Yechee provides a complete set of steel structure members for factory buildings, airport, stadium, station, bridge, thermal power plant, wind power project, commercial building & dwelling, crane system, communication tower, ocean engineering, ect. All the materials of our steel frame are c beam, z beam, h-shaped steel and thick iron plates or sheet, the grade is upon euro norm s355jrc or american norm astm a572 grade 50 or equivalent to q345b. None
