Therefore, rhombic tubes, elliptical tubes, hexagonal tubes, octagonal tubes and various cross-section asymmetric tubes. Special shaped pipe is widely used in various structural parts, tools and mechanical parts. Compared with circular pipe special-shaped pipe generally has large moment of inertia and section modulus, and has large bending and torsion resistance, which can greatly reduce the structural weight and save steel.Zlate Moravce,h chemical composition carbon C: Manganese Mn: silicon Si: chromium Cr: nickel Ni: phosphorus P: sulfur s: niobium NB: h stainless steel Name: austenitic stainless steel standard: aisastm model: huns No.: Note: a single value is a high value unless otherwise indicated; when used in some pipe making processes, the nickel content of some models of austenitic stainless steel must be slightly higher than that shown in the table; optional High TA content is .%; high content is .%; high content is the basic characteristics of stainless steel with high temperature strength and high temperature plasticity, excellent oxidation resistance and corrosion resistance, good structural stability, uniform chemical composition, good processing performance and welding performance, high dimensional accuracy and surface quality. causes of rust when brown spots appear on the surface of stainless steel They were greatly surprised: & rdquo; stainless steel will not rust. Rust is not stainless steel. There may be something wrong with the steel quality. & rdquo; in fact this is a one-sided wrong view of the lack of understanding of stainless steel. Stainless steel will also rust under certain conditionsHigh frequency welding high frequency welding: with relatively high power supply, it can reach a higher welding speed for steel pipes with different materials, outer diameter and wall thickness. Compared with argon arc welding, it is more than ten times its high welding speed. Therefore, stainless steel pipes for common use have a higher consumption rate. Due to the high speed of high frequency welding, it is difficult to remove burrs in welded pipes. At present, high frequency welding Welded stainless steel pipe can not be borne by chemical and nuclear industries, which is also one of the reasons.Hagonoy,Typical ferritic stainless steels are Crl, Cr and Cr.Stainless steel pipe, which was consumed and used at the end of the s, is a rebirth group emerging in today's pipe range. It has been widely used in the construction of water supply and direct drinking water pipelines. Stainless steel pipe is durable and has been recognized by the engineering community, so as to facilitate further implementation. In order to promote stainless steel pipe, since the s, China has started to reduce wall thickness and cost; High diameter to wall ratio and high precision & rdquo; The technical effect of stainless steel pipe makes the stainless steel pipe lose its application and expand quickly. There are various connection modes of stainless steel pipes. The rare types of pipe fittings include contraction type, union type, push type push thread type, socket welding type, union flange connection, welding type and derivative series connection mode combining welding with traditional connection. These connection methods have different application ranges according to their principles, but most of them are convenient, firm and reliable. The sealing ring or gasket materials used for connection are mostly silicone rubber, nitrile rubber and EPDM that meet the requirements of national specifications, which eliminates the worries of users. In the construction of water supply pipe system, due to the glorious history of galvanized steel pipe, all kinds of new plastic pipes and composite pipes have been lost and developed rapidly, but they are far from fully meeting the needs of water supply pipe system and the national requirements for drinking water and related water quality. In direct drinking water, stainless steel pipe system is undoubtedly one of the best. At present,Zlate Moravce201 stainless steel pipe, hotels and public places at the international level have been equipped or are equipped with direct drinking water pipelines. In many cases, stainless steel pipe has more advantages, especially the stainless steel pipe with wall thickness of only . ~ mm has the characteristics of safety, reliability, sanitation, environmental protection, economy and applicability in high-quality drinking water system, hot water system and water supply system that puts safety and sanitation first. It has been proved by engineering theories at home and abroad that it is not only one of the new, energy-saving and environmental protection pipes with good comprehensive function of water supply, but also a very competitive water supply pipe, which will play an unparalleled role in improving water quality and improving people's living standard.Combined steel and spring steel, such as CrMnTi simn, (C content is expressed in ten thousandths).

With the implementation of China's reform and opening up, the national economy has achieved rapid growth, and a large number of urban houses, public buildings and tourism facilities have been built, which puts forward new requirements for hot water supply and domestic water supply. In particular, people pay more and more attention to the problem of water quality, and the requirements are also increasing. Galvanized steel pipe, a common pipe, will gradually withdraw from the historical stage under the influence of relevant countries because of its corrosivity. Plastic pipe, composite pipe and copper pipe have become common pipes in the pipeline system. However, under certain circumstances, stainless steel pipe has more advantages, especially the stainless steel pipe with wall thickness of only . ~ mm. In high-quality drinking water system hot water system and water supply system that puts safety and sanitation first, it has the characteristics of safety, reliability, sanitation, environmental protection, economy and applicability. It has been proved by engineering practice at home and abroad that it is one of the new, energy-saving and environmental protection pipes with good comprehensive performance of water supply system. It is also a very competitive water supply pipe, which will play an incomparable role in improving water quality and people's living standards.In order to obtain seamless pipes with smaller size and better quality, cold rolling, cold drawing or a combination of both must be used. Cold rolling is usually carried out on a two high mill. The steel pipe is rolled in an annular pass composed of variable section circular groove and fixed conical plug. Cold drawing is usually carried out on a single chain or double chain cold drawing machine of . ~ t.Construction materials shall be prepared and delivered to the site according to the data scheme, and shall be supplied according to the scheme.index,There are mechanical, chemical and electrochemical methods to remove the scale of stainless steel pipe. Due to the complexity of the composition of the scale of stainless steel pipe, it is not easy to remove the scale on the surface and make the surface highly clear and flat. Generally, the removal of the scale of stainless steel pipe should be carried out in two steps, the first step is pretreatment and the second step is ash removal.. 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.In the interior decoration project, the proportion of water pipes is very small, whether it is data consumption or price. However, once the water pipes show achievements, the results will be very serious. Therefore, it is extremely important to choose water pipes with reliable quality, high volatility, convenient maintenance, health and environmental protection. With the development of the national economy and the progress of people's living standards, people's requirements for domestic water pay more and more attention to health and environmental protection. A good water source escort pipeline has become a careful choice. Water pipes are generally experienced in lead pipes & rarr; Copper pipe & rarr; Iron pipe & rarr; Galvanized iron pipe → Plastic pipe & rarr; Development process of stainless steel pipe. It has become a trend in the world to select high-quality stainless steel materials as water supply pipes. The material indicates that in Germany, more than % of residents choose stainless steel water pipes; In Japan, more than % of households in Tokyo have adopted stainless steel water pipes; In Australia, it has begun to change other pipes to stainless steel pipes; In the United States,Zlate MoravceStainless steel tape, the water pipes of five-star hotels in Las Vegas are all made of stainless steel. Since the beginning of the st century, due to the progress of living standards, more than % of residents in China need water pipes to meet their needs of high-quality life. Therefore, high-quality stainless steel materials move from tableware to household water pipes. It has become a trend to select high-quality stainless steel pipes in tooling or home decoration projects. Stainless steel water pipes and stainless steel pipe fittings will become an indispensable part of the building materials market in the future. Stainless steel material is a recognized health material that can be implanted. The manufacture of water pipes based on stainless steel has a long history in developed countries. Stainless steel pipe has gradually become a new choice of water supply pipe with the characteristics of safety, sanitation, environmental protection, economy and applicability, and has become the current world trend and development direction. Stainless steel water pipe is called the real green pipe in the st century. With the gradual standardization of stainless steel pipe industry, it can be predicted that the consumption technology and connection technology of stainless steel pipe will also slow down to standardization and become more and more perfect. The development of stainless steel pipe technology will not only create a favorable condition for health, environmental protection and sanitation for national domestic water, coloring solution temperature the chemical coloring of stainless steel industrial pipe was carried out. The effects of pretreatment process, mass concentration and coloring time on the color film of stainless steel industrial pipe were discussed. Through a large number of experiments, a good formula and process range of coloring solution are obtained. With the increase of temperature and time, blue, gold, purplish red and green. After curing and sealing treatment the colored film of stainless steel industrial pipe has more uniform surface color, good reproducibility, and significantly improved wear resistance and corrosion resistance.Installation materials,Decorative stainless steel pipe: usually the outer wall is relatively bright, so its name is considered. Decorative stainless steel pipe is used for decorative purposes. The stainless steel pipe for general decorative purposes is relatively thin. Because it is different from the manufacturing process of stainless steel product pipe, the price also varies greatly. The general production process of decorative stainless steel pipe is ordinary welded stainless steel pipe. Guangdong stainless steel product pipe stainless steel product pipe: generally, the surface of stainless steel product pipe is also a bright surface, stainless steel product pipe belongs to the purpose of stainless steel products, because the outer diameter size, mechanical properties, acid, alkali and corrosion resistance of stainless steel pipe are relatively good, Therefore, stainless steel pipes are generally used as anti-corrosion materials or hardware products in large-scale production enterprises. The production process of stainless steel pipes is one-time forming, and nitrogen protection is also added during welding.The length of tungsten electrode protruding from the gas nozzle is preferably ~ mm. In places with poor shielding such as fillet welding, it is ~ mm, and in places with deep groove, it is ~ mm. The distance from the nozzle to the working is generally no more than mm.Human factors are also one of the causes of product oxidation that some consumers often encounter when using stainless steel products. Some consumers operate improperly in product use and maintenance, especially some stainless steel pipe products used in food and chemical equipment industry. For the artificially generated oxidation of steel products they should have correct product use knowledge and Reasonable and effective maintenance shall be carried out regularly to reduce oxidation caused by improper use.Zlate Moravce,Model & mdash; The corrosion resistance is the same, and the strength is better because the carbon content is relatively high.At the same time, the Ministry of construction attaches great importance to the application of stainless steel pipes. The industry standard of stainless steel water pipe was issued and implemented in . The Ministry of construction has issued documents on relevant technical specifications and installation sets of pipeline engineering,Zlate MoravceStainless steel screen belt, which are being prepared by Tongji University. All kinds of stainless steel plate, stainless steel coil, stainless steel belt and stainless steel pipe are qualified. Welcome to telephone inquiry and sincerely invite cooperation! At present, there are stainless steel pipes in Sichuan, Guangdong, Jiangsu and other places, and the products have become mature. Therefore, the time for application has come.Stainless steel has two classifications: one is divided into chromium stainless steel and chromium nickel stainless steel according to the characteristics of alloy elements; The other is divided into m stainless steel, f stainless steel, a stainless steel and A-F duplex stainless steel according to the microstructure of steel in normalized state.