Pipe industry

USA

Solid carbide thread mills

National Pipe Taper 60° : NPT - NPTF
Straight Pipe Mechanical : NPSM
Straight Pipe : NPSF - NPSI
British Straight Whitworth : BSW
British Straight Pipe : BSP - G - Rp - BSF
British Pipe Taper : BSPT - R
Knuckle thread : RD
Electric tube  thread : PG

Thread mill inserts

Straight Pipe Mechanical : NPSM
Straight Pipe : NPSF - NPSI

Triangular threading inserts

Pipe thread : API RD

EUROPE

Solid carbide thread mills

(National Pipe Taper 60° : NPT - NPTF)
Straight Pipe Mechanical : NPSM
Straight Pipe : NPSF - NPSI
(British Straight Whitworth : BSW)
(British Straight Pipe : BSP - G - Rp - BSF)
(British Pipe Taper : BSPT - R)
Knuckle thread : RD
Electric tube  thread : PG

Thread mill inserts

(National Pipe Taper 60° : NPT - NPTF)
Straight Pipe Mechanical : NPSM
Straight Pipe : NPSF - NPSI
(British Straight Pipe : BSP - G - Rp - BSF)
(British Pipe Taper : BSPT - R)

Triangular threading inserts

(British Straight Pipe : W (BSW) BSP – G – Rp – BSF)
(British Pipe Taper : BSPT – R)
Knuckle thread : RD
(National Pipe Taper 60° : NPT – NPTF)
(Pipe thread : API RD – API V-0.040/V-0.038R/V-0.050 – API BUT – VAM – EL)