High-Pressure Fertilizer Equipment Alloy Steel Pipe

• ​Introduction

High-pressure fertilizer equipment alloy steel pipes are specialized tubes designed for high-stress environments in fertilizer production, such as ammonia synthesis and urea processing. These pipes withstand extreme pressures , high temperatures , and corrosive media (e.g., H₂, N₂, NH₃). They are critical for ensuring safety and efficiency in fertilizer plants.

• ​Main Functions

It is mainly used to transport high – temperature and high – pressure fluids such as synthetic ammonia, urea, and methanol in fertilizer equipment. It ensures the stable operation of fertilizer production equipment, improves production efficiency, and is of great significance for the continuous and efficient operation of the entire fertilizer production process.

• ​Tubing Standard

ASTM A335； EN 10216-2； GB 6479.

• ​Material & Performance

P5,P11,P22,P91； 10CrMo5-5，13CrMo4-5，10CrMo9-10，X10CrMoVNb9-1； 12Cr5Mo，15CrMo，12Cr2Mo，10Cr9Mo1VNbN.

Pressure Containment: Resists internal pressure from gases/liquids during fertilizer synthesis. Corrosion Resistance: Endures attack by acidic/alkaline chemicals (e.g., urea, ammonium nitrate). High-Temperature Stability: Maintains structural integrity under thermal cycling.

• ​Manufacturing Process

Raw Material Preparation：High-purity alloy steel billets are selected and inspected for chemical composition and impurities.

Hot Rolling：The billet is heated and rolled into a hollow tube via a piercing mill, or extruded to form the initial pipe shape.

Heat Treatment： Normalizing：Improves microstructure and mechanical properties. Tempering：Reduces internal stress and enhances toughness.

Cold Drawing/Expanding (Optional)：Fine-tunes dimensions and surface finish for precise applications.

Non-Destructive Testing (NDT)：Ultrasonic testing (UT), eddy current testing (ET), and hydrostatic pressure testing are conducted to ensure freedom from defects.

Surface Treatment：Deburring, coating, and marking for identification and protection.

• Specifications