... 2.Factory direct 3.design pressure 1.77Mpa 58.5CBM LPG semi trailer with insulation panel1.BPW ... BPW axle, safety valve,single fluid two valve box. hydraulic legs, traction pin, liquid Indicator,pressure ... gauge,temperature gauge,emergency cut-off valve,valve box,fire suppression bottle,spark hider cover,anti static ... trailer, LPG storage tank in China. 58.5CBM LPG semi trailer with insulation panel