Marine doors are made of aluminum, steel, stainless steel or combination of them according to ISO standard. The doors have been used on a workboat, ships and barge and are closing the device of marine ships' entrance. There are two installation means bolted and welded. Most of the doors are welded type. There will be a marine watertight door, marine cabin hollow door and marine fire-rated door. The marine doors are for sale at YSmarines which is one of the leading suppliers in china for top quality marine products. All doors produced by YSmarines have IACA certificate of CCS, BV, ABS, DNV-GL, LR, NK, CCS, etc.