DIN 2391 ST52 hydraulic steel pipe is a precision cold-drawn seamless steel pipe with an outer diameter range of 16-325mm and a wall thickness of 1-22mm.
Due to the cold drawing process, the inner and outer walls of DIN 2391 ST52 cold-drawn precision steel pipe are very smooth, which reduces the resistance of the fluid in the pipeline and improves the efficiency of the system.
DIN 2391 ST52 precision steel pipe is mainly used in hydraulic systems, including but not limited to injection molding machines, hydraulic presses, marine, shipbuilding industry, air compressors, construction machinery and other fields.
ST52 Seamless Pipe Chemical Composition
| Standard | Grade | C | Si | Mn | P max | S max |
| DIN2391 | St52 | ≤0.22 | ≤0.55 | ≤1.6 | 0.025 | 0.025 |
Physical Properties of ST52 Hot Rolled Carbon Steel Seamless Pipe
| Yield Strength | 520 Mpa Min. |
| Tensile Strength | 600 Mpa Min. |
| Elongation | 14% Min. |
Carbon Steel DIN 2391 ST52 Pipe
Production Process
①Main production processes of hot-rolled seamless steel pipes (△Main inspection processes):
Preparation and inspection of tube blank △ → heating of tube blank → perforation → pipe rolling → steel pipe reheating → diameter determination (reduction) → heat treatment △ → finished pipe straightening → finishing → inspection △ (non-destructive, physical and chemical, Taiwan inspection) → warehousing
②The main production processes of cold-rolled (drawn) seamless steel pipes:
Blank preparation→pickling and lubrication→cold rolling (drawing)→heat treatment→straightening→finishing→inspection
Gnee Steel Co., Ltd. is an industrial and trade enterprise with high influence in China's steel industry, covering an area of 35,000 square meters and specializing in steel production for 15 years. The company has a warehouse of 20,000 square meters. Products include seamless steel pipes, rebars, galvanized steel pipes, stainless steel pipes and other 12 product categories and 36 steel types. The company's inventory of steel exceeds 50,000 tons.
Gnee Company Team
Gnee Factory environment
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