Na Huang SEO
Because of the advanced technology and the high requirement for devices, and casing service conditions, it is enforced to produce high grade oil casing, like the high quality oil casing ERW steel pipe.

How? There are skills on it for the high quality oil casing pipes’ production.
First, we should set the technical targets of oil casing steel pipe which is the steel grade, high anti-collapse oil casing being developed in engineering project. Like we should figure out the physical and chemical parameters for the steel pipe.
Second, we should make sure the research of the relations between the straightening amount and the residual stress which is in order to meet the requirements for the straightness and the roundness of oil casings.
What's more, the analysis of the rolling process control and comprehensive quality of the products is very important for the choice of the oil steel casing pipe.
http://www.srtsteelpipe.com/newsshow/How-to-make-sure-the-high-quality-o...
Jan 17th 2018 23:47