1) range: 15 NB to 600 NB in sch. 5, 10, 20, 30, 40, 60, 80, 100, 120, 140, 160, xxs
2) material: stainless steel, carbon steel, alloy steel, M. S. & g. I., nickel alloy, copper, brass etc.
3) standard: ASTM a-312, ASTM a-358, ASTM a-106 gr. B, ASTM a-333 gr. 6, bs 3059, ASTM a-53, API 5l,
ASTM a-335, uns & bs standard etc.
4) form: round, square, rectangle, hydraulic, horn tube etc
5) value