DONGNAMKOREA

DongNamKorea

Product

Encapsulated Straight Tube

XLPE-Sheathed Tube: Cross Sectional layer as 1 Core Tube with outer sheath by XLPE material. XLPE sheath is recommended for product oil (Cargo oil, Diesel oil, Gasoline, Jet Fuel oil, Naphtha, etc.) carriers where PVC sheath is not applicable. Shipyards conventionally installed bare tube without sheath in product oil tanks so the tube was bare exposed to corrosion.In order to prevent the possible tube corrosion in the tanks XLPE sheathed single core tube (non-adhesive) is highly recommended for product oil carriers. XLPE material properties are not available with adhesive.

Bond Type Tube: The bond type tube is installed in water ballast tank (WBT) and crude oil tank (COT). This tube has a special adhesive layer. between tube and protective outer sheath, capable of localizing any physical damage of the tube. When compared to conventional use of bare tube (typically 2mm wall) the bond type tube of 0.8-1.0mm wall is commonly adopted, which enables yard's installation easier and minimizes corrosion of tube in service.

Typical Installation

Properties of Sheath

Item	PVC	TCR PVC	FR PVC	HFFR TPU	HFFR PE	XLPE
Tensile Strength (kgf/mm²)	1.2- 1.4	2.0- 2.4	1.3- 1.6	2.3- 2.8	1.0- 1.3	2.0- 2.3
Service Tempertaure (°C)	-40/ +70	-50/ +100	-40/ +70	-50/ +90	-45/ +70	-50/ +90
Elongation (%)	250-290	340-380	250-290	400-600	500-700	420-380
Hardness (Shore A or D)	84-90 (A)	81-85 (A)	86-90 (A)	87-380 (A)	93-95 (A)	90-95 (D)
Halogenated	O	O	O	X	X	X
Flame Retardant (IEC60332-1)	O	O	O	O	O	O
Flame Retardant (IEC60332-3-22 Category A)	X	O	O	O	O	O