购买方管时最实用的三种方管理论重量计算方法方管的三种理论重量算法：关于方管的重量的计算方法，总共有三种方式。第一种，就是用钢板算法，也就是，将一个正跟的方管展开，然后形成一个四片扁钢，然后在对扁钢进行计算。这种计算方法计算出来的重量，会与…

北京市场方管价格小幅跟涨。今日原料钢坯以及带钢价格一早就出现拉涨，受此带动，北京市场方管价格小幅跟涨，涨幅20元。但据贸易商反馈，今日是“五一”小长假前的最后一 天交易日，市场总体成交不畅，终端采购放慢采购计划，个别公司已经放假。因此总体来看，市场有价无市，五一期间没有期货的指导，价格或报稳为主。

The price of market management in Beijing has been rising slightly. Today, the price of raw material billet and strip steel has risen in the early morning. Driven by this, the price of square pipe in Beijing market has risen slightly, by 20 yuan. However, according to TRADERS'feedback, today is the last day of trading before the May Day holiday. The overall market turnover is not smooth, terminal procurement slows down the procurement plan, and individual companies have taken vacations. Therefore, in general, the market has no market value, no futures guidance during the May Day period, the price or stability of the main.

价格方面：本地1寸(2.5mm)方管价格为4610元(吨价，下同)，4寸(3.75mm)方管价格为4450元(吨价，下同)，6寸(4mm)方管价格为4640元；市场整体报价比昨日上涨20元。

Price: Local 1-inch (2.5mm) square tube price is 4610 yuan (ton price, the same below), 4-inch (3.75mm) square tube price is 4450 yuan (ton price, the same below), 6-inch (4mm) square tube price is 4640 yuan; the overall market price is 20 yuan higher than yesterday.

　　潍坊方管价格或将窄幅震荡运行市场成交较弱本周潍坊方管市场价格平稳运行，市场成交较弱。本周潍坊地区市场到货依然偏少，库存继续下降，整体供应压力并不大。本周期货以价格大幅下跌， 对方管市场信心形成冲击，方管商户低价卖货情况有所增加，拖累整体市场价…