Marine Bolt Type Aluminum Porthole
Introduction
Marine bolt type aluminum window is a common type of porthole, bolt type porthole is more convenient to install, suitable for aluminum and steel all kinds of ships. In addition, these windows are light in weight and beautiful in appearance.
Specifications of Marine Bolt Type Aluminum Porthole
clear size D
D1
D2
D3
D4
h
t
gmax
bolt
Cut out in steel wall
whorl
qty
φ200
φ245
φ250
φ350
φ310
155
8
50
M12
8
253
φ250
φ295
φ305
φ400
φ364
182
8
47.5
M16
8
308
φ300
φ350
φ360
φ450
φ414
207
10
45
M16
12
363
φ350
φ400
φ410
φ500
φ464
232
12
45
M18
12
413
φ400
φ450
φ460
φ550
φ514
257
12
45
M18
12
463
φ450
φ500
φ510
φ600
φ564
282
15
45
M20
12
513
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