China Marine Aluminum Quick Acting Weathertight Door with Central Handwheel: Standard: CB/T3477-96 for reference
China Marine Aluminum Weathertight Door with 6 Dog Lock: Standard: CB/T3477-1996
China Marine Weathertight Door Stainless Steel Dog Lock: The dog lock is used on the marine weathertight door CB/T3477 or hatch cover.
Marine Single-Leaf Aluminum Weathertight Door Drawing China Marine Single-Leaf Aluminum Weathertight Door: Standard: CB/T454-97
China Marine Steel Quick Acting Weathertight Door with Single Lever: Standard:GB/T3477-1996 for reference
China Marine Aluminum Quick Acting Weathertight Door with Single Lever: Standard: GB/T3477-96 &CB/T454-97 for reference.
China Marine Steel Weathertight Door (Square Corner):
China Marine Steel Weathertight Door (Round Corner):
FRP Weathertight Door This door is made of FRP. What is FRP? It is fiber reinforced plastics.