... million kinds of brake hose fittings 2.Material: steel 20# or Q235 3.Control by SAE J512 Standard ... .The raw material is usually steel 20, coated yellow Zinc. Commoditybrake hose fittingsMaterialMild steel, stainless steel, aluminum, copperThread standardsMetric: M10X1 ... heading; casting,OtherMetal accessories, rubber accessories, plastic accessories hydraulic brake hose carbon steel pipe fitting