American Standard

Material: ASTM A 197; A153
Dimension: ANSI/ASME B16.3; B16.14; B16.39
Thread: ANSI/ASME B1.20.1; NPT
Size: 1/8 - 6"

British Standard

Material: EN 1562; ISO 1460
Dimension: BS EN 10242; BS 143 & 1256
Thread: ISO 7-1; BS 21; BSPT
Size: 1/8 - 6"