1.GB16897-1997,China3Ccertisfied 2.Work in -40--+120degree 3.OEM services 4.Excellet anti-abrasion and mechanical property JJW air brake hose has features of smooth inner wall,quick air breaking , less pressure lost, wear-proof,anti-aging and good flexible,etc. It is widely used in large scale on pipeline connections on various tractor trucks, semi-trailers, trailers and all kinds of air brake ...