Norseman Drill & Tool Type I30-B Black Oxide Finish Interrupted Taper NPT Pipe Taps

Norseman Drill & Tool Type I30-B Black Oxide Interrupted Taper NPT Pipe Taps

Reliable Pipe Threading for Cast Iron and Ductile Materials

The Norseman Drill & Tool Type I30-B Black Oxide Finish Interrupted Taper NPT Pipe Taps are engineered for dependable, high-efficiency pipe threading in demanding industrial environments. Designed with an interrupted thread profile and finished with a durable black oxide coating, these taps provide excellent performance when cutting National Pipe Taper (NPT) threads in cast iron and other ductile materials.

Manufactured from premium high-speed steel (HSS), the Type I30-B series delivers strength, toughness, and consistent cutting accuracy for professional machinists, maintenance teams, and fabricators.

Interrupted Thread Design for Improved Chip Control

The interrupted thread geometry is a key advantage of the Type I30-B pipe taps. By removing sections of the cutting thread, this design significantly improves performance by:

• Reducing cutting friction and torque

• Increasing chip capacity

• Enhancing coolant flow to the cutting edges

• Minimizing chip packing and binding

This makes the tap especially effective in soft or ductile materials that generate long, stringy chips, where standard taper pipe taps can struggle.

Black Oxide Finish Optimized for Cast Iron

The black oxide finish provides controlled lubricity and corrosion resistance while helping retain cutting oils during operation. This coating is particularly well suited for cast iron applications, where lubrication retention and chip breakage are critical for clean, accurate threads. The result is smoother cutting action, reduced tool wear, and consistent thread quality.

Ideal for Industrial and Maintenance Applications

Norseman Type I30-B Interrupted Taper NPT Pipe Taps are widely used for threading pipe fittings and couplings in plumbing, HVAC, foundry operations, fabrication shops, and MRO environments. They perform exceptionally well on cast iron, mild steel, aluminum, brass, bronze, and other ductile metals.

Precision NPT Threads with Long Tool Life

Each Type I30-B tap is precision-ground to produce accurate NPT taper threads that ensure proper sealing and fit in pressure-rated connections. For professionals who need reliable chip control, reduced cutting resistance, and proven performance on cast iron, Norseman Drill & Tool Type I30-B Black Oxide Interrupted Taper NPT Pipe Taps are a trusted, cost-effective solution for industrial pipe threading.