... types of hatch cover. GL, LR, DNV, BV, ABS and CCS approval We can lift the large unit to 200ton. hatch cover ... We have approved by GL, LR, DNV, BV, ABS and CCS Material is by special high tension plate approved by the ... marine society like GL, LR, DNV, BV, ABS and CCS NDT for all the important welds Sandblasted to at least ...