C steel channel dimensions 1.Standard:AISI,ASTM,JIS,DIN,GB ... : bright,polished,hot rolled 3.size from:50x25 TO 300X90 C steel channel dimensions1.Standard:AISI,ASTM,JIS,DIN,GB2.Surface ... manufacturer of steel with well-equipped testing equipment and strong technical force;(3)Our company can provide varieties of materials to ...