Tubulae ferreae inconsutiles ad fistulas fabricandas, organa organa, instrumenta et structuras mechanicas
Tubus ferro inconsutilem structuram
GB/T 8162-2008 10# ferro, 20# ferro, 35# ferro, 45# ferro, Q345, Q460, etc.
Seamless carbo carbonis et admixto ferro fistulae mechanicae
ASTM A519-2006 1018, 1026, 8620, etc
Calidum involutum non admixtum sistens fabricam chalybis et structurae subtilis opacitatis sectionis concavae
BS EN 10210-1-2006 S235GRH, S275JOH, S275J2H, etc.
Inconsutilem, conflati et calvanizati ferro tubos intinge
ASTM A53/A53M-2012 GR. A, GR.B
