Stainless steel seamless pipe model specifications

أنابيب غير ملحومة من الفولاذ المقاوم للصدأ model specifications are diverse, the following is a comprehensive summary of its common model specifications:

First, by diameter and wall thickness classification

Small diameter: The diameter is common from 6mm to 20mm, such as 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm and so on. The wall thickness is thin, from 0.4mm to about 2mm.

Medium caliber: Diameters range from 20mm to 100mm, Such as 22mm, 25mm, 30mm, 32mm, 34mm, 38mm, 40mm, 42mm, 45mm, 48mm, 50mm, 51mm, 57mm, 60mm, 63mm, 65mm, 70mm, 73mm, 76mm, 80mm, 83mm, 89mm, 90mm, 95mm , 100mm, etc. Wall thicknesses of around 2mm to 10mm are more common.

Larger caliber: The diameter is about 100mm to 300mm, Such as 102mm, 108mm, 114mm, 121mm, 127mm, 133mm, 140mm, 146mm, 152mm, 159mm, 168mm, 170mm, 180mm, 192mm, 194mm, 200mm, 219mm, 245mm, 250mm, 273mm Let’s wait. The wall thickness may reach 10mm to 30mm or even thicker.

Large diameter: diameter of more than 300mm, such as 325mm, 355mm, 377mm, 406mm, 426mm, 457mm, 508mm, etc. The wall thickness is usually thicker to accommodate the needs of high pressure and large flow.

Second, classification by length

Hot rolled steel pipe: usually length (variable size) between 1.5m and 10m.

Hot extruded steel pipe: the length is usually greater than or equal to 1m.

Cold-drawn (rolled) steel pipe: depending on the wall thickness, the length is also different. Steel pipe with wall thickness between 0.5mm and 1.0mm, usually between 1.0m and 7m in length; A steel pipe with a wall thickness greater than 1.0mm is usually between 1.5m and 8m in length.

Third, classification by shape

Round section: The most common stainless steel seamless pipe shape, with a wide range of applications.

Shaped section: including rectangular tube, square tube, hexagonal tube, oval tube and other complex shapes of stainless steel seamless tube. These shaped tubes are often used for special occasions or to meet specific design requirements.

Fourth, classification by material

Common materials: including 200 series (مثل 201, 202) و 300 series (مثل 301, 304, 316, 316ل, إلخ.) الفولاذ المقاوم للصدأ. Stainless steel seamless pipes of different materials have different corrosion resistance, mechanical properties and processing properties.

Fifth, special specifications

In addition to the above conventional specifications, stainless steel seamless pipes of special specifications can also be customized according to the specific needs of customers, such as ultra-long, ultra-thin wall, special materials or special shapes.

Sixth, the expression method

The specifications of stainless steel seamless pipe are usually expressed by the outer diameter and wall thickness, for example, D108*5 indicates a stainless steel seamless pipe with an outer diameter of 108mm and a wall thickness of 5mm.

في ملخص, there are a variety of models and specifications of stainless steel seamless pipes, and appropriate specifications and materials can be selected according to specific needs. In practical applications, it is also necessary to consider the use of environment, working pressure, temperature and other factors to determine the most suitable model specifications.