国内方管市场价格仍以稳为主厂家开工有延期…方管今日方管市场价格均稳，成交仍然乏力，多数地区车辆运输困难，有部分方管厂家跟随仅有的几个方管厂家的指导价格出货，现货库存较为充足，而方管厂家端也可 以接定计划，但有一定限量，今日唐山方管价格仍以弱稳为主，方管厂家开工有延期，目前槽、工基价3400-3450，方管5#3440-3450，H基价 3600-3650，支持打…

小口径方管用作炼钢吹氧用管，冶炼吹氧用钢管一般用焊接钢管，规格由3/8寸-2寸八种。用或Q195-Q235钢带制成。为防蚀，有的进行渗铝处理。是在S系列产品基础上研制而成，天津吹氧管，结合了当前电弧炉炼钢的实际需要，耐火度高、消耗量少、操作方便等特点。电弧炉炼钢中输送氧气或其它气体，在电弧炉内熔化并精炼钢铁。

Small caliber square pipe is used as oxygen blowing pipe in steelmaking. Welded steel pipe is generally used for oxygen blowing pipe in steelmaking. The specifications range from 3/8 inch to 2 inch. Made of or Q195-Q235 steel strip. In order to prevent corrosion, some are aluminized. It is developed on the basis of S series products. Tianjin oxygen blowing pipe combines the actual needs of electric arc furnace steelmaking. It has the characteristics of high refractory, low consumption and easy operation. In electric arc furnace steelmaking, oxygen or other gases are transported to melt and refine steel in the electric arc furnace. 小口径方管冶炼吹氧用钢管按焊接方法不同可分为电弧方管、高频或低频电阻方管。电焊钢管用于石油钻采和机械制造业等，可用作水煤气管等，大口径直缝方管用于高压油气输送。吹氧管厂家生产的扩口吹氧管，强度一般比直缝方管高，能用较窄的坯料生产管径较大的方管，还可以用同样宽度的坯料生产管径不同的方管。但是与相同长度的直缝管相比，焊缝长度增加30~100%，而且生产速度较低。因此，较小口径的方管大都采用小口径方管，大口径方管则大多采用螺旋焊。

Small caliber square pipe for oxygen blowing can be divided into arc square pipe, high frequency resistance square pipe or low frequency resistance square pipe according to different welding methods. Welded steel pipes are used in oil drilling and mechanical manufacturing, water gas pipes, etc. Large diameter straight seam square pipes are used for high pressure oil and gas transmission. Oxygen blowing tube manufacturer's enlarged oxygen blowing tube has higher strength than straight slotted square tube. It can produce square tube with bigger diameter with narrower blank, and can also produce tube with different diameter with the same width blank. However, compared with the straight seam pipe of the same length, the length of the weld increases by 30-100%, and the production speed is lower. Therefore, the small diameter square pipe is mostly used, while the large diameter square pipe is mostly spiral welded.

国内方管市场价格将窄幅波动为主厂家有排产…方管方管市场价格均下调，方管厂家已经全面复工，而近期价格波动较大，涨涨跌跌让整体心态谨慎心态加重，市场方面仍有方管厂家在家办公为主，供需仍然 没有平衡，统计唐山方管方管厂家出货情况唐23家方管厂，多数方管厂家以复工，未复工共6家，车辆运输较通畅，最远可送达至山东地区，近期部分方管厂家有排产计划，需 求也是仅有… 短期西安方管市价稳中弱势运行价格下跌20-…方管西安方管市场价格下跌20-100元，当地包钢资源货少。今日管坯个别调整，山东地区各管厂出厂价格暂无变动，市场方面，西安方管市价主流价格下跌20-100元，现商家操作谨慎，对后市不大看好，补 库意愿不强，前期库存释放缓慢，临近五一，市场有让利走量的现象出现。市场观望情绪浓厚。预计短期西安方管市价稳中弱势运行。The ma…