Marine Heavy Type Steel Porthole
Introduction
Marine heavy type steel port is kind of a porthole that can withstand water pressure over 100Pa. It’s suitable for the places below the dry deck above the full water line and with watertight&gastight requirements.
Specifications of Marine Heavy Type Steel Porthole
clear size D
D1
D2
D3
D4
D5
h
t
bolt
heavy
whorl
qty
φ200
φ245
φ204
φ250
φ350
φ310
155
10
M16(12)
8
φ250
φ295
φ254
φ305
φ400
φ364
182
12
M16
8
φ300
φ350
φ304
φ360
φ450
φ414
207
15
M16
12
φ350
φ400
φ354
φ410
φ500
φ464
232
15
M18
12
φ400
φ450
φ404
φ460
φ550
φ514
257
19
M18
12
φ450
φ500
φ454
φ510
φ600
φ564
282
-
M20
12