SA350 LF2 CL1 WN Flanges and Blind Flanges Shipped to Indonesia
Low-temperature piping projects across Indonesia’s oil and gas sector often require mixed sets of standard and drawing-specified flanges to match varied pressure classes and pipe schedules. Haihao Group has completed production and shipment of SA350 LF2 CL1 WN flange assemblies for an Indonesian energy project, combining standard RF weld neck flanges, custom drawing-version WN flanges, long weld neck flanges and blind flanges all manufactured to ASME B16.5.
SA350 LF2 CL1 WN flanges, long weld neck flanges and blind flanges ASME B16.5 RF for Indonesia low-temperature oil and gas piping project
Product Specification Table
| Item | Parameter |
| Material | SA350 LF2 CL1 Low Temperature Carbon Steel |
| Standard | ASME B16.5 |
| Flange Types | Weld Neck(WN), Long Weld Neck, Blind Flange, RF Raised Face |
| Size Range | 2″ ~ 24″ |
| Pressure Class | 150#, 300# |
| Schedule | SCH60, SCH XS, SCH80, SCH120, SCH160 |
| Surface Finish | Painted |
| Specification | Standard ASME flanges & flanges per customer drawings |
This delivery covers a wide size range from 2 inch up to 24 inch, with pressure ratings of Class 150# and Class 300#. The SA350 LF2 CL1 WN flange portfolio includes multiple wall schedules: SCH60, SCH80, SCH120, SCH160 and SCH XS. Some flanges follow standard ASME dimensions, while others are fabricated strictly according to the client’s technical drawings to meet unique connection requirements on site. All flange faces are raised face (RF) and finished with paint coating for surface protection.
For installations exposed to low ambient or process temperatures, project designers frequently select the SA350 LF2 CL1 WN flange. This low-temperature carbon steel grade delivers reliable impact resistance, preventing brittle fracture under cold service conditions. The weld neck design offers good stress distribution at weld joints, making the SA350 LF2 CL1 WN flange suitable for high-pressure, critical process piping in refinery and gas facilities.
Our QC team carried out dimensional checks and material verification for every flange before packing. Both standard and custom drawing-based units are fully traceable with material test certificates. Whether you need only standard ASME B16.5 units or fully custom drawing-specified flanges, Haihao Group can supply SA350 LF2 CL1 WN flange packages with paint coating and full documentation for Southeast Asian projects.
Send over your flange specifications or construction drawings if you are sourcing low-temperature flanges for your next Indonesian or regional piping project. Our engineering team can review requirements and provide competitive quotations for weld neck, long weld neck and blind flanges.