天津蒸呢机市场价格稳中盘整，成交情况较上周有所好转。周初，由于上周末市场整体活跃程度不高，加之原料市场小幅震荡，本 地主流管厂蒸呢机价格开始转入平稳盘整状态。周中至周后期，成本端价格继续窄幅震荡，对于蒸呢机的支撑作用有所减弱，本地蒸呢机市场价格也随之小幅调整。从市场 了解到，随着建筑工程项目陆续开工带来需求的释放，下游商家也出现了阶段性补货，管厂出货较前期略显好转。目前终端用管企业开工率较往年依旧偏低，市场观 望情绪较浓，出货情况整体来说仍不如往年。库存方面，由于目前管厂多执行全线生产，尽管近期出货尚可，但整体库存依旧未见减少，后期销售压力依旧不容小 觑。后期来看，一方面当前上游原料市场难掩疲软之势，下游蒸呢机市场推涨缺乏有效动力，另一方面当前蒸呢机市场整体偏弱，商家对于今年旺季的期待普遍看淡。预 计下周天津蒸呢机市场仍将继续震荡盘整态势。
Tianjin Fangguan market price stabilization, consolidation, turnover than last week improved. At the beginning of the week, due to the low activity of the market as a whole last weekend and the small fluctuation of the raw material market, the local mainstream pipe factory price began to turn into a stable consolidation state. From mid-week to late-week, the cost-side prices continued to oscillate narrowly, which weakened the supporting role of the local regulators, and the local regulators'market prices also adjusted slightly. From the market, with the release of demand from the construction projects, downstream merchants have also made phased replenishment, and the delivery of pipe plants has improved slightly compared with the earlier period. At present, the start-up rate of terminal pipe enterprises is still low in the past years, the market sentiment is strong, the overall shipment situation is still not as good as in previous years. Inventory, as the current management plant to implement more full-line production, although recent shipments are still acceptable, but the overall inventory has not been reduced, late sales pressure is still not to be underestimated. Later, on the one hand, the current upstream raw material market is difficult to hide the weak trend, the downstream market is lack of effective momentum, on the other hand, the current market as a whole is weak, business expectations for this year's peak season are generally weak. It is expected that Tianjin Square Management Market will continue to shake and consolidate next week. 原料方面，唐山方坯、带钢价格小幅震荡盘整。截至4月4日，唐山市场普碳150×150钢坯现金含税出厂主流报价为3450元(吨价，下同)，与 上周同期持平；唐山带钢355mm系列主流报价为3700元，比上周同期上涨10元。周内原料基本面表现趋强，但高价出货较为吃力，继续冲高难度不小。后 期来看，受环保限产结束影响预计方坯、带钢产量将有所上升，不过需求本身并不处于弱势阶段，因此未有造成市场大幅走弱的条件形成，短期内原料方坯、带钢仍 将延续当前震荡形势。
In terms of raw materials, the prices of Tangshan billet and strip steel have been consolidated slightly. Up to April 4, the mainstream quotation for cash-tax-bearing carbon 150 *150 billet in Tangshan market was 3450 yuan (ton price, the same below), which was the same as the same period last week; the mainstream quotation for 355mm series of Tangshan Strip Steel was 3700 yuan, up 10 yuan from the same period last week. During the week, the basic performance of raw materials tends to be strong, but high-price shipments are more difficult, and it is not difficult to continue to rush high. In the later period, the production of billet and strip is expected to increase due to the end of environmental restriction, but the demand itself is not in a weak stage, so there is no condition for the market to weaken substantially. In the short term, the raw billet and strip will continue the current turbulent situation.
镀锌管方面，本周天津镀锌管市场价格窄幅盘整。据了解，近期管厂整体出货尚好，目前本地主流镀锌管厂的日均销售量维持在3000吨以上，本地镀锌 管成品库存较上周变化不大。后期看来，虽然成交尚可，但需求端并不能支持本地镀锌管市场逆势上涨，下周天津镀锌管市场或将跟随上游蒸呢机市场震荡盘整运行。
As for galvanized pipes, the market price of Tianjin galvanized pipes was narrowly consolidated this week. It is understood that the overall shipment of the recent pipe factory is good, the current local mainstream galvanized pipe factory's daily average sales volume maintained at more than 3000 tons, local galvanized pipe finished product inventory changes little compared with last week. Later, although the transaction is still acceptable, but the demand side can not support the local galvanized pipe market to rise against the trend. Next week, Tianjin galvanized pipe market will follow the upstream square pipe market.
据市场监测显示，截至4月4日，宝来产4寸(3.75)蒸呢机出厂价格为4030元，比上周同期上涨20元；友发产4寸 (3.75)蒸呢机出厂价格为4040元，与上周同期持平；君诚产4寸(3.75)蒸呢机出厂价格为4040元，与上周同期持平。利达产4寸(3.75)镀锌 管出厂挂牌价格为5010，比上周同期上涨40元；友诚产4寸(3.75)镀锌管出厂价格为5020元，比上周同期上涨40元；君诚产4寸(3.75)镀 锌管出厂价格为5020元，比上周同期上涨40元。
According to market monitoring, as of April 4, the ex-factory price of 4-inch (3.75) square tubes of Baolai was 4030 yuan, up 20 yuan from the same period last week; the ex-factory price of 4-inch (3.75) square tubes of Youfa was 4040 yuan, equal to the same period last week; and the ex-factory price of 4-inch (3.75) square tubes of Juncheng was 4040 yuan, equal to the same period last week. Lida's 4-inch (3.75) galvanized pipe ex-factory listing price is 5010 yuan, 40 yuan higher than last week's same period; Youcheng's 4-inch (3.75) galvanized pipe ex-factory price is 502 yuan, 40 yuan higher than last week's same period; Juncheng's 4-inch (3.75) galvanized pipe ex-factory price is 502 yuan, 40 yuan higher than last week's same period.
蒸呢机和高效蒸呢机冷弯成型时不同的特点蒸呢机冷弯蒸呢机、冷弯高效蒸呢机是通过外辊与管坯外壁的单向接触形成弯矩使带料弯折,冷弯会使弯折线产生压缩,压缩效应使弯折线纵向伸长,弯折处金属出现堆积变厚,这就是冷弯的压缩/增厚效应。Cold-formed square pipe and cold-formed rectangular pipe bend the strip through the unidirectional contact between the outer rol… 厂家如何防止Q345B蒸呢机焊接的时候变形？…蒸呢机变形首先是焊接Q345B蒸呢机的焊接应力的存在的问题，蒸呢机加工时刻及加工机械节省 因为精度精确，外表状况良好，冷拉钢商品可直接运用，如喷涂、打砂，折弯，钻孔也可按实践需求精拉以后直接电镀，免去了很多加工。 如果想降低变形量或达到理想的尺寸误差范围，首先就焊接时的工件的工装及焊接顺序是必须的，每个焊接完的工…
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