国内方管或将继续趋弱整理厂家操作以出货为…方管方管价格持稳运行，今日方管主流企业持稳运行，原料方面：昌黎部分钢坯公布12月31日--1月2日早上钢坯执行结算价3300；下游管厂逐渐停工，因此方管市场高价成交 低迷，下游方管厂家观望意图明显。午后部分带方管厂家逐渐出清日产。唐山方管降10、中宽带主流方管厂家持稳。今日现货市场，方管较昨主流降20，中宽…

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.

国内方管市场价格稳中上调观望心态较重方管方管市场价格部分地区小幅上调，主要以南方为主，涨后成交有所跟进，借此方管厂家均以出货为主，现货资源仍然有部分规格较为稀缺，钢厂端成品 库存也受限产有一定限制，北方重点城市唐山方管钢厂指导价格有涨有跌有稳，北方普遍以稳为主，观望心态较重，基本面仍然较空，方管价格虽有一定支撑，但市场对方管价格仍恐慌，有看… 石家庄方管市场价格小幅下调补库动力不足方管石家庄方管市场价格小幅下调。石家庄地区方管市场出货不理想，山东方管厂提货有优惠政策，加大市场竞争力，近日方管厂家纷纷下调价格，多以散户出货为主。当下诸多方管厂家库存维持 低位，多以随进随补为主，补库动力不足。即将进入淡季，方管厂家信心不振，对后市预期不乐观，预计短期内石家庄方管市场继续维持弱势运行。今…