shenlong created a new blog entry
on January 30 2023 at 07:02 AM public
Overview of high-density slotted sand control screen
The high-density punching screen is composed of a central pipe, a high-density punching sleeve and a stainless steel ring. It has the characteristics of precise and controllable porosity, large...
shenlong created a new blog entry
on December 08 2022 at 09:32 AM public
Service conditions of oil casing
Petroleum special pipe is mainly used for oil, gas well drilling and oil, gas transportation. It includes oil drill pipe, oil casing, pumping pipe. The oil drill pipe is mainly used to connect...
shenlong created a new blog entry
on November 16 2022 at 08:18 AM public
Welding method for weld neck flanges
Weld neck flange welding has two methods: continuous arc method and arc extinguishing method. 1.  Weld neck flange arc method is the operation method of short arc welding by continuously and...
shenlong joined WhereWeChat
on November 16 2022 at 08:15 AM public
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