• Improper welding of X80 pipeline may cause cracks
• Brief introduction of API X52 pipeline steel
• The difference between PSL1 and PSL2
• Harm of inclusions in X70 pipeline steel
• API 5L pipeline pipe
• X52 steel plate surface quality standards that need to be met
• The basic production process of API 5L X60 pipeline steel
• The key to Q460D steel welding process
• What does the heat treatment of Q690 Steel include?
• Reasons for choosing Q690D steel

Performance that API 5L X52 PSL2 pipeline steel should have

1. High intensity. The strength indicators of API 5L X52 PSL2 pipeline steel mainly include tensile strength and yield strength. While requiring high strength, there are also requirements for the yield ratio (ratio of yield strength to tensile strength) of API 5L X52 PSL2 pipeline steel, which is generally required to be in the range of 0.85 to 0.93.

2. High impact toughness. API 5L X52 PSL2 pipeline steel requires that the material should have sufficiently high impact toughness (crack initiation and crack arrest toughness). For the base metal, when the toughness value of the material meets the requirements for crack arrest, the toughness of API 5L X52 PSL2 pipeline steel can generally meet the requirements for preventing crack initiation.

3. Low ductile-brittle transition temperature. Harsh regional and climatic conditions require API 5L X52 PSL2 pipeline steel to have a sufficiently low ductile-brittle transition temperature. Shear area has become the main control indicator to prevent brittle failure of pipelines. General specifications require that the shear area of ​​the fracture surface of the specimen at the lowest operating temperature F is not less than 85%.

4. API 5L X52 PSL2 pipeline steel should have excellent hydrogen-induced cracking (HIC) and sulfide stress corrosion cracking (SSCC) resistance.