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 :What is the heat treatment process of large-diameter steel pipes Update : 2023-06-06 View(s) : 809
(1) During the heat treatment process, the cause of the geometric change of the large-diameter steel pipe is the heat treatment stress. Heat treatment stress is a relatively complicated issue. It is not only the cause of defects such as deformation and cracks but also an important means to impro...
Keywords :How to solve the phenomenon of "goose head bend" of spiral steel pipe Update : 2023-06-01 View(s) : 1
If the large-diameter spiral steel pipe is processed to a certain length, there must be bending, which is a phenomenon and situation that is often encountered in steel pipes. The large-diameter spiral steel pipe is commonly called "goose head bend" due to the unevenness along the length of the b...
Keywords :Pre-welding and welding essentials of straight seam steel pipe Update : 2023-05-30 View(s) : 925
Pre-welding of straight seam steel pipes : pre-welding includes seams and welds. 1. The joint (that is, the forming seam) has no misalignment or the misalignment is less than the specified value. Generally, the amount of misalignment is ≤ 8% of the plate thickness, and the maximum is not more t...
Keywords :What is the difference between oil casing and oil drill pipe Update : 2023-05-26 View(s) : 890
There are two main differences between oil casing and oil drill pipe: 1. Different uses; 2. Different materials. Oil casing is a steel pipe used to support the walls of oil and gas wells to ensure the normal operation of the entire oil well after the drilling process and completion. Each well ...
Keywords :What is the role of oil casing in the process of oil drilling Update : 2023-05-24 View(s) : 994
Surface casing: install the oil casing head on the top, suspend and support the subsequent layers of the casing through the casing head; isolate the surface shallow water layer and the shallow complex bottom layer, so that the freshwater layer is not polluted by drilling fluid Intermediate ...