Specifications(mm): 20X20X2--200X200X25
Material: Q235,Q345,SS400,SS540,Q195,45#
Place of Origin: China (Mainland) Brand Name

Channel steel
Material: Q235,Q345,SS400,SS540,Q195,45#

Specifications(mm): 50X37X4.5X7.0--400X104X14.5X18

length is 6m---12m.