The marine double-wall pipe system features a pipe-within-a-pipe configuration, where the inner carrier pipe is enclosed within an outer jacket pipe, creating an annular space between the two layers. This interstitial space serves as a containment barrier, effectively isolating any potential leakage from the inner pipe and significantly enhancing system safety.

The inner pipe functions as the primary pressure carrier for natural gas distribution in LNG dual-fuel powered vessels. Depending on specific operational requirements, various inner/outer pipe configurations and support types are available. The system is characterized by easy maintenance, operational reliability, and proven safety performance, with extensive successful applications across multiple marine projects.