唐山方管市场价格小幅下跌厂家多以出货为主…方管唐山方管市场价格小幅下跌，成交整体一般，部分方管厂家成交情况不一，低价出货较多。目前下游需求正在逐渐释放，方管厂家整体心态方面偏空，当下厂家多以出货为主。库存方面整体来说要完全消化还需一段时间，随着后期需求的释放，短期内供给压力依然存在。 价格方面，三级E标方管方面，河钢产Φ12mm方管市场…

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.

成都方管市场价持稳运行厂家小幅累库方管成都方管市场价持稳运行。本地市场：今日成都市场方管持稳运行，据了解，本周社会库存小幅增长，符合市场预期，线材变化幅度不大，部分方管厂家小幅累库；终端需求基本停滞，节日氛围浓厚，预计明日成都市场方管价格盘整运行。方管价格方面，现达钢、威钢产Φ8-10mm高线市场价格为3960元/吨，持稳，成实产 Φ8-10mm高线市场价… 常州镀锌方管市场价格将暂稳观望运行成交尚…方管常州镀锌方管市场价格坚挺。今日期货震荡上行，上游原材料方坯、带钢价格继续回落，管厂大幅下调出厂价格。目前常州镀锌方管市场价格坚挺，整体成交尚可。据了解，常州地区近期市场成交比 较平稳，尽管市场上其他地区镀锌方管价格有所回落，本地方管厂家挺价意愿高，短期内有支撑作用。接近年底，方管厂家心态比较稳定，预计…