Round Adjustable Split Pipe Dies

WESTport Round Adjustable Split Dies – Special Pipe are precision-engineered for producing, repairing, and restoring external pipe threads where exceptional accuracy and adjustability are required. Designed with a precision split construction, these dies allow for slight adjustment during threading, enabling machinists to compensate for wear, produce more accurate thread sizes, and fine-tune thread fit for demanding industrial applications. They are an excellent choice for both production machining and thread repair where precision pipe threads are essential.

Unlike solid dies, adjustable split dies provide greater flexibility by allowing the thread diameter to be expanded or compressed slightly during operation. This design makes them ideal for applications requiring precise thread tolerances or when chasing existing pipe threads without removing excessive material. WESTport manufactures Special Pipe Split Dies for numerous pipe thread standards, including NPT, NPTF, BSPT, BSPP, ANPT, NPSM, and other special thread forms. Custom diameters, pitches, outside diameters, and special configurations are available to meet virtually any customer requirement.

Every WESTport Round Adjustable Split Die is manufactured from premium High-Speed Steel (HSS) or other high-performance tool steels selected for exceptional wear resistance and long service life. Precision grinding produces sharp cutting edges, accurate thread profiles, and excellent dimensional consistency. Optional premium surface treatments and coatings are available for applications involving abrasive materials, stainless steels, high-strength alloys, or extended production runs.

These dies are widely used by manufacturers, maintenance departments, machine shops, plumbing contractors, hydraulic equipment manufacturers, oil and gas companies, and industrial service organizations. Whether producing new threaded pipe components or restoring damaged threads in the field, WESTport Round Adjustable Split Dies provide dependable performance while allowing users to fine-tune thread dimensions for proper fit and sealing performance.

Since 1989, WESTport has supplied precision thread gages, custom taps and dies, hardness testing equipment, metrology products, and ISO/IEC 17025 calibration services to manufacturers throughout North America and around the world. Our engineering expertise and commitment to quality ensure every threading product meets the demanding standards of modern manufacturing.

Benefits

• Allows precise adjustment of thread fit
• Produces accurate, repeatable external pipe threads
• Excellent for thread repair and thread chasing
• Extends die service life through adjustable design
• Improves thread quality and sealing performance
• Suitable for production and maintenance work
• Custom manufactured for specialized applications
• Reliable performance in demanding industrial environments

Typical Applications

• External pipe thread cutting
• Pipe thread repair
• Hydraulic systems
• Pneumatic systems
• Oil and gas equipment
• Valve manufacturing
• Industrial piping
• Process equipment
• Maintenance departments
• Precision machine shops

Technical Information

WESTport Round Adjustable Split Dies feature a precision split design that allows controlled adjustment of thread size to compensate for tool wear or achieve specific thread tolerances. Available in numerous pipe thread standards and custom configurations, these dies provide superior flexibility compared to solid dies while maintaining excellent thread accuracy and cutting performance. Premium tool materials and precision manufacturing ensure long service life and dependable performance across a wide range of industrial threading applications.

Why Choose WESTport?

For more than 35 years, WESTport has been a trusted supplier of precision thread gages, taps, dies, metrology products, hardness testing equipment, and ISO/IEC 17025 calibration services. Our experienced engineering team works closely with manufacturers to provide custom thread-cutting solutions that improve productivity, extend tool life, and consistently produce precision threads. Whether your application requires a standard adjustable die or a completely custom threading solution, WESTport delivers the quality, technical expertise, and responsive customer support manufacturers have trusted since 1989.