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304 stainless steel pipe related knowledge introduction Nov 05, 2021

304 stainless steel pipe is the most commonly used steel in stainless steel. The relevant knowledge is introduced in detail as follows.

304 stainless steel welded pipe is also better in terms of high temperature resistance, and the general use temperature limit is less than 650°C. 304 stainless steel has excellent anti-corrosion function and good resistance to intergranular corrosion.For oxidizing acids, it is found in the experiment that 304 stainless steel has strong corrosion resistance in nitric acid with a concentration of ≤65% and below the entertainment temperature. It also has excellent corrosion resistance to alkali solutions and most organic and inorganic acids.

304 stainless steel is a universal stainless steel material, and its anti-rust function is stronger than that of 200 series stainless steel material.


304 stainless steel welding receiving function:

304 stainless steel is the most widely used chromium-nickel stainless steel, which has excellent corrosion resistance, heat resistance, low temperature strength and mechanical properties. It is resistant to corrosion in the atmosphere. If it is an industrial atmosphere or a heavily polluted area, it needs to be cleaned in time to avoid corrosion. Suitable for food processing, storage and transportation. It has excellent processing function and weld ability. Plate heat exchange, bellows, household goods, building materials, chemistry, food industry, etc. 304 stainless steel is a food-grade stainless steel recognized by the country.


The American Iron and Steel Institute uses three digits to indicate various specification grades of  stainless steel.

①Austenitic stainless steel is indicated by numbers in the 200 and 300 series,

②Ferritic and martensitic stainless steels are indicated by 400 series numbers.

For example, some of the more general Austenitic stainless steels are marked with 201, 304, 316 and 310,

③Ferritic stainless steel uses 430 and 446 as symbols, and martensitic stainless steel uses 410, 420 and 440C as symbols.

④ Duplex (austenite-ferrite), stainless steel pipes, stack hardening stainless steels, and high alloys with iron content less than 50% are usually named after patents or trademarks.


304 stainless steel welding management theory weight:

W = outer diameter-wall thickness x wall thickness x 0.02491 stainless steel pipe calculation method outer diameter-wall thickness x wall thickness x 0.02491.


304 stainless steel welded pipe production process:

A. Round steel preparation; b. Heating; c. Hot rolling perforation; d. Cutting head; e. Pickling; f. Grinding

304/304L Stainless Steel Pipe

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