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Diameter: Depending on the application requirements, usually ranges from a few millimeters to several tens of centimeters. Length: Related to the diameter and application, customizable. Material: Carbon steel, stainless steel, alloy steel, etc. Thread: Single-start, multi-start, with various pitches. Treatment: Surface hardening, nitriding, etc. Application: Extrusion, injection molding, conveying, etc.
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