... .Surface oxidation treatment 3.supply CCS,ABS,DNV,GL.... marine aluminium accommodation ladder Product instruction: Design, manufacture according with ... 168001470058194001740015100Two-pieces adjustable ltube, lazy arm, pillar)l Fastening device (Fastening device, Fastening hooks, Support ... tube)l Safety net Repair: Skew, damage, distorted of gangway after a collision , ...