... 4 Convenient operation Oil transport semi-trailer ItemsUnit specificationProduct name Tri-axle LPG tank semi trailerVolumeM358Gross weightkg40000Curb weight16420Payload weight23580Dimensionmm12995×2500× ... tire,Relief valve cover,Single out fluid double valve box,kingpin,Liquid Indicator,pressure gauge,heat indicator,quick action ... 1998, SAME, ISO9001:2000, ISO9001:2008. oil transport semi-trailer