Double Wall Piping System

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A global leader in the design, manufacturing, and supply of LNG/NG piping and tubing systems.

Double Wall Piping System

Double wall pipes are primarily designed to safely transport or store hazardous liquids and gases. Double wall pipes consist of an inner pipe and an outer pipe. This dual structure plays a critical role in reducing the risk of leaks and preventing environmental contamination.

LNG Fuel Gas Supply Piping System

Double Wall Piping System is to supply the fuel gas to main engine with purpose of protection of explosion and leak-check mainly.
Double wall pipe has excellent performance against high pressure and extreme temperatures.

	Low Pressure & Cryogenic Temperature	High Pressure
Size	Inner Pipe DN15~300 in general Outer Pipe DN50~450 in general	Inner Pipe DN25~50 in general Outer Pipe DN100~150 in general
Fluid	Natural Gas & Liquified Gas	Natural Gas (Vaporized)
Design Pressure	10~16Bar(g)	300~420Bar(g)
Design Temperature	-269 ℃~60 ℃ in general range	-90 ℃~60 ℃ in general range
Material	Inner Pipe: Stainless Steel 316L Outer Pipe: Stainless Steel 316L	Inner Pipe: Super Duplex or Duplex Outer Pipe: Duplex or Stainless Steel 316L

Flange for Double Wall Pipe – Double Lip Flange

Low Pressure & High Pressure
Vent.holes are calculated in accordance with the air volume.

High Pressure

Design Pressure	300~420Bar(g)
Design Temperature	-90℃ ~ 60℃ in general
Material	Super Duplex , Duplex, & Stainless Steel 316L

low Pressure

Design Pressure	10~16Bar(g) in general
Design Temperature	-20℃ ~ 60℃ in general
Material	Stainless Steel 316L

Vacuum Insulated Piping System

Vacuum Insulated Pipes are double-walled vacuum insulated piping systems specifically designed to safely and efficiently transport cryogenic fluids, such as LNG, liquid oxygen, and liquid nitrogen. These pipes maximize insulation performance to minimize exposure of the fluid to external heat, protecting it from vaporization due to heat transfer.

Size	1/2” ~ 40”
Design Pressure	~ 30Bar(g)
Vacuum	~5*10^-6torr
Connection Type	Clamp & Flange Type(Bayonet Type), Welding Type
Fluid	LN2, LNG, LPG, LEG, LHe, LH2, LO2, LAr, & Others
Design Temperature	-269 ℃ ~