Oil & gas industry

USA

Solid carbide thread mills

National Pipe Taper 60° : NPT - NPTF        BSW

Thread mill inserts

National Pipe Taper 60° : NPT – NPTF
British Straight Pipe : BSP – G – Rp - BSF
British Pipe Taper : BSPT – R

Triangular threading inserts

Pipe thread : API       RD