13日唐山槽钢价格主稳，周末累降30-40：正丰5#4910,6.3#4860,8#4810,20#5060,22-28#5110,30#5110,36-40#5560，电力22-28#5120,30#5120,32#5220，祥泰6.3#4850,8-16#4800,18-20#4850,22#5100，元丰10-12#4800,20#4830，申恒8-16#4800，瑞兴5#4940,6.3#4870,8-16#4820,18-20#4870