Conical hand and machine taps made of high-speed steel (HSS) are designed for threading pipes according to the American NPT-BSPT profile in compliance with ANSI B1.1 standard. Their conical geometry...
Conical hand and machine taps made of high-speed steel (HSS) are designed for threading pipes according to the American NPT-BSPT profile in compliance with ANSI B1.1 standard. Their conical geometry...