High pressure carbon steel with zinc trivalent anti-corrosion coating National Pipe Straight Mechanical NPSM mates with NPTF pipe fittings and adapters. Female NPSM fittings have a straight thread and 30° seat which creates a metal to metal connection in
metal printer Parameter Details 1. Certified accessories Accessories of Ink system are certified by ink supplier, without chemical reaction with ink. 2. High precision print head base board. Print head base board is OEM by professional factory, high-preci