北京地区镀锌方管价格震荡持稳运行成交略有…方管北京市场镀锌方管市场价格小幅上涨，4日北京镀锌方管市场价格较昨上涨30元，方管市场成交略有好转。市场方面，前两两日黑色系期货连续上涨，在一定程度上提振了市场心态。贸易商选择稳价减 少议价空间或者小幅上调价格以带动出货，操作上还是以出货为主。今日热卷期货表现较好，市场信心略有恢复。镀锌价格小…

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.

上海方管价格或继续维稳运行厂家踏上归家旅…方管本周上海方管价格以稳为主，本周从现货市场来看，市场几乎进入休市状态，方管厂家都以踏上归家旅程，市场实际交投基本安静，价格继续维稳运行。库存方面：本周上海方管库存29.58万吨：较前期整体库存增加4.33万吨：线材4.28万吨，方管25.30万吨。预计下周上海方管市场价格或继续维稳运行。方管价格方面，截至1月17日九江产Φ… 方管市场价格普遍下跌厂家出现小涨方管方管市场价格普遍下跌。主导市场，北京、天津、上海和广州均出现下跌。周五期螺夜盘震荡走绿，周末市场氛围普遍较弱，但早盘借着制造 业的回暖再次反弹至高位，只是在消息面依旧没有利好的情况下，今日市场价格普遍下跌。午后盘面保持高位震荡，受此影响，个别地区表现有所好转。从市场了解 到，北京午后部分规格追跌20-30，…