广州市场方管或将小幅下跌市场成交平淡方管广州市场方管价格弱稳，市场成交平淡，较节前出货量基本无明显增长。今日螺纹钢主力期货高开，盘中向上动力不足开始震荡下行；铁矿石整日呈现震荡态势，临近收盘窄幅拉涨。据了解国内某港口矿石库存仍在下跌，目前矿 石可流通的资源有限，矿山主要保协议矿的供应，在矿石采购价格的支撑下，钢厂挺价意愿较强，…

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.

西安方管价格或延续盘整厂家报价以稳为主方管本周市场情况看，近期各方管厂家资源到货不多，叠加西安价格较外围市场偏低，方管厂家报价持稳观望。成交方面看，近期终端需求表现一般，方管厂家投机意愿不 强，市场处于有价无市状态，交易氛围比较冷清，多数方管厂家同口径成交仅百十吨。资源结构方面来看，西安市场低合金中板资源仍然偏少，部分规格资源紧俏，价格 表现坚… 预计明日国内方管价格或有小幅回落可能出货…方管方管市场价格稳中趋强。成交方面看，今日出货清淡，邯郸千吨级大户出货在200吨左右，上海乐从500吨左右，南方出货较北方稍强。值得一提的是，由于北方需求不佳，目前北材南下进程有所提前，而南方地区近期又出现台风暴雨侵袭，成交堪忧。预计明日国内方管价格或有小幅回落可能。Square management market prices are stabili…