Threeway Steel Co., Ltd
E-mail: sales@srtsteelpipe.com
Address: 22nd Floor, Royal Wing Tower, Long Champ International Building, No.9 Xiangfu Road, Changsha, Hunan, China, PC: 410116Phone:0086-731-8873-9521
Keywords :How to deal with the natural gas pipeline-interface Update : 2022-04-25 View(s) : 885
(1) Gas pipeline preparation before construction ①Although the melting point of molten lead refined lead is 327℃, due to the operation in the open air, there is a certain distance between the molten lead and the pouring interface. Considering the temperature drop of molten lead during transpor...
Keywords :The difference between high frequency welded steel pipe and straight-seam welded steel pipe Update : 2022-04-22 View(s) : 969
1. Different nature A. High-frequency welded steel pipe : After the hot-rolled coil is formed by the forming machine, the skin effect and proximity effect of high-frequency current are used to heat and melt the edge of the tube blank, and pressure welding is performed under the action of the ex...
Keywords :What types of oil pipelines are there Update : 2022-04-20 View(s) : 706
There are two types of oil pipelines : crude oil pipelines and refined oil pipelines . Different oil products are conveyed, and the conveying process is also different. Crude oil is generally relatively heavy, viscous, and easy to solidify; and refined oil is divided into gasoline, kerosene, d...
Keywords :Analysis of Pressure Grade of Carbon Steel Spiral Pipe Update : 2022-04-18 View(s) : 723
The pressure ratio of the spiral steel pipe on the gas pipeline also has a downward trend. For pipe diameter, pressure, and pressure ratio, it is necessary to carry out optimization calculations and comparisons. When the transmission volume is determined, after the pipe diameter, pressure, and p...
Keywords :How to cool after the quenching process of large-diameter steel pipe Update : 2022-04-14 View(s) : 740
1. What is the heat treatment process of large-diameter steel pipes ? (1) During the heat treatment process, the reason for the change in the geometry of the large-diameter steel pipe is the effect of heat treatment stress. Heat treatment stress is a relatively complex problem. It is not only...