Z1t-R4 Electric Pipe Threading Machine Tube Threader with Working Range 1/2"-4". Heavy Duty Construction: Designed for heavy-duty pipe threading with robust machine body and motor. Wide Working Range: Handles pipe sizes from 1/2 inch to 4 inches with HSS bolt dies. Efficient Electric Drive: 750W motor with 24 RPM rated speed for fast and easy thread processing. Automatic Cooling System: Integrated cooling system automatically sprays oil during cutting. Complete Accessory Kit: Includes dies, oil, screwdriver, and legs for immediate operation. OEM and ODM Services: Offers full customization, minor customization, and sample-based design options. CE Certified Quality: Product meets CE certification standards for safety and performance. 100% Final Inspection: Every finished product undergoes visual and function inspection before shipment.