M.T.M. VALVES are manufactured in the following materials:
carbon steel ASTM A105 and low carbon steel ASTM A350 Gr. LF2, alloy steel ASTM A182 F5, F11, F9, F22, inox stainless steel ASTM A182 F316, F316L, F304, F304L, F347, F321 duplex stainless steel ASTM A182 F51, F53, F55 and austenitic steel 6Mo ASTM A182 F44, and high nickel alloy steel as MONEL, HASTELLOY, INCOLOY, TITANIUM, INCONEL, strictly in accordance with NACE MR-01-75 standard, when required.

Every M.T.M. VALVES gate and globe valve is subjected to shell backseat and high and low pressure closure tests. Check valves are given shell and high pressure closure tests fully in accordance with API 598 and ASME B16.34 standards.

Also, under request, it is possible check the valves with magnetic particle inspection, dye penetrant, ultrasonic test, mechanical and chemical analysis, positive material identification, destructive tests, fugitive emission test, low temperature test.