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…

廊坊方管市场价格继续持稳。近期廊坊方管市场价格大体持稳，当然也有低价去库存者，从方管厂家处了解，节前部分下游和终端有备货需求，整体成交还不错，大户一天能出700-800吨。 不过今日市场成交稍显弱，期螺震荡弱势震荡影响，市场观望氛围再起，不过考虑钢坯及成本端有支撑，商家降价意愿也不强，故预计近期廊坊方管价格还将继续 持稳。

Langfang Fangguan market prices continue to be stable. Langfang square tube market prices have been generally stable in recent years, of course, there are low-cost to inventory, from the merchants know that the downstream and terminal parts of the pre-festival demand for spare goods, the overall turnover is good, large households can produce 700-800 tons a day. However, today's market turnover is slightly weaker, the impact of weak concussion, the market wait-and-see atmosphere rebounded, but considering the support of billet and cost side, the willingness of merchants to reduce prices is not strong, so it is expected that the prices of Langfang Square Tube will continue to stabilize in the near future. 方管价格方面：现津西产200*200方管价格为3690元，津西产300*300方管价格为3790元，津西产400*400方管价格为3910元，津西产700*300方管价格为3840元，以上价格均与昨日持平。

In terms of square tube price, the present price of 200*200 square tube is 3690 yuan, the price of 300*300 square tube is 3790 yuan, the price of 400*400 square tube is 3910 yuan, and the price of 700*300 square tube is 3840 yuan. The above prices are all the same as yesterday.

　　唐山方管价格持稳运行厂家多数暂停报价了本周唐山方管价格持稳运行。本周唐山小方管市场持震荡走势。本周小方管市场前期势头强劲，拉涨之后价格始终居高不下，近期受期货市场影响开盘交易偏弱。钢坯锁价运行，受成本因素以及近期调坯厂家轧线检修的双重影响小…