HVG MARINE OUTFITTING EQUIPMENT 0220: 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. 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