hat
c Pou sa yo klas asye li kapab nesesè nan ka a nan miray epesè T pi wo a 25 mm oswa T / D&gt; 0,15 pou aplike pou trempe Et revenu yo nan lòd reyalize estrikti ak materyèl gen entansyon pwopriyete yo. Va pran desizyon an dwe kite yo diskresyon nan manifakti a, men yo dwe deklare nan kliyan an nan yon moman nan ankèt, ak lòd. Tib asye trete nan yon fason yo dwe deziyen pa non an asye complétée pa senbòl la + QT.
eng
c For these steel grades it may be necessary in the case of wall thickness T above 25 mm or T/D &gt;0,15 to apply quenching and tempering in order to achieve the intended structure and material properties. The decision shall be left to the discretion of the manufacturer but shall be stated to the customer at the time of enquiry and order. Steel tubes treated in such a way shall be designated by the steel name supplemented by the symbol +QT.