Marine Heavy Type Steel Porthole

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