Marine Opening Porthole
With features of watertight and gastight, this product is used for sea-going ship and warship, and also used for inland ship. The glass of this opening porthole accords with the GB11946 provision. Certificates of this side scuttle are ABS, CS, BV, LR, GL, NK, etc. We can supply various standard sizes, please specify your requirements to us if you have any special demand.
 
Specifications:
1. Material: steel/stainless steel/aluminum/brass
2. Standard: GB/T14413-93
3. Glass standard: GB11946
4. Diameter(mm): 200/250/300/350/400/450
5. Size of clear: 200/250/300/350/400/450
6. Size of opening: 250/305/360/410/460
7. Main types: heavy, medium, light
8. OEM service is available