Threaded Fittings HITACHI & JIANZHI Material: Malleable Iron , Black and GalvanizedClass: 150 (300 on demand)Size Range: ½” to 4”Thread: BSPT, NPTStandard: ANSI, ASME.B16.3, B16.14 B16.39 U/L Listed – FM approved.Origin: Thailand & China FORGED Steel FITTINGS – BOTHWELL Material: Forged SteelClass: 3000 (6000, 9000 on demand)Size Range: 1/8” to 4”Thread: NPTStandard: ASME B16.11-2011. MSS SP-79, 83 , 95, 97 & BS 3799Origin: Taiwan