*4.5 mm – 6.0 mm – 8.0 mm *9.00 mm – 12.0 mm – 15.0 mm *19.0 mm – 25.0 mm – 31.0 mm *50.0 mm – 63.0 mm – 75.0 mm *100.0 mm
ASTM A 572 grado 50
