Thickness 0.8mm 0.9mm 1mm AISI ASTM SUS 304 stainless steel pipe seamless

Product of description

Stainless steel pipe (Stainless Steel) is a hollow long cylindrical steel, its scope of application is used as a pipeline for conveying fluid, mainly widely used in industrial pipelines such as petroleum, chemical industry, medical treatment, food, light industry, mechanical instrumentation, etc. and mechanical structural components. The stainless steel pipe is made of acid-resistant and heat-resistant steel billets, which are heated, pierced, sized, hot-rolled, and cut.

1. The power supply with vertical external characteristics is adopted, and the positive polarity is used for DC (the welding wire is connected to the negative pole).
2. It is generally suitable for welding thin plates below 6mm, and has the characteristics of beautiful weld shape and small welding deformation.
3. The protective gas is argon with a purity of 99.99%. When the welding current is 50~50A, the flow rate of argon gas is 8~0L/min, when the current is 50~250A, the flow rate of argon gas is 2~5L/min.
4. The protruding length of the tungsten electrode from the gas nozzle is preferably 4~5mm. It is 2~3mm in places with poor shielding such as fillet welding, and it is 5~6mm in places where the slot is deep. The distance from the nozzle to the work is generally not more than 5mm.

Classification

Classification of stainless steel pipes: stainless steel seamless steel pipes and stainless steel welded steel pipes (seamed steel pipes) are basically two categories. According to the outer diameter and shape of steel pipes, they can be divided into round pipes and special-shaped pipes. Round steel pipes are widely used, but there are also some special-shaped steel pipes such as square, rectangular, semicircular, hexagonal, equilateral triangle, and octagonal.
For steel pipes under fluid pressure, hydraulic tests and radiographic flaw detection are required to check their pressure resistance and quality. It is qualified if no leakage, soaking or expansion occurs under the specified pressure. Some steel pipes are also tested according to standards or requirements of the buyer. Hemming test, flaring test, flattening test, etc.
Seamless stainless steel pipes, also known as stainless steel seamless pipes, are made of steel ingots or solid tube blanks that are perforated into capillary tubes, and then made by hot rolling, cold rolling or cold drawing. The specifications of seamless steel pipes are expressed in millimeters of outer diameter * wall thickness.
The full name of 304 stainless steel pipe is SUS304 stainless steel pipe.
SUS304 stainless steel pipe belongs to the stainless steel pipe of American brand material, and the domestic brand is equivalent to 0Cr19Ni9 stainless steel pipe, which is usually replaced by 0Cr18Ni9.
The anti-rust mechanism of stainless steel is that the alloying elements form a dense oxide film, which isolates oxygen contact and prevents further oxidation. So stainless steel is not "stainless".

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