郑州方管价格或震荡偏弱运行较昨日无变化4…方管今日郑州市场方管最新价格行情主流走势表现平稳运行，其中友发无垫杠方管30*30*2.5 Q195-Q235的价格：4400元/吨，价格平稳；友发无垫杠方管40*40*2.5 Q195-Q235的价格：4300元/吨，价格较昨日无变化；友发无垫杠方管50*50*2.5 Q195-Q235的价格：4300元/吨，维持昨日价格。The latest price trend of square t…

南京市场方管价格下跌，成交一般。早盘螺纹钢期货低开低走。唐山方坯跌20元，现普碳方坯含税出厂3510元。从当地贸易商了解， 贸易战对市场心态影响较大，除刚需低价有所成交，大多仍处在观望。商家进少出多，以完成销售任务为主。钢厂库存尚无压力，不过价格下调较之前有所放大。综 上所述，预计明日南京市场或继续回落。

In Nanjing market, prices fell and transactions were normal. Early-trading threaded steel futures open low. Tangshan billet fell 20 yuan, and now ordinary carbon billet with tax is 3510 yuan out of the factory. From the local traders, the trade war has a great impact on the market mentality. Most of them are still on the sidelines, except for the bargain just needed at a low price. Businessmen come in less and go out more, mainly to complete sales tasks. There is no pressure on steel mill stocks, but the price reduction has been enlarged. In summary, the Nanjing market is expected to continue to decline tomorrow. 价格方面：截止发稿时，永钢、沙钢三级大螺纹4210元(吨价，下同)，跌50元。

Price: Up to the time of submission, Yonggang and Shagang three-level large threads 4210 yuan (ton price, the same below), down 50 yuan.

广州方管价格或盘整趋弱运行市场出货趋弱方管广州市场方管价格趋弱调整。期螺弱势震荡尾盘小幅回拉，原材料方面现昌黎普碳方坯含税出厂3590跌10。今日广州方管市场出货趋 弱，本周当地库存消化速度环比上周明显放缓，市场方管厂家迫于出货压力相继下调价格，然降价后成交依然未有明显起色。近期广东天气频繁发生强降雨部分地区甚至 严重积水淹没街道和交通，一定程度上也… 厂家分析介绍镀锌方管热处理的十个要点方管镀锌方管热处理的十个要点：一、镀锌方管及夹具在热处理前均应清除油污、残盐、油漆等外来物;二、在真空炉中首次使用的夹具，应预先在不低于工件所要求的真空度下进行除气净化处理;三、在热处理过程中易变形工件，应在专用夹具上进行加热。预热的方法有：一次预热为800℃，二次预热为500-550℃和850℃，一次预热升温度速度应…