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According to SR EN 10297-1, these products are labelled: Seamless Steel pipes for general
construction purposes and machine engineering

Dimensional range for non-alloy and alloy seamless steel pipes:
 - Outer diameter: 21.3 ÷ 508 mm;
 - Wall thickness: 2.3 ÷ 40 mm;

The non-alloy and alloy steel grades for seamless steel pipes for general construction
purposes and machine engineering and states of delivery are specified in SR EN 10297-1.

Part of non-alloy and alloy steel grades for seamless steel pipes for mechanical purposes
are: E235; E275; E315; E355; E470; C22E; C35E; C45E; 41Cr4; 25CrMo4; 34CrMo4; 42CrMo4; 36CrNiMo4; 16MnCr5.