201 stainless 
Stainless steeSpcespce & mdash; & mdash; refers to cold-rolled carbon steel sheet and strip for deep drawing, equivalent to China 08Al (52) deep drawing steel. If it is necessary to ensure non aging property, add n at the end of the brand as spcen. Quenching and tempering code of cold-rolled carbon steel sheet and strip: annealing status is a, standard quenching and tempering is s, 1 / 8 hard is 1 / 4, hard is 1 / 2, hard is 1. Surface processing code: dull finish rolling is D, bright finish rolling is B. spcc-sd represents cold-rolled carbon sheet generally used for standard quenching and tempering and matt finish rolling. Another example is spcct-sb It refers to cold-rolled carbon sheet with standard quenching and tempering and bright processing and required to ensure mechanical properties.
In polluted air (such as atmosphere containing a large amount of sulfide, carbon oxide and nitrogen oxide), acetic acid liquid points will be formed, which will lead to chemical corrosion.
.After molten steel casting, stainless steel pipe fittings generally adopt the same vertical, vertical bending or arc continuous caster as carbon steel. The refined molten steel is poured into the ladle, the ladle to be poured is transferred above the tundish mouth through the rotary table, and then the molten steel is tundish through the long nozzle. The molten steel in tundish enters the mold through the submerged nozzle for forming, condensation and continuous downward movement.
Stainless steel water supply pipe is a healthy, economic, sanitary and energy-saving water pipe, whether it is for household or large engineering buildings
.Low temperature embrittlement --- in low temperature environment, the deformation energy is small. In the low temperature environment, the phenomenon that the elongation and area shrinkage decrease is called low temperature embrittlement. Most of them are produced on the body centered cubic structure of ferrite series.
Someone asked whether the stainless steel pipe was rusted and caused toxic problems?
At low temperature, the quality of professional stainless steel plate, coil, strip and tube is guaranteed. The company is professional timely and cost-effective. It has become the first choice brand for many wire products. Welcome to buy! Ferritic stainless steel tubes have low-temperature brittleness like carbon steel, while austenitic steel does not. Therefore, ferritic or martensitic stainless steels have low-temperature brittleness Austenitic stainless steel or nickel base alloy does not show low temperature brittleness. Sus410 (13Cr), SUS430 of ferritic stainless steel pipe (18cr) and others show a sharp drop in impact value at low temperature. Therefore, it is necessary to pay special attention when using at low temperature. As a way to improve the impact toughness of ferritic series stainless steel, when the embrittlement temperature is improved in the range of - 50 ℃ to - 100 ℃, it is possible to use it in freezing related projects Sus430lx (18cr Ti, Nb LC) and sus436l (18cr Mo Ti, Nb LC) have been applied to frozen shells. Ferritic stainless steel has a body centered cubic structure. When the material properties become weak, sharp cracks will expand rapidly and cause brittleness. Austenitic stainless steel will not produce brittleness because it has a face centered cubic structure. Austrian stainless steel SUSL (18cr-9ni LC) is used And SUSL (18cr-12ni-2mo-lc) show that they still have 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 sensitization and carbide or & sigma; equal heterogeneous precipitation.
Corrosion fatigue resistant dual phase steel has high corrosion fatigue strength due to its high strength and corrosion resistance. Processing equipment is vulnerable to corrosive environment and loading cycle, and its characteristics are very suitable for such applications. The chemical composition of was determined after 1900 DEG/ 1922° After f (1040 & deg; / 1080 & deg; c) solid melt annealing,7 mm stainless steel plate, the ideal microstructure 50 & alpha/ 50 γ . If the temperature of heat treatment is higher than 2000 DEG; F, which may lead to the increase of ferrite composition. Like other duplex stainless steels, alloys are susceptible to intermetallic precipitation. Intermetallic phase at 1300 DEG; F and 1800 & deg; F, at 1600 & deg; At temperature F, the precipitation rate is fast. Therefore, we need to test to ensure that there is no intermetallic phase. Refer to ASTM A 923 for the test. For hot forming, we suggest that the forming should be at 600 DEG; Below F. During hot forming treatment, the whole workpiece shall be heated as a whole, which shall be at 1750 DEG; F to 2250 & deg; F, and the alloy is very stable at this temperature. If the temperature is too high, the alloy is prone to hot tearing. Below this temperature, austenite will fracture. Below 1700 DEG; At F, the intermetallic phase will be formed quickly due to the influence of temperature and deformation. After hot forming, it should be immediately adjusted to 1900 DEG; F and quench to restore its phase balance, but if this is necessary, the material should be as low as 1900 & deg; F, followed by rapid cooling and water quenching.
Deburring: after the pipe is cut off, the burr shall be removed to avoid cutting the sealing ring.
Manufacturing process hot rolling (seamless steel pipe): round tube blank → Heating → Perforation & rarr; Three roll cross rolling continuous rolling or → Off pipe & rarr; Sizing (or reducing) → Cooling → Straightening & rarr; Hydrostatic test (or flaw detection) → Mark & rarr; The raw material for warehousing and rolling seamless pipe is round pipe blank. The round pipe blank shall be cut and processed by cutting machine, and the blank with a growth of about 1m shall be brought to the furnace for heating. The billet is sent to the furnace for heating at a temperature of about 1200 degrees Celsius. The fuel is hydrogen or acetylene. The temperature in the furnace is the key problem. After the round tube billet is discharged from the furnace, it should be pierced through the pressure piercer. Generally, the more common piercer is the cone roll piercer. This piercer has high production efficiency and good product quality. It is specialized in stainless steel plate, stainless steel belt and stainless steel pipe, with high pressure resistance grade, good waterproof performance, fire and high temperature resistance,Stainless steel square tube 304, strong overload capacity, corrosion resistance, radiation protection, long service life, large perforation diameter expansion, and can wear a variety of steel grades. After perforation, the round tube blank is successively rolled by three roll cross rolling continuous rolling or rolling. Take off the pipe after sizing. The conical drill bit of the sizing machine rotates into the steel embryo at high speed to form a steel pipe. The inner diameter of the steel pipe is determined by the outer diameter length of the sizing machine bit. After sizing, the steel pipe enters the cooling tower for water spray cooling. After cooling, the steel pipe will be straightened. After straightening, the steel pipe is sent to the metal flaw detector (or hydrostatic test) for internal flaw detection. If there are cracks, they will be detected. Steel pipes should be strictly selected manually after quality inspection. After the steel pipe is inspected the number, specification, production batch number, etc. shall be sprayed with paint. And hoisted into the warehouse by crane.
Respect for customers.Logistics cost: different delivery locations determine different transportation costs. The long-distance transportation cost should be 500 yuan per ton and the short-distance transportation cost should be about 300 yuan per ton.
The stainless steel strip is supplied in coils, also known as strip steel. It is divided into hot rolling and cold rolling, as well as ordinary steel strip and high-quality steel strip. There are many kinds of stainless steel belts! Wide use! There are: 201 stainless steel belt, 202 stainless steel belt, 304 stainless steel belt, 301 stainless steel belt, 302 stainless steel belt, 303 stainless steel belt, 316 stainless steel belt, J4 stainless steel belt, 309S stainless steel belt, 316L stainless steel belt, 317L stainless steel belt, 310S stainless steel belt, 430 stainless steel iron belt, etc! Thickness: 0.02mm-4mm, width: 5mm-1550mm, can be customized without standard!
Folding and editing this section of silicon steel strip grain oriented silicon steel strip, also known as cold rolled silicon steel strip for telecommunications industry, is a silicon steel strip with grain oriented structure and thickness less than 0.20mm, which is used to manufacture various power transformers, pulse transformers, converters and other iron cores with working frequency above 400Hz.
Stainless steel tube toxic chromium and nickel is not bad for you? Stainless steel contains a lot of chromium and nickel. Why is stainless steel still? The following Tianjin stainless steel pipe factory will answer for you: food grade stainless steel pipes will be corroded into spots for a long time if they are not soaked in acid (vinegar) and salt for a long time. Good stainless steel is a model and never rusts.
Bidding.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.
Solution treatment. The main purpose of water quenching after heating the steel to 1050 ~ 1150 ℃ is to dissolve the carbide in austenite and keep this state to room temperature, so that the corrosion resistance of the steel will be greatly improved. As mentioned above, in order to prevent intergranular corrosion, solid solution treatment is usually used to dissolve Cr23C6 in austenite and then cool rapidly. Air cooling can be adopted for parts, and water cooling is generally adopted.
Manufacturing process hot rolling (seamless steel pipe): round tube blank → Heating → Perforation & rarr; Three roll cross rolling, continuous rolling or → Off pipe & rarr; Sizing (or reducing) → Cooling → Straightening & rarr; Hydrostatic test (or flaw detection) → Mark & rarr; The raw material for warehousing and rolling seamless pipe is round pipe blank. The round pipe blank shall be cut and processed by cutting machine, and the blank with a growth of about 1m shall be brought to the furnace for heating. The billet is sent to the furnace for heating at a temperature of about 1200 degrees Celsius. The fuel is hydrogen or acetylene. The temperature in the furnace is the key problem. After the round tube billet is discharged from the furnace, it should be pierced through the pressure piercer. Generally, the more common piercer is the cone roll piercer. This piercer has high production efficiency and good product quality. It is specialized in stainless steel plate, stainless steel coil, with high pressure resistance grade good waterproof performance, fire and high temperature resistance strong overload capacity, radiation protection corrosion resistance, long service life, large perforation diameter expansion, and can wear a variety of steel grades. After perforation, the round tube blank is successively rolled by three roll cross rolling, continuous rolling or rolling. Take off the pipe after sizing. The conical drill bit of the sizing machine rotates into the steel embryo at high speed to form a steel pipe. The inner diameter of the steel pipe is determined by the outer diameter length of the sizing machine bit. After sizing, the steel pipe enters the cooling tower for water spray cooling. After cooling, the steel pipe will be straightened. After straightening, the steel pipe is sent to the metal flaw detector (or hydrostatic test) for internal flaw detection. If there are cracks, bubbles and other problems inside the steel pipe, they will be detected. Steel pipes should be strictly selected manually after quality inspection. After the steel pipe is inspected, the number, specification, etc. shall be sprayed with paint. And hoisted into the warehouse by crane.
.D-outer diameter (mm) as stainless steel pipe for reprocessing device, in order to reduce carbon content by vigorously welding chromium carbon compounds at affected parts, or silicon and phosphorus content in Nb steel. In addition, in order to improve the corrosion resistance of ULC steel, the steel industry with phosphorus content below 0.015% is manufactured. After 20 times of 65% boiling corrosion test, it is found that if the corrosion degree of the solution treated material is less than 0.1mm/a, 650 ℃ & times; The sensitized material for 2h has excellent corrosivity when the corrosion degree is less than 0.2mm/a.
It is generally suitable for the welding of thin plates below 6mm, with the characteristics of beautiful weld formation and small welding deformation.
National standard thickness of stainless steel pipe. Stainless steel pipe is a brand of stainless steel produced according to American ASTM standards. Before the national standard thickness of stainless steel pipe, there are stainless steel pipe national standard thickness national standard wall thickness table product name specification material price (yuan ton) rise and fall welded pipe 6 points 5mm (& phi; 275mm) 3850 + 30 welded pipe 1 inch 0mm (& phi; 330mm)