API 5L X42 Pipe Specifications
Refer to the following technical data for the material specifications and performance requirements of API 5L X42 Line Pipes.
| Attribute | PSL1 Specification | PSL2 Specification |
|---|---|---|
| Material / Grade | API 5L X42 (L290) | API 5L X42 (L290) |
| Yield Strength (min) | 42,000 psi (290 MPa) | 42,000 psi (290 MPa) |
| Yield Strength (max) | Not Specified | 71,800 psi (495 MPa) |
| Tensile Strength (min) | 60,200 psi (415 MPa) | 60,200 psi (415 MPa) |
| Tensile Strength (max) | Not Specified | 110,200 psi (760 MPa) |
| Carbon Content (max) | 0.28% | 0.22% |
| Phosphorus (max) | 0.03% | 0.03% |
| Sulfur (max) | 0.03% | 0.02% |
| Impact Testing | Not Required | Mandatory Charpy V-Notch |
| Size Range (Typical) | 1/2" to 80" | 1/2" to 80" |
| WNR / Material No. (closest) | 1.0483 | 1.0484 |
API 5L X42 Pipe Sizes & Dimensions
The table below shows the typical outside diameter ranges available by pipe manufacturing type.
| Manufacturing Method | OD Range |
|---|---|
| Seamless (SMLS) | 1/2" to 24" NPS |
| ERW / HFW | 2" to 24" NPS |
| LSAW / DSAW | 16" to 80" OD |
| SSAW | 16" to 120" OD |
Wall Thickness Specifications (ASME B36.10M)
This table presents the API 5L X42 pipe wall thickness, ensuring structural integrity, durability, and reliable pressure resistance across various nominal pipe sizes.
| Nominal Pipe Size (NPS) | Schedule (SCH) | Wall Thickness (mm) | Wall Thickness (in) |
|---|---|---|---|
| 6" | SCH 40 (STD) | 7.11 | 0.280 |
| 12" | SCH 40 | 10.31 | 0.406 |
| 18" | SCH 20 | 7.92 | 0.312 |
Weight and Mass per Unit Length
Please refer to the tables that follow for information regarding the weight and bulk of these particular products.
| Nominal Pipe Size (NPS) | Schedule (SCH) | Weight (kg/m) | Weight (lb/ft) |
|---|---|---|---|
| 6" | SCH 40 (STD) | 28.26 | 18.99 |
| 12" | SCH 40 | 79.71 | 53.52 |
| 18" | SCH 20 | 87.71 | 58.94 |
API 5L X42 Pipe Price
Pricing for API 5L X42 pipe in India averages ₹65–₹110/kg, while USA rates are $0.90–$1.80/kg. Pricing depends on manufacturing method, OD, wall thickness, quantity, and PSL level.
Chemical Composition of API 5L X42 Pipe
The table below lists the maximum allowable chemical composition limits for API 5L X42 pipe under PSL1 requirements.
PSL2 adds mandatory carbon equivalent limits (CE and Pcm) beyond the maximums below, with residual elements (Cu, Ni, Cr, Mo) also restricted for weldability.
Mechanical Properties of API 5L X42 Pipe
See the table below for the minimum mechanical requirements needed for pressurized pipeline service per API 5L.
PSL2 sets maximum yield and tensile caps to prevent excessive hardness. CVN impact testing at design temperature confirms toughness, and NDT applies to every welded length.
| Property | Value |
|---|---|
| Min. Yield Strength | 290 (42) MPa (ksi) |
| Min. Tensile Strength | 414 (60) MPa (ksi) |
| Min. Elongation | 23% |
Equivalent Designations and International Standards
The table below maps API 5L X42 to its equivalent designations under regional and international standards.
| Standard | Designation |
|---|---|
| UNS | K03006 |
| ISO 3183 | L290 |
| GB/T 9711 | L290 |
| CSA Z245.1 | Grade 290 |
| DNV-OS-F101 | SMLS 290 |
API 5L X42 Pipe Industrial Applications
API 5L X42 line pipe ensures safe, high-pressure fluid transmission across critical energy and industrial infrastructure networks.
Oil and Gas Transmission Pipelines
X42 is a standard choice for onshore crude oil and natural gas gathering lines, flow lines, and medium-pressure trunk lines.
Water and Fluid Transportation
Municipal water supply networks and industrial cooling circuits use API 5L X42 pipe for its pressure capacity and long service life.
Structural and General Industrial Use
Structural piling and process plant piping are secondary applications where X42's strength-to-cost ratio offers value.
API 5L X42 vs ASTM A106
The following table compares the key differences between API 5L X42 and ASTM A106.
While both grades share similar tensile properties, superior yield strength for high-pressure pipelines makes API 5L X42 stand out. Conversely, for high-temperature service applications in industrial process piping facilities, ASTM A106 Grade B remains the most frequently preferred material choice globally today.
| Attribute | API 5L X42 (PSL1) | ASTM A106 Grade B |
|---|---|---|
| Primary Scope | Pipeline Transportation Systems | High-Temperature Process Piping |
| Manufacturing | Seamless, ERW, LSAW, SSAW | Seamless Only |
| Min. Yield Strength | 290 MPa (42,000 psi) | 240 MPa (35,000 psi) |
| Min. Tensile Strength | 414 MPa (60,000 psi) | 414 MPa (60,000 psi) |
| Max. Carbon (Seamless) | 0.26% | 0.30% |
| Manganese Content | 1.30% (Maximum) | 0.29% – 1.06% |
| Testing Focus | Hydrostatic & Fracture Toughness | High-Temperature Pressure Integrity |
Shipping & Packaging
Heavy-duty wooden boxes Packing
We strictly follow seaworthy export handling standards to protect API 5L X42 pipe from transit damage, moisture ingress, and surface contamination during long-distance dispatch.
- Heavy-duty wooden boxes with moisture barrier lining
- HDPE stretch film wrapping on all bundles
- Plastic end caps on threaded and plain-end pipes
- Silica gel desiccants to minimize moisture exposure
- ISPM-15 fumigated wooden packaging for export
Pipe Bundle Yard Staging
Container End-Cap Protection
Wrapped Export-Ready Bundles
We Export Worldwide
Sachiya Steel International supplies carbon steel products to major industrial markets across North America, Europe, the Middle East, Asia and Africa with export-ready documentation and logistics support.
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