厂家防止方管坯分层的三点措施方管有时方管坯会出现分层问题，从而导致探伤不合。要预防这一缺陷，我们可以采取以下三点处理措施：(一)优化缓冷时间：优化方管板坯的缓冷工艺，主要针对堆垛温度和堆垛持续时间。轧制钢板厚度不大于80mm钢板热矫直后，在冷床停留时间不得超过5min。厚度大于80mm钢板可适当延长至10min，确保钢板成垛前温度控制在…

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。

方管市场价格部分反弹厂家反馈出货一般方管方管市场价格部分反弹。主导市场，北京、上海小幅反弹，天津、广州以稳为主。上周五降准预期落空，期螺夜盘在水平线反复震荡，最后收绿，不过继周五之后，市场还有一波元旦的降准预期，所以今早盘面尚有支撑，冲高回落走势后保持在了高位。所以今日开市，方管市场价格部分反弹。午后盘面维持高位平稳走势，方管现货方面南方方… 西安方管市场价格仍以窄幅震荡为主规格较为…方管西安方管市场价格小幅回落，市场成交一般。今日外围邯郸市场价格报3780元/吨，小幅上涨10元/吨。反观西安市场，热卷价格报3870元/吨，与上周价格相比小幅下跌10元/吨，整体成交一般。资源方面，主导钢厂到货量增加，据不完全统计本周陕西市场库存增0.5万吨至4万吨左右，市场缺货较少，规格较为齐全。需求方面，今日市场成 交…