Bolted Type Aluminum Porthole
Product description:
1. Standard : GB/T14413-93
2. Material: aluminum
3. With/without deadlight, Watertight and gastight
4. Opening: fixed bolted
5. Used for sea-going ship and warships also could used for inland ship
6. Main types: medium type and light type
7. CCS, ABS, BV, DNV certificates is available