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| Parameters | Elbow between 24” short spool and 24”/20”reducer |
| Type of Service | Sour (Crude Oil) |
| Adjacent Component / Pipe Steel Grade | ISO3183 L450 PSL2 (NACE) / API 5L X65 |
| Design Code & Standard | ISO 15590-2, ASME B16.9 |
| Elbow Material Grade | ASTM A694 F65 (NACE)/ASTM A860 WPHY 65 (NACE) |
| Elbow Type | Long radius elbow (1.5 x OD) |
| Nos. of Elbow Required | Refer to Elbow MTO |
| Surface Protection | System 7A NORSOK M-501 (Permanent Paint System) |
| Matching Pipe Steel Grade | ISO 3183 Grade L450 PSL 2 /API 5L X65 |
| Pipe Outer Diameter | 610mm (NPS24) |
| Pipe Internal Diameter | 575.04mm |
| Pipeline Nominal Wall thickness | 17.48mm |
| Angle of Elbow | 15 deg |
| Pressure-Temperature Rating | (ASME B16.5/MSS SP-44) 300# |
| Design / Safety Factor for Spool / Pipeline | 0.6 |
| Minimum Yield Strength | 450 MPa |
| Minimum Tensile Strength | 520 MPa |
| Maximum Design Temperature | 60°C |
| Minimum Design Temperature | 0°C |
| Maximum Operating Temperature | 50°C |
| Maximum Allowable Operating Pressure / Design Pressure | 18 barg |
| Hydrotest Pressure | 27 barg |
| Pipeline Corrosion Allowance | 6mm |
| Material Certificate | EN 10204 3.1 |
| Hardness | 220 HV10(max) |
| Chemical composition | Subclause 9.3, ISO 15590-2 with CE < 0.40%, Class CS |
| Tensile – base metal | Class CS, Subclause 9.4.2.3, ISO 15590-2 |
| Transverse weld tensile | Class CS, Subclause 9.4.2.3, ISO 15590-2 |
| Impact – base material | Subclause 9.4.3.3, ISO 15590-2 |
| Impact – weld seam | Subclause 9.4.3.3, ISO 15590-2 |
| Through-thickness test | No hardness reading shall exceed 220 HV10 |
| Surface Hardness test | Subclause 9.4.5 ISO 15590-2 |
| Metallography | Subclause 9.4.6.2 ISO 15590-2 |
| HIC | Required. Subclause 9.4.7 ISO 15590-2 |
| Guided band (weld seam) | Subclause 9.4.10.3 ISO 15590-2 |
| NDT | Subclause 9.5.3 – Subclause 9.5.8 ISO 15590-2 |
| Dimension inspection | Subclause 9.6 ISO 15590-2 |
| Parameters | Reducer between 24”/20” Piping |
| Type of Service | Sour (Crude Oil) |
| Adjacent Component / Pipe Steel Grade | ISO3183 L450 PSL2 (NACE) / API 5L X65 |
| Design Code & Standard | ISO 15590-2, ASME B16.9 |
| Elbow Material Grade | ASTM A694 F65 (NACE)/ASTM A860 WPHY 65 (NACE) |
| Elbow Type | Long radius elbow (1.5 x OD) |
| Nos. of Elbow Required | Refer to Reducer MTO |
| Surface Protection | System 7A NORSOK M-501 (Permanent Paint System) |
| Matching Pipe Steel Grade | ISO 3183 Grade L450 PSL 2 /API 5L X65 |
| Pipe Outer Diameter | 610mm (NPS24) / 508mm (NPS20) |
| Pipe Internal Diameter | 575.04mm / 477.82mm |
| Pipeline Nominal Wall thickness | 17.48mm / 15.09mm |
| Pressure-Temperature Rating | 300# |
| Design / Safety Factor for Spool / Pipeline | 0.6 |
| Minimum Yield Strength | 450 MPa |
| Minimum Tensile Strength | 520 MPa |
| Maximum Design Temperature | 60°C |
| Minimum Design Temperature | 0°C |
| Maximum Operating Temperature | 50°C |
| Maximum Allowable Operating Pressure / Design Pressure | 18 barg |
| Hydrotest Pressure | 27 barg |
| Pipeline Corrosion Allowance | 6mm |
| Material Certificate | EN 10204 3.1 |
| Hardness | 220 HV10(max) |
| Chemical composition | Subclause 9.3, ISO 15590-2 with CE < 0.40%, Class CS |
| Tensile – base metal | Class CS, Subclause 9.4.2.3, ISO 15590-2 |
| Transverse weld tensile | Class CS, Subclause 9.4.2.3, ISO 15590-2 |
| Impact – base material | Subclause 9.4.3.3, ISO 15590-2 |
| Impact – weld seam | Subclause 9.4.3.3, ISO 15590-2 |
| Through-thickness test | No hardness reading shall exceed 220 HV10 |
| Surface Hardness test | Subclause 9.4.5 ISO 15590-2 |
| Metallography | Subclause 9.4.6.2 ISO 15590-2 |
| HIC | Required. Subclause 9.4.7 ISO 15590-2 |
| Guided band (weld seam) | Subclause 9.4.10.3 ISO 15590-2 |
| NDT | Subclause 9.5.3 – Subclause 9.5.8 ISO 15590-2 |
| Dimension inspection | Subclause 9.6 ISO 15590-2 |
Contact Person: Mr. Sam Cui
Tel: +86 130 3189 1590
