9# mine i beam: mining i beam is commonly referred to mine steel, it is a type of mine steel, mainly used for the support of mine tunnel, flange width, height and thickness. 1, standard: YB/T24-1986/2 2, size specification: Type: 9# Heigh: 90±2.0 Leg width: 76±2.0 Web ...

Henan zongxiang heavy industry import and export co. LTD.    [Minerals & Metallurgy]   [Steel I-Beams]   [2018-06-13 15:31:04 ]