济南镀锌方管市场报价维持观望出货清库为主…方管济南镀锌方管市场报价维持观望。市场方面，今日期螺主力震荡收盘3537仓量243万手，增7.3万手，关注夜盘3540压力点方向；现货原料带钢145mm系表现供需两弱，355mm 系中宽带报价较昨下调10-20，现货裸价主流现货3370-3400，期货3300-3380左右较昨跌20-50元。河北主导管厂多跟随走低，镀锌方管 厂产线限产及高速…

方管价格窄幅上调，15日国内方管涨跌互现。今日145方管早盘开市主流报稳3880含税出厂，多数成交尚可，部分方管厂家早早出清日产停售，下游架子管需求较好，小窄 带价格有支撑，今日唐山丰润区调坯型钢厂预计按文件执行停限产，钢坯投机需求增加，钢坯直发较好，因此小窄带盘中累涨20；唐山355方管主流较昨涨 10，中宽带较昨涨20，周末两日没有期货做指导，因此方管价格仅依靠市场成交做参考，连续两日多以稳为主，今日铁矿石大幅拉涨，带动期螺尾盘大幅拉升， 调坯型钢厂、窄带及建筑钢材绝大多数将按照政策在7月16日凌晨执行停产，产线开工率将有所下降，对市场情绪有所提振，因此钢坯价格累涨20，方管成本上升， 因此方管出厂价也跟涨10-20，但整体出货一般，商家多挺价为主；华东华南地区今日方管价格窄幅调整，市场整体成交情况不温不火，下游需求表现平平，淡 季效应下拿货情绪普遍不高。目前，北方市场交投氛围受期货及限产影响好转，市场价格回涨10-20左右，当地贸易商部分有跟随拉涨情况，但具体成交暂无明 显好转。综合来看，考虑到供需弱势平衡，预计短期内国内方管市场或将高位坚挺整理为主。

Square tube prices rose narrowly, and domestic tube prices rose and fell on the 15th. Today, 145 square pipe early market mainstream reported stable 3880 with tax, most of the transactions are still acceptable, some square pipe manufacturers early out of the early morning Nissan stop selling, downstream shelf pipe demand is better, small narrow band prices are supportive, today Tangshan Fengrun District billet mill is expected to stop production according to the document, billet speculative demand increased, billet direct delivery is better, As a result, the mainstream of Tangshan 355 square pipe increased by 20% compared with yesterday, the broadband increased by 20% compared with yesterday, and the broadband increased by 20% compared with yesterday. There was no futures guidance on weekend two days. Therefore, the square pipe price only relied on market transactions as a reference. For two consecutive days, it was mainly stable. Today, iron ore rose sharply, leading to a sharp increase in the tail plate during the period, billet-adjusting mills, narrowbands and so on. The majority of construction steel will be shut down in the early morning of July 16 in accordance with the policy. The production line start-up rate will decrease and the market sentiment will be boosted. As a result, the billet price will increase by 20 and the square tube cost will rise. Therefore, the square tube ex-factory price will also rise by 10-20, but the overall shipment is general, and the merchants are mainly in the south of East China today. In spite of the narrow price adjustment, the overall market turnover is tepid, the downstream demand performance is flat, and the mood of picking up goods under the off-season effect is generally not high. At present, the trading climate in the northern market has been improved by futures and production restrictions. Market prices have risen by about 10-20. Some local traders have followed the upward trend, but the specific transaction has not improved significantly for the time being. Generally speaking, considering the weak balance between supply and demand, it is expected that the domestic market will be dominated by a strong consolidation in the short term.

方管价格方面：唐山热轧方管(2.5*355mm)唐山瑞丰3890较昨日涨20；天津热轧方管 4.0*(480-570)天津荣钢3940较昨涨20；无锡热轧方管（2.5*355mm）中天3950较昨降10，莱芜热轧方管2.5* （232-355）莱钢3910较昨稳，唐山热轧小窄带报3900较昨涨20。

重庆镀锌方管价格或趋弱运行厂家有抛售操作…方管今日重庆镀锌方管市场价格大幅上涨。本地市场：期货方面，早盘高位震荡，午后震荡趋弱，3826收盘，跌幅0.31%；现货方面大幅上涨，成交放缓。随着期货午后震荡趋弱，方管厂家有抛售操作， 恐高心态加重。另外方管厂家锁货方面：永航几大代理商，纷纷锁死方管厂家资源。但是随着现货的冲高，谨防回落。故预计明日重庆市场镀锌方… 分析方管表面缺陷的五种检测方法方管方管表面缺陷的检测方法，主要有以下五种：一电涡流检测.电涡流检测有多种形式，常用的有常规涡流检测、远场涡流检测、多频涡流检测和脉冲涡流检测等，利用电涡流传感器对金属进行感应，方管表面不同缺陷类型和形状将产生不同类型的信号。其优点是检测精度高、探测灵敏度高，检测速度快，能检测待检测管材的表面及亚表面，且…