PyrgosStainless steel cooling pipeThere are many things to pay attention to in the selection of materials

When the addition of chromium reaches %, the atmospheric corrosion resistance of steel increases significantly, but when the chromium content is higher, although the corrosion resistance can still be improved, it is not obvious. The reason is that when alloying steel with chromium, the type of surface oxide is changed to be similar to that formed on pure chromium metal. This tightly adhered chromium rich oxide protects the surface from further oxidation. This oxide layer is very thin. Through it, you can see the natural luster of the steel surface, which makes the stainless steel have a unique surface. Moreover, if the surface layer is damaged, the steel surface will react with the atmosphere to repair itself, re form this passive film and continue its protective effect.The welding of stainless steel pipe is usually composed of backing welding, filling welding and cover welding. Backing welding of stainless steel pipe is a key link in stainless steel pipe welding, which is not only related to the quality of engineeringPyrgos,The specification and appearance quality shall comply with the provisions of gb- stainless steel seamless steel pipe. The steel pipe is usually ~ m long (indefinite length) hot rolled steel pipe, and the hot-rolled steel pipe is equal to or greater than m. The wall thickness of cold drawn (rolled) steel pipe is . ~ mm, ~ m; the wall thickness is greater than mm, ~ m.The corrosion resistance of stainless steel depends on chromium, but because chromium is an integral part of steel,PyrgosColored stainless steel, the protection is different.San-Vicente-de-Moravia,Stainless steel pipe factory stainless steel products are widely used in hardware products, furniture mechanical structure, mechanical accessories, precision medical instruments, fluid transmission pipelines, such as furniture, machinery, medical oil, natural gas, water gas, steam and other industries.Stainless steel pipe is safe, reliable, hygienic, environmentally friendly, economical and applicable. The successful development of pipeline and new reliable, simple and convenient connection makes it have more irreplaceable advantages of other pipes. It will be used more and more in engineering, and the use will be more and more popular. It has a good prospect.When the stainless steel pipe with solid core welding wire is prefabricated, and the ventilation is very easy. At this time, the blocking plate is usually used to block both sides of the welded junction in the pipe, and the bottom welding is carried out for the protection of ventilation (see Table ), and the outside is blocked with adhesive cloth.

When using this process, the following key points should be paid attention to: during the welding process, the correct included angle between the welding handle,PyrgosStainless steel chain plate mesh belt, welding wire and weldment should be maintained. The ideal caster angle of the welding handle nozzle is & deg; & mdash; & deg;, and the included angle between the welding wire and the weldment surface is & deg; & mdash; & deg;; correct the molten pool temperature, etc. to change the molten pool temperature change the welding speed, so as to ensure Beautiful weld formation (uniform width, no concave, the current shall be slightly larger than that of solid core welding wire and the welding handle shall be slightly adjusted to accelerate the separation of molten iron and molten flux coating, so as to facilitate the observation of molten pool and penetration; when filling the welding wire, it shall be sent to places of molten pool and pressed inward slightly to ensure penetration and prevent concave; during welding, the welding wire shall be regularly sent and taken out, and the welding wire shall always be ensured Under the protection of argon to prevent the end of the welding wire from being oxidized and affect the welding quality; pay attention to the welding quality of the arc and arc stop, and the spot weld shall be polished to & deg; the slope shall be gentle, and pay attention to the defects such as arc pit and shrinkage hole during arc stop.Stainless steel pipes are not easy to rust as long as they are not in particularly polluted places. stainless steel is easy to rust. These two can be tested with magnet. They are not magnetic and can not be absorbed by magnet.Model & mdash; After that, the second widely used steel is mainly used in food industry and surgical equipment. Molybdenum is added to obtain a special corrosion-resistant structure. Because it has better chloride corrosion resistance than it, it is also made & ldquo; Marine Steel & rdquo; To use. SS is usually used in nuclear fuel recovery units. Grade stainless steel generally meets this application grade.how, it is difficult to vent on the inner side, and some sides are easy to be blocked. In this case, water-soluble paper + blocking plate can be used for blocking. That is, the easy to vent and good side can be blocked with blocking plate the difficult to vent and bad blocking plate side can be blocked with water-soluble paper, and the weld on the outer side can be blocked with adhesive tape (see Table ) .When installing and welding the fixed port of stainless steel pipe, it is difficult to vent on the inner side, and some sides are easy to be blocked. In this case, water-soluble paper + blocking plate can be used for blocking. That is, the easy to vent and good side can be blocked with blocking plate, the difficult to vent and bad blocking plate side can be blocked with water-soluble paper, and the weld on the outer side can be blocked with adhesive tape (see Table ) .Martensitic stainless steels typical martensitic stainless steels include Cr ~ Cr and Cr, which have good processing properties. Deep drawing, bending, crimping and welding can be carried out without preheating. Crl does not require preheating before cold deformation, but preheating is required before welding. crlcr is mainly used to make corrosion-resistant structural parts such as steam turbine blades, while crcr is mainly used to make surgical and wear-resistant parts of medical instruments; crl can be used as corrosion-resistant bearings and tools.

Series & mdash; Heat resistant chromium alloy steel.ranking,The product quality advantages of continuous casting billet of stainless steel pipe fittings are mainly reflected in that the non grinding rate of the outer surface of the billet except the head and tail section has reached more than %, and the total surface grinding yield has reached %. In order to achieve this goal, it is necessary to refine the molten steel, achieve low oxygen and sulfur content, do a good job in the metallurgy of the ladle and tundish, accurately determine the molten steel temperature, and realize no oxidation casting, Further reduce the inclusion content.◆ stainless steel and alloy tool steel (C content is expressed in thousandths), such as thousandth of CrNi (i.e., stainless C & LE); .%, such as CrNi, ultra low carbon C & le; .% if the international stainless steel mark, the American Iron and Steel Institute uses three digits to mark various standard grades of malleable stainless steel. Among them, austenitic stainless steel is indicated by numbers of and series, some common austenitic stainless steels are marked with , , and , ferritic stainless steels are marked with and , martensitic stainless steels are marked with and C, duplex (austenitic ferrite), stainless steels, precipitation hardening stainless steels and high alloys with iron content less than % are usually named by patent name or trademark.Model & mdash; The corrosion resistance is the same, and the strength is better because the carbon content is relatively high.Pyrgos,Stainless steel pipes are divided into ordinary carbon steel pipes, high-quality carbon structural steel pipes, alloy structural pipes, alloy steel pipes, bearing steel pipes, coated and coated pipes to save precious metals and meet special requirements. Stainless steel pipes have a wide variety bimetallic composite pipes, different uses, different technical requirements and different production. The outer diameter range of steel pipe currently produced is . & mdash; mm, wall thickness range . ~ mm. In order to distinguish its characteristics, we specialize in providing quality assurance for L stainless steel pipe, s stainless steel pipe and L stainless steel pipe. During the preferential activities, new and old customers are welcome to consult. Steel pipes are usually classified according to the following.Stainless steel and alloy tool steel (C content is expressed in thousandths), such as thousandth of CrNi (i.e. .% C), stainless C & le; .%, such as crnimo.The back is blocked with blocking plate for ventilation protection; Only soluble paper or the combination of soluble paper and blocking plate is used for blocking ventilation protection; Use flux cored wire for backing TIG welding.