S22053 stainless steel plateWhat should be paid attention to in construction

announcer:hp717HP127443542 release time:2022-03-05 19:17:23

The application range is wider than that of ferritic stainless steel. Compared with ferritic stainless steel, duplex stainless steel has the following disadvantages: high alloy element content and relatively high price. Generally, ferritic stainless steel does not contain nickel.

From the perspective of metallography, a very thin chromium film is formed on the surface, which is separated from the corrosion resistance of oxygen invaded in the steel.

.Ferritic and martensitic stainless steels are represented by 400 series numbers. Ferritic stainless steel is marked with 430 and 446, martensitic stainless steel is marked with 4420 and 440C, dual phase (austenite ferrite).

Organic substances (such as melons and vegetables, noodle soup, phlegm, etc.) adhered to the surface of stainless steel constitute organic acids in the presence of water and oxygen. For a long time, the corrosion of organic acids on the metal surface.

.In addition to stress corrosion resistance, professional stainless steel plate, stainless steel coil, stainless steel belt and stainless steel pipe have stable safe and reliable performance and can be maintenance free. The technical level has reached the domestic level and the advanced level of similar international products. Other local corrosion resistance properties are better than ferritic stainless steel.

  — General model; 188 stainless steel. The GB brand is 0Cr18Ni9.

The allowable depth of stainless steel straight track is also required. For hot-rolled and hot-rolled steel pipes, stainless steel pipes with diameter less than or equal to 140mm and not greater than 5% of the nominal wall thickness,Specification of stainless steel square pipe, the large depth is less than or equal to 0.5mm cold drawn (rolled) stainless steel pipes are not greater than 4% of the nominal wall thickness, and the large depth is less than or equal to 0.3mm.


S22053 stainless steel plateWhat should be paid attention to in construction



The specification and appearance quality shall comply with the provisions of gb14975-2002 stainless steel seamless steel pipe. The steel pipe is usually 5 ~ 10m long (indefinite length) hot rolled steel pipe, and the hot-rolled steel pipe is equal to or greater than 1m. The wall thickness of cold drawn (rolled) steel pipe is 0.5 ~ 0mm,How much is the stainless steel pipe, 0 ~ 7m; the wall thickness is greater than 0mm, 5 ~ 8m.

The recrystallization temperature changes with the shape variable. When the shape variable is 60%, the recrystallization temperature drops to 650 ℃, and the recrystallization annealing temperature of cold deformed austenitic stainless steel is 850 ~ 1050 ℃. At 850 ℃, it needs to be kept warm for 3h, fully burned at 1050 ℃, which is conducive to reducing the cost.

Convenient and efficient.Stainless steel coil is widely used in chemical industry, food, papermaking, petroleum, atomic energy and other industries, as well as various parts of buildings kitchenware, tableware,0.2 stainless steel strip, vehicles and household appliances. 304 stainless steel coil is divided into austenitic stainless steel cold rolled coil and stainless steel hot rolled coil. 304 stainless steel (coil) plate features: beautiful surface and diversified use possibilities; Good corrosion resistance; Longer and more durable than ordinary steel; Good corrosion resistance; High temperature oxidation resistance and high strength, so it can resist fire; Good plasticity and welding performance. It has excellent rust and corrosion resistance, good intergranular corrosion resistance and good processing performance.

[(outer diameter wall thickness) wall thickness] 0.02491 = kg m (weight per meter)

Ti-5a alloy with improved titanium and overall corrosion resistance has been used to manufacture u and Pu solution evaporation boilers and heat recovery evaporation boilers in Donghai reprocessing plant, Japan. In addition, because zirconium has stable corrosion resistance in the environment, zirconium is used in its continuous dissolution tank in the reprocessing plant in liusuo village, Aomori County, Japan. The US Academy's ruling that the countervailing duty is not suitable for products from non market economy countries has just given China's steel pipe enterprises a little relief. The anti-dumping stick from the EU has given a heavy blow to hundreds of domestic stainless steel pipe manufacturers.


S22053 stainless steel plateWhat should be paid attention to in construction



Han Jianbiao, an analyst at Zoomlion steel, pointed out that since, China's steel pipe exports have been only 30000 or 40000 tons per month, of which seamless pipe exports are only about 10000 tons per month.

Price.For example, if the actual thickness of stainless steel 51 round pipe is 0.9, the weight of a single 6-meter-long stainless steel pipe is (51-0.90.920.024916 = 87kg, and the theoretical weight of a 6-meter-long 51 round pipe is 0.92. For example, the weight of a single 6-meter-long stainless steel pipe of stainless steel square pipe 7545 with a thickness of 0.92 is [(75 + 4214-014-0.920.920.024916 = 38kg). If the weight of stainless steel pipe per meter is calculated, the length can be changed into one meter.

The specific steps of continuous casting billet process of stainless steel pipe fittings are as follows: according to different steel grades, the vibration process of mold is matched with protective slag, which can improve the yield of 10%, save energy and shorten the production cycle, so as to improve the yield of molten steel.

  SPHDSPHD—& mdash; Hot rolled steel plate and strip for stamping.

.  ·Sewage treatment system.

Cold drawn (rolled) seamless steel pipe: round billet → Heating → Perforation & rarr; Lead & rarr; Annealing & rarr; Pickling → Oiling (copper plating) → Multi pass cold drawing (cold rolling) → Blank tube & rarr; Heat treatment & rarr; Straightening & rarr; Hydrostatic test (flaw detection) → Mark & rarr; Warehousing.

Stainless steel pipe appeared in Foshan, Guangdong Province in the tenth generation of the last century. With the rapid development of science and technology in recent decades, stainless steel pipe production is all over the country. Stainless steel pipe is more and more widely used. But in fact, most people, including many people in the industry