The definition of seamless steel pipe is: a steel pipe made of a single piece of metal without seams on the surface.
Seamless steel pipes are carbon structural steels with low hardness and easy machining.
In order to avoid scarring defects in hot-rolled seamless steel pipes, we must first learn to use deoxidizers.
Seamless steel pipes must be stored in Shihe's site and warehouse to ensure the quality of the period, so how to choose a site and warehouse suitable for seamless steel pipe storage?
Seamless steel pipe is a long strip of steel with a hollow section and no joints around it.
Drawing (rolling) seamless steel pipe: round tube billet →heating→piercing→heading→annealing→pickling→oiling (copper plating)→multi-pass cold drawing (cold rolling) →Blank tube→Heat treatment→Straightening→Hydraulic test (flaw detection)→Mark→In storage.
A few days ago, the first batch of 330 spiral seam submerged arc welded pipes weighing 1,520 tons and worth 2.79 million US dollars produced by Jiangsu Tongyu Steel Pipe Group Co. Central Asia gas pipeline project under construction.
On the morning of July 28, 2013, all the supply and marketing company, finance department, human resources department and logistics staff of Tongyu Steel Pipe Group Co., Ltd. came to the company conference center to summarize the sales situation of the supply and marketing company in the first half of the year under the scorching sun.
At 9:30 am Eastern Time on the 8th (22:30 Beijing Time on the 8th), Yangzhou Yalian Steel Pipe Co., Ltd. opened trading on the Toronto Stock Exchange in Canada. This is the first company in our city to be successfully listed overseas.