Mechanical and Constructional steeel drawn pipes are primarilly preferred in the areas where resistance to pressure is required and are usually used in substructre and superstructure buildings with machine parts and equipmants. They are used in the places that require both temperature longevity and reliability with high resistance to pressure compared to welded pipes. They are suppled in EN, GOST and ASTM norms. EN 10210 Standars, S355J2H quality is the most preferred one that are used upright support colums in roof space.