Brake Blocks for Rolling Stock

Production of all railway wagon parts, train spare parts, train spark plugs

SPIROL specializes in the manufacture of precision machined AAR Nuts for the railroad industry. SPIROL's Railroad Nuts are held 100% square to the tap. SPIROL's thread pitch diameter allowances are engineered for ease of assembly after plating, yet manufactured to strict standards with specific gages. Each production lot has a unique identification number and is traceable through each manufacturing process back to the original raw material test certificate. SPIROL's Railroad Nuts, otherwise referred to as AAR Clamp Nuts, Binding Nuts, and Gold Test Nuts or AAR Signal Nuts are used in signal lights, crossing bells and terminal blocks.

Bronze clamp casting for railway Huan-Tai specialize in investment castings, sand castings, die castings, gravity castings in material of carbon steel, alloy steel, cast iron, ductile iron, aluminum, bronze and custom material. Typical products include custom casting parts, trailer parts, agricultural gearbox, gear, gear shaft, CNC machining parts, train parts, wear resistant parts, crusher parts like liner plates, bowl liner, jaw plate, mantle, heavy castings, coal mining machinery parts and aluminum castings & bronze castings etc. We strive to provide the high quality castings with tight tolerance and try to avoid defects delivered to our customers. Our inspection: 1.Metal testing and analysis, mechanical properties, microstructure, spectrometer and furnace chemical composition analysis. 2.Non-destruction inspection: MPE, LPE, UE and RE 3.Dimension inspection: well experienced inspector team 4.Quality control 5.3rd party inspection