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Threeway Steel Co., Ltd

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How to deal with the natural gas pipeline-interface

How to deal with the natural gas pipeline-interface

Keywords :How to deal with the natural gas pipeline-interface        Update : 2022-04-25        View(s) : 122

(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...

The difference between high frequency welded steel pipe and straight-seam welded steel pipe

The difference between high frequency welded steel pipe and straight-seam welded steel pipe

Keywords :The difference between high frequency welded steel pipe and straight-seam welded steel pipe        Update : 2022-04-22        View(s) : 113

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...

What types of oil pipelines are there

What types of oil pipelines are there

Keywords :What types of oil pipelines are there        Update : 2022-04-20        View(s) : 82

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...

Analysis of Pressure Grade of Carbon Steel Spiral Pipe

Analysis of Pressure Grade of Carbon Steel Spiral Pipe

Keywords :Analysis of Pressure Grade of Carbon Steel Spiral Pipe        Update : 2022-04-18        View(s) : 82

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...

How to cool after the quenching process of large-diameter steel pipe

How to cool after the quenching process of large-diameter steel pipe

Keywords :How to cool after the quenching process of large-diameter steel pipe        Update : 2022-04-14        View(s) : 84

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...

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