天津方管基本持稳的同时弱势运行出货量低位平稳…本周天津方管市场涨跌两难。周内，本地天钢产热轧管坯价格和山东中小管厂出厂价平稳运行，受此影响，本地方管价 格调整的幅度并不大，仅仅窄幅波动。从市场了解到，临近年底多数终端方管厂家已无新增采购计划，因…

唐山方管市场价格稳中偏弱运行。周末受钢坯下跌影响，唐山方管价格普遍小降10-20元，今日早盘价格主稳，但成交弱，盘中部分降价走货，截止16点统计唐山23家方管厂共出货 35860吨，整体成交一般，个别尚可，工字钢7家7600吨，槽钢12家15100吨，角钢5家13160吨。午后钢坯价格持稳，期螺宽幅震荡，市场走势趋稳， 但鉴于需求有限，预计明日唐山方管价格将延续稳中偏弱格局。

Tangshan Fangguan market price is stable and weak. Affected by the drop of billet over the weekend, Tangshan square pipe price generally fell by 10-20 yuan. Today's morning price is stable, but the transaction is weak. Some of the discounted goods go on sale. As of 16:00, 23 square pipe factories in Tangshan have shipped 35,860 tons. The overall turnover is normal. Individually, 7 I-beam steels have 7,600 tons, 12 channel steels have 15,100 tons and 5 angle steels have 13,160 tons. In the afternoon, billet prices remained stable, snail width shocked and market trend stabilized. However, due to limited demand, it is expected that Tangshan Square Tube Price will continue to be stable, moderate and weak tomorrow.

价格方面：现唐城产16-20工报价3900元，大成产14-16工报价3910元，正丰产5#角钢报价3930元，申达产14-20号槽钢报3880元，电力产22-25#槽钢报价4000元。

Price: Tangcheng 16-20 works quoted 3900 yuan, Dacheng 14-16 works quoted 3910 yuan, Zhengfeng 5 angle steel quoted 3930 yuan, Shenda 14-20 channel steel quoted 3880 yuan, electric power 22-25 channel steel quoted 4000 yuan.

　　焊接方管与无缝方管的本质差别在哪里？无缝方管是由无缝钢管冷拔挤压成型的方型钢管，并非直出的焊接方管，而焊接方管也称焊管，是用钢板或带钢经过卷曲成型后焊接制成的方管。焊接方管生产工艺简单，生产效率高，品种规格多，设备资少， 常用材质为：Q235…