分析方管表面缺陷的五种检测方法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…

贵阳市场主流方管价格持稳运行，日盘期螺呈宽幅震荡趋势运行，临近尾盘多空双方进行较量，最终期螺空头占据优势，收盘时大幅下调。唐山方坯今早张 10元，现普碳方坯含税出厂3610。今日起落一直徘徊在3900点位，多空双方多次博弈，贵阳市场成交较昨日相比有所下降，大户出货在1500吨左右， 目前整体市场利好影响正在逐渐降低，行情下行风险增大，且贵阳方管厂家对此均较为谨慎，均以出货变现为主。预计未来贵阳方管市场价格持稳。

Guiyang market mainstream square pipe prices stable operation, the daily snail showed a wide oscillation trend, near the end of the multi-empty two sides to compete, the final short snail occupies the advantage, closing down sharply. Tangshan billet Zhang 10 yuan this morning, now ordinary carbon billet with tax 3610. Today's ups and downs have been hovering at 3900 points, many empty parties have played many games. The market turnover of Guiyang City has declined compared with yesterday. Large household shipments are around 1500 tons. At present, the overall market positive impact is gradually decreasing, downside risks are increasing, and Guiyang managers are more cautious about this, mainly cash delivery. It is expected that the market price of Guiyang will remain stable in the future.

价格方面，贵阳市场螺纹钢、盘螺批量成交指导价格：三级E标螺纹钢方面，水钢产Φ18-25mm螺纹钢市场价格为4430元，较昨日持稳；水钢产Φ10mm盘螺市场价格为4950元，较昨日持稳。

Price, Guiyang market threaded steel, screw volume trading guidance price: three E standard threaded steel, Shuicheng production 18-25mm screw steel market price is 4430 yuan, more stable than yesterday; Shuicheng production 10mm screw market price is 4950 yuan, more stable than yesterday. 

　　乌鲁木齐方管价格暂稳运行厂家价格坚挺乌鲁木齐方管价格暂稳运行，市场方面，现主流规格售价在3980-4000元/吨，从了解的情况看，早盘钢坯拉涨，但市场需求跟进有限，整体成交量表现一般，方管厂家调价意愿不强，随行就市出货为主，后市来看，方管厂家价格坚…