Galvanized welded steel pipes for medium and low pressure fluid transportation in stainless steel plates

 　　Galvanized welded steel pipes for medium and low pressure fluid transportation of stainless steel plates are made of steel plates or strips, which are divided into furnace welded pipes, electric welding (resistance welding) pipes and automatic arc welded pipes due to different welding processes. Due to their different welding forms, they are divided into two types: straight seam welded pipes and spiral welded pipes. Due to its end shape, it can be divided into circular welded pipes and irregular (square, flat, etc.) welded pipes. Welded pipes are divided into several types due to their different materials and uses: GB/T3091-1993 (Galvanized Welded Steel Pipe for Low Pressure Fluid Transportation). Mainly used for conveying low pressure fluids such as water, gas, air, oil, and heating hot water or steam, and for other purposes. Its representative material is Q235A grade steel. GB/T3092-1993 (Galvanized Welded Steel Pipe for Low Pressure Fluid Transportation). Mainly used for conveying low pressure fluids such as water, gas, air, oil, and heating hot water or steam, and for other purposes. Its representative material is Q235A grade steel. GB/T14291-1992 (Welded Steel Pipe for Mining Fluid Transportation). Mainly used for straight seam welded steel pipes for mine ventilation, drainage, and shaft gas discharge. Its representative material is Q235a and B-grade steel. GB/T14980-1994 (Large diameter welded steel pipes for low-pressure fluid transportation). Mainly used for conveying low-pressure fluids such as water, sewage, gas, air, heating steam, and other purposes. Its representative material is Q235A grade steel. GB/T12770-1991 (Stainless steel welded steel pipes for mechanical structures). Mainly used for machinery, cars, bicycles, furniture, hotel and restaurant decoration, and other mechanical components and structural components. Its representative materials include 0Cr13, 1Cr17, 00Cr19Ni11, 1Cr18Ni9, 0Cr18Ni11Nb, etc. GB/T12771-1991 (Stainless steel welded steel pipes for fluid transportation). Mainly used for transporting low-pressure corrosive media. The representative materials are 0Cr13, 0Cr19Ni9, 00Cr19Ni11, 00Cr17, 0Cr18Ni11Nb, 0017Cr17Ni14Mo2, etc.



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Japanese Standard (1)

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 　　In the grades of Japanese steel (JIS series), ordinary structural steel mainly consists of three parts to represent the material. 　　For example, S (Steel) represents steel, F (Ferrim) represents iron; The second part represents different shapes, types, and uses, such as P (Plate) for plates, T (Tube) for tubes, and K (Kogu) for tools; The third part represents the characteristic number, which is generally the tensile strength. For example, SS400 represents Steel, the second S represents Structure, 400 represents the lower limit tensile strength of 400MPa, and the overall represents ordinary structural steel with a tensile strength of 400MPa.
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National Standard Properties of 304 Stainless Steel Plate

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　　 304 stainless steel plate tensile strength (Mpa) 520 　　Yield strength of 304 stainless steel plate (Mpa) 205-210 　　Elongation rate of 304 stainless steel plate (%) 40% 　　304 stainless steel plate hardness HB187 HRB90 HV200 　　The density of 304 stainless steel is 7.93 g/cm3. Austenitic stainless steel generally uses this value. The chromium content (%) of 304 is 17.00 to 19.00, and the nickel content (%) is 8.00 to 10.00304, which is equivalent to 0Cr19Ni9 (0Cr18Ni9) stainless steel in China 　　304 stainless steel is a versatile stainless steel material with stronger rust resistance than the 200 series stainless steel material. It also has good resistance to high temperatures. 　　304 stainless steel has excellent rust resistance and good intergranular corrosion resistance. 　　For oxidizing acids, it was found in experiments that 304 stainless steel has strong corrosion resistance in nitric acid below boiling temperature with a concentration of ≤ 65%. It also has good cor...
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Similarities and Differences in Performance between N08367 and N08926

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 　　Today, let's talk about the similarities between the two. UNS N08367 and 1.4529 (N08926) materials are both super austenitic stainless steel. High Cr, high Mo, high corrosion resistance, and excellent corrosion resistance in harsh environments such as high-temperature seawater or smoke exhaust desulfurization devices. Under certain conditions, it has corrosion resistance comparable to Hastelloy and pure titanium, making it a cost-effective stainless steel. 　　If the performance is similar, the components must be very similar. 　　I'll show you the ingredient list and you'll know. 　　Except for the Cu element, which has a smaller intersection (0.5-0.75%), all other elements have a larger space, which means that other components can be completely identical. 　　So the two are basically the same and can to some extent replace each other. 　　The commonly used pitting resistance index (PRE) for stainless steel expresses the degree of corrosion resistance. 　　The calcul...
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