Black carbon steel tube

The coils used for the production of tubes comply with UNI EN 10025-2 with regard to the technical conditions of delivery of non-alloy steels for structural purposes and to UNI EN 10051with regard to dimensional and shape tolerances.

In the production phase, special attention is paid to quality controls, in particular, in continuous are carried out: 

• Dimensional checks according to UNI EN 10219-2 and UNI EN 10305-5; 

• Visual checks according to 10219-2 and UNI EN 10305-5; 

• Crushing tests for round tubes according to UNI EN ISO 8492; 

• Checks on welding, carried out using the HF method, by means of the induced current method according to UNI EN ISO 10893-2. 

The checks to determine the conformity of the tubes produced to the reference standards continue in laboratories. All the machines we use are certified and subject to periodic maintenance. 

Below are the tests carried out on tube samples in laboratories: 

• Tensile test UNI EN ISO 6892-1; 

• Resilience test UNI EN ISO 148-1; 

• Spectrometric tests to determine the chemical composition; 

• Macrographic checks of the thermally altered zone.