1.Hot-rolled seamless steel pipe main production process (the main test proess):
Tube blank preparation and inspection → tube heating → perforation → rolling pipe → reheating reheating → fixed (minus) diameter → heat treatment → finished pipe straightening → finishing → inspection (lossless, physical and chemical, Taiwan inspection) → storage
2.The main production process of cold - rolled (pull) seamless steel pipe
Ingredients → Pickling Lubrication → Cold Rolling → Heat Treatment → Straightening → Finishing → Inspection
Hot - rolled seamless steel pipe production process flow chart
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