API 5L X70 Pipe Specifications

The table below summarises key API 5L X70 pipe specification parameters per API 5L.

Parameter Details
Standard API 5L / ISO 3183
PSL Levels PSL1, PSL2
Outside Diameter 6" (168.3 mm) to 64" (1,625 mm)
Wall Thickness 6 mm to 50+ mm (varies by method)
Length 6 m, 12 m, or custom
End Type Plain end, bevelled end
Coating Bare, 3LPE, 3LPP, FBE
Manufacturing Method Seamless, ERW, LSAW, SSAW

API 5L X70 Pipe Sizes

Refer to the following technical data for the comprehensive dimensional availability and manufacturing ranges of API 5L X70 Line Pipes.

Parameter Specification / Range
Outside Diameter (OD) 6" to 64" (168.3 mm – 1,625 mm)
Seamless Wall Thickness 6 mm to 40 mm
Welded (LSAW/SSAW) Thickness 6 mm to 50 mm+
Standard Lengths 6 Meters and 12 Meters
Custom Options Precision Cut-to-Length available
Manufacturing Methods Seamless, ERW, LSAW, SSAW

API 5L X70 Pipe Price

Pricing depends on diameter, wall thickness, PSL level, manufacturing method, coating, quantity, and delivery terms (FOB, CIF, ex-works). Contact us for current rates.

API 5L X70 Chemical Composition

API 5L X70 (ISO 3183 L485) line pipe balances strength with weldability through controlled carbon, manganese, and micro-alloy elements.

Vanadium, niobium, and titanium act as grain refiners with a significant combined effect on toughness and yield strength.

Carbon C
Max 0.26%
Manganese Mn
Max 1.65%
Phosphorus P
Max 0.025%
Sulphur S
Max 0.015%
Vanadium V
Max 0.10%
Niobium Nb
Max 0.05%
Titanium Ti
Max 0.04%
CE (IIW) CE
Max 0.43%

API 5L X70 Mechanical Properties

Refer to the technical data below for mechanical performance criteria of API 5L X70 Line Pipes, which compares PSL1 and PSL2 requirements.

485
MPa
Yield Strength
625
MPa
Tensile Strength
17%
min
Elongation
Property PSL1 Specification PSL2 Specification
Yield Strength (min) 70,300 psi (485 MPa) 70,300 psi (485 MPa)
Yield Strength (max) Not Specified 90,600 psi (625 MPa)
Tensile Strength (min) 82 psi (565 MPa) 82 psi (565 MPa)
Tensile Strength (max) Not Specified 110,200 psi (760 MPa)
Elongation (min %) 17% (Grade Dependent) 17% (Grade Dependent)
Charpy Impact Test Optional / Not Required Mandatory (Toughness Verification)
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ASTM Equivalent for API 5L X70

API 5L doesn't have a direct ASTM equivalent. The closest international cross-references are listed below.

Standard Designation
ISO 3183 L485 / L485NB / L485MB / L485QB
EN 10208-2 L485MB
GB/T 9711 L485
CSA Z245.1 Grade 483

API 5L X70 Pipe Industrial Applications

X70 line pipe serves 3 sectors where its 70 ksi yield strength reduces wall thickness and project cost.

Oil & Gas Transmission Pipelinesmpa

Onshore gas and crude oil trunk lines above 1,000 psi specify X70 for thinner walls and lower material weight.

Offshore and Subsea Pipelines

Offshore risers and subsea flowlines require X70M PSL2 pipe qualified to DNVGL-ST-F101 SMYS 485 for deepwater pressure and low-temperature toughness.

Water & Slurry Transmission

Large-diameter SSAW X70 pipe carries municipal water and mining slurry at pressures standard grades cannot handle efficiently.

API 5L X70 vs X65: Grade Comparison

X70 offers 8% higher yield strength (70 ksi vs 65 ksi) than X65, enabling thinner walls at the same design pressure.

Property X70 X65
Min. Yield Strength 70 ksi (483 MPa) 65 ksi (448 MPa)
Min. Tensile Strength 82 ksi (565 MPa) 77 ksi (531 MPa)
Min. Elongation 17% 18%
Typical Use High-pressure trunk lines Moderate-pressure gathering lines

Shipping & Packaging

Main export packaging setup Heavy-duty wooden boxes Packing
Export Packaging Standard

We strictly follow seaworthy export handling standards to protect API 5L X70 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
shipping preparation Pipe Bundle Yard Staging
Shipping packaging Container End-Cap Protection
Shipping stock 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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Frequently Asked Questions

What is the yield strength of API 5L X70 Pipe? +
The SMYS is 70 ksi (483 MPa) with a minimum tensile strength of 82 ksi (565 MPa) and 17% minimum elongation.
What is the difference between API 5L X70 PSL1 and PSL2 Pipe? +
PSL2 requires maximum yield and tensile caps, mandatory Charpy impact testing, stricter chemistry limits, and tighter tolerances. PSL1 sets minimum mechanical values only.
What is the ASTM equivalent of API 5L X70? +
API 5L doesn't have a direct ASTM equivalent. The closest references are ISO 3183 L485, EN 10208-2 L485MB, and CSA Z245.1 Grade 483.
What is the wall thickness Range for API 5L X70 Pipe? +
Seamless X70 is available from 6 mm to 40 mm. LSAW and SSAW pipe ranges from 6 mm to over 50 mm.
What is the difference between X70 and X70M Pipe? +
The API 5L 46th edition specifies the TMCP rolled variation as X70M. The "M" indicates a delivery condition rather than a strength modification, which improves toughness for offshore and sour service.
What sizes are available for API 5L X70 Pipe? +
We supply diameters from 6" (168.3 mm) to 64" (1,625 mm). Seamless covers the smaller range; LSAW and SSAW handle large diameters.
Can API 5L X70 pipe be used for sour service? +
Yes, when specified as X70MS or X70QS and meeting NACE MR0175/ISO 15156 requirements. Sour service designation requires HIC and SSC resistance testing.
Where can I buy API 5L X70 Pipe? +
Sachiya Steel International supplies API 5L X70 pipe in all four forms with mill test certificates. Contact us for availability and pricing.

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