GLL marine stainless steel elbows are made of 316L austenitic stainless steel, which is specially designed for high salt spray and high humidity environments in the ocean. Its material advantages are reflected in:
More stronger corrosion resistance: GLL 316L stainless steel contains molybdenum (Mo) components, and its chloride ion tolerance far exceeds that of 304 stainless steel. It is resistant to moisture, chemicals and corrosion (CASS test for more than 1000 hours without rust).
Mechanical stability: Maintain uniform toughness in the temperature range of -196℃ to 800℃, adapt to extreme temperature difference conditions, and avoid low-temperature brittle cracking or high-temperature deformation.
Sanitary compatibility: Surface roughness Ra≤0.4μm (dehydration polishing treatment), in line with ASTM A270 sanitary standards, suitable for seawater desalination, ship wastewater systems and other scenarios.
GLL marine stainless steel elbows are made by intelligent forging + CNC precision machining technology to achieve:
Zero defect forming: using closed die forging process, the material streamline is complete, the grain is refined to ASTM 8, and the fatigue strength is increased by 40%.
Modular design: providing multiple connection methods such as butt welding (BW), socket welding (SW), and thread (NPT/BSP), supporting ASME B16.9/B16.11 standard customization, shortening the on-site installation time.
Fluid mechanics optimization: The curvature radius of the elbow is precisely controlled (R=1D~5D), the internal smooth transition reduces turbulence, and the pressure loss is reduced by 35% compared with traditional cast elbows.
Our GLL each elbow is processed by advanced CNC machine tools and undergoes multiple non-destructive testing processes to ensure uniform wall thickness, precise angles, and smooth connections. Whether it is a 45-degree, 90-degree or custom-angle elbow, we can provide high-quality products that meet ANSI, DIN, JIS or ISO standards to ensure efficient operation of your fluid system.
GLL marine stainless steel elbows have been widely used in:
Marine engineering: FPSO single point mooring system, submarine oil pipeline.
Ship system: main engine cooling water circulation, ballast water treatment, fire protection pipeline.
Coastal facilities: seawater desalination plant, port machinery hydraulic pipeline, chemical plant corrosion resistant process.
