divided into seamless pipe and welded pipe according to the production mode. Seamless steel pipe can be divided into hot-rolled pipe, cold-rolled pipe, cold drawn pipe and pipe. Cold drawing and cold rolling are the secondary processing of steel pipe; Welded pipe is divided into straight seam welded pipe and spiral welded pipe.No solution treatment. The alloy elements do not dissolve into the matrix, resulting in low alloy content and poor corrosion resistance.