News
Causes of Cracks Occurred in Welding of X80 pipeline steel [10-26]
When the welding process of X80 pipeline steel is unreasonable, or the number of inclusions in the base metal is large, the shape and distribution are uneven, cracks are easy to form in the HAZ near the fusion line at the weld toe.
Application and Development Prospect of X80 Pipeline Steel [10-19]
In the fierce market competition, all oil companies in the world are constantly looking for ways to reduce costs and improve efficiency.
Effect of Inclusions on X70 Pipeline Steel [10-09]
The performance of X70 pipeline steel mainly depends on its chemical composition and structure. Inclusions in X70 pipeline steel mainly exist in the form of non-metallic compounds, such as oxides, sulfides, nitrides, etc., which can cause uneven microstru
Harm of inclusions in X70 pipeline steel [09-30]
Inclusions in X70 pipeline steel mainly exist in the form of non-metallic compounds, such as oxides, sulfides, nitrides, etc. Non-metallic inclusions have a great influence on the strength, plasticity, toughness and other properties of X70 pipeline steel.
Comparison of quality standards between PSL1 and PSL2 [09-21]
In the API 5L steel pipe standard, the quality standards (or requirements) of steel pipes are divided into PSL1 and PSL2. PSL is an abbreviation for product specification level. PSL1 provides general pipeline quality level requirements; PSL2 adds mandator
Brief introduction of API X52 pipeline steel [09-14]
X52 pipeline steel is a wide and thick steel plate for oil and gas pipelines. With the continuous development of oil and gas and other energy sources, the use of X52 pipeline steel to transport oil and gas and other energy has the advantages of high effic
Refining Process of X80 Pipeline Steel [09-03]
X80 pipeline steel has very strict requirements on the control of harmful elements and inclusions in the steel. In production, the production process of refining outside the furnace is often used to ensure the purity of X80 pipeline steel. The refining eq
Effect of Inclusions on X70 Pipeline Steel [08-21]
Inclusions have little effect on the longitudinal extension of X70 pipeline steel, but have a significant effect on the transverse extension. The transverse section reduction rate of X70 pipeline steel decreases significantly with the increase of the tota
Application and Development Prospect of X80 Pipeline Steel [08-21]
In the fierce market competition, all oil companies in the world are constantly looking for ways to reduce costs and improve efficiency.
Method for detecting welding quality of Q345B seamless steel pipe [07-24]
After the Q345B seamless steel pipe is welded, the thermal hardness test of the weld should be carried out. The evaluation standard is that the thermal hardness of the weld of the Q345B seamless steel pipe does not exceed 100 of the hardness of the base m
Q345B large diameter seamless steel pipe [07-17]
Q345B large-diameter seamless steel pipe is a long steel material with a hollow cross-section and no joints that is processed by rolling or cold drawing with seamless steel pipe as the base material.
The difference between hot rolling and cold drawing of A53 steel [07-11]
The difference between hot rolling and cold drawing of A53 steel is the difference in production process. The hot rolling of A53 steel is processed at high temperature, which will not change the structural properties of the metal. The cold drawing of A53
How is the seamlessness of A53 steel pipe formed? [07-05]
The seamlessness of A53 steel pipe is mainly accomplished by tension reduction, which is a continuous rolling process of hollow base metal without mandrel.
Briefly describe the production process of A53 steel pipe [06-26]
A53 seamless steel pipe is a material of American standard steel pipe, in which A53-A is equivalent to domestic 10# steel, A53-B is equivalent to domestic 20# steel, and A53-F is equivalent to domestic Q235 material.
Processing flow of Q195 steel [06-12]
Q195 steel belongs to carbon structural steel. It has excellent plasticity, toughness and welding performance. The disadvantage is that its strength is relatively low, but it is very convenient to process. The common Q195 steel processing process is as fo