型钢规格表(精选)
规格每米单重(Kg)MJ名称C100*50*15*2.54.31C型钢C100*50*15*2.754.7C型钢C120*40*20*35.36C型钢C120*50*20*35.84C型钢C120*6
型钢规格表(精选)