API 5L X65 steel pipe | API 5L X65 SSAW Steel Pipe | Large Diameter Spiral Welded Line Pipe
- Model
- API5LX65-01
Item specifics
- Certificate
- API, ISO9001
- Special Pipe
- API Pipe
- Pipe Ends
- plain, beve
- Standard
- API 5L
- Technique
- SSAW
- Secondary Or Not
- Non-secondary
- Product name
- API X65 Pipe(SSAW)
- Oiled or Non-oiled
- Non-oiled
- Length
- 18M,12M, 6m, 6m instock ( 1.5-30m customized)
- Section Shape
- Round
- Wall thickness
- 6--25.4 mm
- Outer Diameter
- 219 - 3620 mm
- Material
- Carbon Steel x65
- End protector
- None OR Plastic caps
Review
Description
As a leading SSAW pipe manufacturer, we supply API 5L X65 PSL1 & PSL2 spiral welded pipes in OD from 219mm to 3500mm for oil & gas transmission projects worldwide.
4 Bullet Points:
-> Focus on SSAW: Single production line, industry-leading process maturity
-> Large caliber advantage: outer diameter can reach 3500mm, wall thickness can reach 25.4mm
-> PSL2+NACE MR0175 acid working condition optional
-> The factory has CNAS inspection centers: SGS/BV/TUV/DNV
X65 SSAW Pipe — High Strength Meets Large Diameter Economics
API 5L X65 is a high-strength line pipe grade with a minimum yield strength of 65,000 psi (450 MPa). This grade is widely specified for long-distance oil and gas transmission pipelines where higher operating pressures and thinner wall thicknesses are required to optimize project economics.
When it comes to manufacturing X65 in large diameters, SSAW (Spiral Submerged Arc Welded) is recognized as one of the most cost-effective and industrially mature processes available. Unlike LSAW or UOE pipes, which rely on heavy plate mills, SSAW pipes are formed from hot-rolled steel coils — a raw material strategy that delivers a higher material utilization rate, better cost control, and unmatched flexibility in length and diameter combinations. For pipeline projects requiring OD ranges from 24 inches up to 138 inches, SSAW remains the preferred solution for both onshore and offshore transmission lines.
As a manufacturer dedicated exclusively to SSAW production, we do not dilute our process capability across multiple product lines. Every welding head, every forming stand, and every quality checkpoint in our mill is calibrated for spiral welding alone. This single-process focus results in:
Exceptional weld consistency — with less process variation than multi-product mills or trading companies;
Stable mechanical properties — particularly critical for high-strength grades like X65 PSL2, where Charpy impact and tensile values must stay within narrow windows;
Reliable lead times — our coil inventory and production scheduling are optimized for SSAW volumes, not split across seamless or LSAW orders.
In short, when you source API 5L X65 SSAW pipe from a focused manufacturer, you are not buying from a catalog — you are buying from a mill where this product is the core competence, not a side business.
API 5L X65 SSAW Pipe Specifications
| Parameter | Scope |
| Standard | API 5L 46th Edition / ISO 3183 |
| Steel Grade | X65 (L450) |
| PSL level | PSL1 / PSL2 |
Outer Diameter | 219mm – 3500mm (8" – 138") |
Wall Thickness | 6mm – 25.4mm |
Length | 6m/12m/18m/or customized(Up to 30 meters in length) |
End | Flat end/groove/pipe cap |
Surface | Bare Pipe/clear varnish/3LPE/FBE/internal epoxy |
API 5L X65 SSAW Pipe Chemical Composition
| Element | C | Mn | P | S | Si | V | Nb | Ti | CE |
| % | ≤0.22 | ≤1.45 | ≤0.025 | ≤0.015 | ≤0.40 | ≤0.05 | ≤0.05 | ≤0.04 | ≤0.43 |
Mechanical Properties
| Performance | X65 PSL1 | X65 PSL2 |
| Yield Strength | ≥450 MPa | 450–600 MPa |
| Tensile Strength | ≥535 MPa | 535–760 MPa |
| Elongation | ≥18% | ≥18% |
Impact Test | Not mandatory | Need to do, temperature according to project requirements |
Non-Destructive Testing | Water pressure+visual inspection | Water pressure+UT/RT |
Types of API 5L X65 SSAW Pipe We Supply
| Type | Explanation | Applicable scenarios |
| API 5L X65 PSL1 SSAW | Conventional conveying conditions | Ordinary oil and gas pipelines, water pipelines |
| API 5L X65 PSL2 SSAW | Strict chemical composition, impact, non-destructive testing | Long distance pipelines and high-pressure main lines |
| API 5L X65M SSAW | Hot rolled coil welding, grade with M | Standard welded pipeline pipe |
X65 Sour Service (NACE MR0175) | HIC/SSC testing | Acidic oil and gas fields containing H ₂ S |
X65 Offshore / Subsea SSAW | High toughness, low temperature impact | Subsea pipelines and risers |
Applications of API 5L X65 SSAW Line Pipe
Onshore Oil & Gas Transmission
X65 SSAW is an economical choice for long-distance pipelines, especially suitable for 24 "-80" trunk lines.
Offshore & Subsea Pipelines
Spiral welded pipes are used for underwater laying by strict control of ovality and weld clearance, combined with 3LPE/3LPP coating.
Sour Service Fields
Supply according to NACE MR0175/ISO 15156 and pass the HIC/SSC test.
Water & Slurry Transmission
X65 is used for high flow water and slurry pipelines.
Why Choose [Wuzhou Brand] for X65 SSAW Pipe?
| Advantage | Explanation |
| Only do SSAW | Focusing on a single process, with an annual production capacity of 40 million tons |
| Large caliber capability | Maximum outer diameter 3500mm, wall thickness up to 25.4mm |
| Mature supply of high-grade steel | X65/X70/X80 Long term export record |
Complete documentation | EN 10204 3.1/3.2 MTC, COC, NACE certificates |
logistics support | Supports FOB/CFR/CIF, can be shipped to major ports worldwide |
API 5L X65 SSAW Pipe FAQs
Q1: Can X65 be made as SSAW pipe?
A: Yes. SSAW is one of the most common processes for large diameter X65 line pipe, especially above 24".
Q2: What is the difference between X65 PSL1 and PSL2?
A: PSL2 requires tighter chemistry, Charpy impact testing, and higher NDT coverage. It is mandatory for most modern pipeline projects.
Q3: Can you supply X65 SSAW for sour service?
A: Yes, we supply X65 PSL2 with NACE MR0175 compliance, including HIC and SSC testing reports.
Q4: What is the maximum diameter you can produce?
A: Up to 3500mm OD, wall thickness up to 25.4mm, length up to 12m standard.
Q5: Do you provide third-party inspection?
A: Yes. SGS, BV, TUV, DNV, and client-specified inspectors are all welcome.Our own factory has CNAS laboratory, so there is no need to wait for third-party inspection.
