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