30°双螺旋孔棒材

30°双螺旋孔棒材

Rods With 2 Helical Coolant Holes(30°)

30°三螺旋孔棒材

30°三螺旋孔棒材

Rods With 3 Helical Coolant Holes( 30°)

40°双螺旋孔棒材

40°双螺旋孔棒材

Rods With 2 Helical Coolant Holes(40°)

40°三螺旋孔棒材

40°三螺旋孔棒材

Rods With 3 Helical Coolant Holes(40°)