Steel Grade (鋼級):
10#,20#,35#,45#,Q345B,ST35(E235),ST45(E255), ST52(E355),SAE1010,SAE1020,SAE1035,SAE1045, SAE4130, SAE4140,etc.
Standards(標準):
國標:GB/T3639
歐標:EN10305-1,EN10305-4
美標:ASTM A519,AMS-T-6736
日標:JIS G3445,etc.
Size Range(尺寸范圍):
OD(外徑范圍):12-80mm WT(壁厚范圍):0.7-12mm