Several sets of powered fixed longitudinal conveyors and non-powered fixed longitudinal conveyors, four sets of hydraulic buffer units and five sets of height adjustable longitudinal conveying rollers form a longitudinal conveying line. Its main function is to lift and lower the subsea pipeline from storage area to buffer unit, then conveys it longitudinally to the lateral transfer area. Main technical specifications:  

       Min. pipe diameter：4 in

       Max. pipe diameter：60 in

       Single node pipe segment：12.2 m

       Double node pipe segment：24.4 m

       Single node pipe mass：400 kN

       BOP Height：1700-1900 mm

       Buffer stroke：25 mm

       Lifting stroke and time：200 mm/5S

       Longitudinal pipe conveying speed：30 m/min

       Max. longitudinal pipe conveying speed：30 m/min