... 150*150*16 420*200 1870(mm) Darong Single Point Suspension specification Type Rated Load(kgs) Axle tube(mm) Track(mm ... semi-triailers in the Asian market as well as semi-trailer BPW/American axle assembly,axle tube, the single point suspension ,tandem ... brand, including axle, BPW/American axle assembly, the single point suspension systems, outboard/inboard drum axle assembly ,spoke axle assembly and ...