国内方管价格窄幅下调厂家处于利润边缘或倒…方管今日方管市场价格主稳个调，整体成交仍然受限，成本方面虽有波动，但现货调价不积极，多数方管厂家处于利润边缘或倒挂，本周开工率继续下滑，方管 厂停产检修居多。今日除南方日钢资源个别上调20-30元，其它市场价格继续持稳，在这种上涨无力，下跌有限的行情下，方管厂家操作空间小，出货普遍不佳，午后昌黎…

作为一个生产方管的厂家要对方管的各个工艺流程、钢管材质性能有足够的掌握，在客户订购焊管的时候方管和矩形管是客户的选择对象。我们多次提到方管和矩形管的优劣，方管在生产过程中只有管端的尺寸是最严格的的，毕竟方管不同于矩形管，所以在生产方管的时候要注意把口径和管端做到最好，以便于在安装焊接过程中能够方便快捷的施工。对于生产大口径钢管壁厚较薄的钢管的时候要注意加固或者对钢管做支架，以防止方管在运输过程中出现椭圆或口径变形。对于方管来说口径的准确尺寸是最重要的，其次要注意的是方管焊口不要咬边，要把卷制好的钢管的两个焊边对齐对平，焊接出来的钢管才能漂亮、规范。其次要注意的是方管的直度，方管的直度不但影响方管整体的外观最主要的是影响后期施工焊接。

As a manufacturer of square pipe, we should have a good command of each process and material properties of square pipe. When customers order welded pipe, square pipe and rectangular pipe are the customers'choices. We have repeatedly mentioned the merits and demerits of square and rectangular pipes. In the production process, only the pipe end size is the most stringent. After all, square pipes are different from rectangular pipes. Therefore, we should pay attention to the best caliber and pipe end when producing square pipes so as to facilitate the installation and welding process. For the production of large diameter steel pipe with thinner wall thickness, attention should be paid to strengthening or bracketing steel pipe to prevent ellipse or caliber deformation of square pipe during transportation. For square pipe, the exact size of the caliber is the most important. Next, we should pay attention to the square pipe weld without undercutting. We should align the two weld edges of the rolled steel pipe, so that the welded steel pipe can be beautiful and standard. Secondly, attention should be paid to the straightness of square pipes. The straightness of square pipes not only affects the overall appearance of square pipes, but also affects the later construction welding. 

哈尔滨镀锌方管价格或暂稳运行厂家到货量增…方管今日哈尔滨镀锌方管价格维稳运行。今日热卷黑色系期货维持震荡走势，市场心态一般。据方管厂家反馈，彩涂价格目前尚可维持在高位运行，方管厂家到货量增多，实际成交可议价。受天气因素影响，下游集中备货意愿不强，整体成交偏弱，今日市场部分方管厂家出货量270吨左右。心态方面，方管厂家操作以出货回笼资金为主，对后市多… 潍坊方管价格与上一交易日相比价格上调处于…方管潍坊方管价格与上一交易日相比价格上调。今日山东方管市场价格整体又出现一个上调的趋势，目前部分方管厂家认为方管市场价格虽然近期有小幅度上调，但是成交方面与去年相比还是处于一个弱势阶段。对于后期市场是否迎来利好行情，方管厂家方面表示怀疑。根据方管厂反映，目前市场价格上涨并不一定代表市场将会迎来较好的行情。…