Yearly Archives: 2022
Non-uniform Bearing of Oil Casing Reduces its Bearing Capacity
Oil casing pipe damage is one of the important factors affecting China's crude oil production. The reasons for its damage include non-uniform stress, corrosion, sand formation in oil layers, and high-...
Difference Between ERW Steel Pipe and Seamless Steel Pipe
The biggest difference between ERW steel pipe and seamless steel tube is that ERW has a weld seam, which is the key to the quality of ERW steel pipe. Modern ERW steel pipe production technology and eq...
Oil Casing Processing Production Technology
1) Tube appearance inspection
There are two kinds of raw material sources for casing tube blanks, one is seamless tube blank, and the other is ERW tube blank. The above blanks should be inspected as f...
Oil Casing In-Plant Inspection: Defect Handling
Oil casing pipe in-plant inspection: defect handling
Various defects found in the pipe body or pipe end that affect the performance of the pipe, such as pits, cracks, folds, bumps, bumps, gouges, d...
Analysis of Length Measurement Method of Seamless Steel Pipe
1. Gage length measurement
The basic principle is: two fixed-length grating rulers are set on the outer sides of the two ends of the seamless steel tube, and the rod ruler is used to drive the grating...
3PE Coating Anti-corrosive Steel Pipe
Material analysis of 3PE anti-corrosive steel pipe
3PE anticorrosive steel pipe base material includes seamless steel pipe, spiral steel pipe and straight seam steel pipe. The three-layer structure po...
Forming Process of Straight Seam Steel Pipe
Straight seam steel pipe is a steel pipe with welds parallel to the longitudinal direction of the steel pipe. It is usually pided into metric welded steel pipes, welded thin-walled pipes, transformer ...
Anti-corrosion Steel Pipes are Mostly Spiral Steel Pipes
In recent years, anticorrosive steel pipes have begun to be widely used in the construction of water and natural gas pipelines. Anti-corrosion steel pipes are usually selected from spiral steel pipes....
Frequently Encountered Problems with High Frequency Straight Seam Welded Pipe(ERW)
Nowadays, high-frequency straight seam welded pipes (ERW pipe) are mainly used in water supply engineering, power industry and petrochemical industry, etc. There are many types of water pipes used in ...
What is Casing and Tubing?
Tubing naturally has a smaller diameter than casing pipe, except for the 4 1/2-inch diameter. An outer diameter of 114.3 mm (4 1/2 inches) is considered a threshold and can be either casing or tubing....
