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api 5l x65 pipe

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Categories	API 5L Spiral Welded Line Pipe – SSAW for Oil & Gas Transmission
Brand	Cangzhou Spiral Steel Pipe Manufacturers
Model	api 5l x65 pipe-01
TRADE TERM	FOB CFR CIF
Name	API 5L SSAW Line Pipe
Standard	API 5L
Technique	SSAW
Certificate	API, CE, JIS, ISO9001
Product name	Spiral Steel Hollow Section
Oiled or Non-oiled	Non-oiled
Processing Service	Welding, Punching, Cutting, Bending, Decoiling
Length	12M, 6m, 6.4M to 30m or custom
Tolerance	±5%, ±1%, ±10% or custom
Ends	1.Plain End2. Beveled3.Threaded.4 Screwed
Material	API 5L X65 or L450
Surface Treatment	galvanized 3pe 3ple,etc.
FOB port	Tianjin port
Terms of Payment	L/C, T/T
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Detail Information

API 5L X65 Spiral Welded Pipe (SSAW) - High Strength Steel Pipe for Long distance Pipeline

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Cangzhou Spiral Steel Pipe Manufacturing Group | 13 production lines | Annual output of 400000 tons | CNAS certified laboratory

Why does global engineering procurement choose our API 5L X65 spiral welded pipe

When your project needs to be delivered on time within budget while meeting the strictest PSL2 standard of API 5L, choosing the wrong supplier can result in project delays, on-site rework, and even pipeline integrity risks.

Cangzhou Spiral Steel Pipe Manufacturing Group has 13 spiral welded pipe production lines with an annual production capacity of 400000 tons. With the in-house testing capabilities of CNAS certified laboratories, you can have complete visibility into the chemical composition, mechanical properties, and weld quality of each meter of steel pipe from the moment you place an order.

You no longer need to wait for third-party laboratories to schedule and obtain pre inspection data. You no longer worry about the ambiguity of responsibility caused by the separation of coating and pipe manufacturing companies. You no longer need to coordinate delivery schedules among multiple suppliers.

A steel pipe, a quality system, and a traceable inspection report.

What Is API 5L X65 Spiral Welded Pipe？

API 5L X65 is a high-strength steel grade widely used for long-distance oil and gas transportation in the American Petroleum Institute (API) pipeline pipe standard. X65 represents the minimum yield strength of 65000 psi (approximately 448 MPa), corresponding to L450 in the metric system of API 5L. The yield strength of grade X is expressed in kilopounds per square inch (ksi), with higher values indicating higher steel strength.

Spiral Submerged Arc Welded (SSAW) pipe adopts narrow coil spiral forming and double-sided submerged arc welding process. Compared to seamless and straight seam welded pipes, spiral welded pipes have significant cost and efficiency advantages in the production of large-diameter (over 20 inches) pipelines: continuous coil feeding achieves higher dimensional consistency, spiral welds disperse circumferential stress, and improve the structural performance of pipelines under internal and external loads.

For projects that require PSL2 level, X65 pipelines must also meet stricter chemical composition limits, mandatory impact testing, and non-destructive testing requirements for each pipe.

Specifications

You can confirm the following parameter range before placing an order, and we support customization to meet specific project requirements.

Parameter	Scope
Workmanship	Spiral submerged arc welding (SSAW)
Outer diameter (OD)	219 mm – 3048 mm
Wall thickness (WT)	6.0 mm – 25.4 mm
Length	6 m -18 m (customizable up to 50 m)
Steel Grade	X65 / L450
Specification Level	PSL1，PSL2
Pipe End	Flat end, beveled end, threaded end
Reference Standard	API 5L，ISO 3183

Chemical Composition And Mechanical Properties

The following is a comparison of the chemical composition and core mechanical performance indicators of API 5L X65 PSL1 and PSL2. These data are the parameters that you must verify when conducting project specification validation.

Chemical Composition (Maximum Value,%)

Element	PSL1 X65	PSL2 X65
C	0.28	0.24
Mn	1.40	1.40
P	0.030	0.025
S	0.030	0.015

PSL2 has stricter requirements for carbon, phosphorus, and sulfur content. The carbon content was reduced from 0.28% to 0.24%, and the sulfur content was halved to 0.015%, significantly improving welding performance and low-temperature toughness.

Mechanical Properties

Performance	Numerical Value
Minimum Yield Strength	448 MPa (65 ksi)
Minimum Tensile Strength	531 MPa (77 ksi)
Yield Strength To Tensile Strength Ratio(Maximum)	0.93

The yield strength of X65 at 448 MPa means that the pipeline can withstand higher internal pressures and is suitable for high-pressure long-distance pipelines. The upper limit of flexural strength ratio is 0.93, ensuring that the material still has sufficient plastic deformation ability after yielding.

Additional Requirements for PSL2

By selecting PSL2 level, you will receive:

Forced impact test: Longitudinal Akv ≥ 41J, transverse Akv ≥ 27J at 0 ° C

Non destructive testing of each steel pipe: Each steel pipe must undergo NDT

Water pressure testing one by one: API standards do not allow non-destructive testing to replace water pressure testing

Carbon Equivalent Quantity (CEQ) Limit: Improving Weldability

Our Manufacturing Advantages

Cangzhou Spiral Steel Pipe Manufacturing Group does not provide standard products for your X65 project, but rather procurement certainty.

13 production lines with an annual production capacity of 400000 tons

The delivery rhythm of large-diameter spiral welded pipes depends on the number of production lines. 13 production lines mean that we can schedule production in parallel across multiple lines, shortening the delivery cycle for large caliber orders, rather than having your project wait for the scheduling window of a single production line.

CNAS accredited laboratory

Chemical composition analysis, tensile testing, impact testing, and coating adhesion testing are all completed in the factory. You no longer need to wait for the scheduling of third-party laboratories to obtain pre inspection data. The EN 10204 3.1 certificate is submitted with each batch of goods, and the data can be traced back to the heat number.

Integration Of Pipe Manufacturing And Coating

Pipe production and coating are completed under the same quality system. This means:

Anchor depth and coating adhesion are executed under controlled conditions

Coating parameters and steel pipe production records are in the same traceability chain

Eliminate the ambiguity of responsibility when steel pipes and coatings belong to different suppliers

Application

API 5L X65 spiral welded pipe is suitable for:

Long distance oil and gas pipelines: high-pressure natural gas and crude oil transmission backbone lines

Urban gas pipeline network: high-pressure distribution pipeline

Water transportation: large-diameter water transmission trunk line

Sour Service: Operating conditions that comply with NACE MR0175 requirements

Pile driving and structural support: offshore platforms, dock pile foundations

The Project Scenario You Are In

If you are procuring X65 pipelines for oil and gas projects in Southeast Asia, the Middle East, or South America, you may face the following challenges:

The project specification requires PSL2 level, but the supplier can only provide PSL1 or cannot provide complete PSL2 testing data

Large diameter (over 24 inches) pipelines are required, but the coverage range of mainstream suppliers' production lines is limited

Third party inspection (SGS/BV/TUV) requires on-site witness testing, but the supplier's laboratory capabilities are insufficient, resulting in an extended inspection cycle

The coating and pipe manufacturing are completed by different suppliers, and it is difficult to define the responsibility for coating damage on site

The original intention of Cangzhou Spiral Steel Pipe Manufacturing Group's design is to eliminate these pain points.

FAQ

Q1: What is the difference between API 5L X65 PSL1 and PSL2? Which one should I choose?

PSL2 has stricter requirements and is suitable for high-risk or harsh working conditions.

Main differences: The upper limit of carbon content for PSL2 is 0.24% (0.28% for PSL1), the upper limit of sulfur content is 0.015% (0.030% for PSL1), and there are mandatory impact tests and non-destructive testing for each component, with carbon equivalent limitations.

If your project involves high-pressure, low-temperature, or acidic services, choose PSL2. If it is a general fluid transport and cost sensitive, PSL1 can meet the requirements.

Q2: What are the yield strength and tensile strength of X65?

The minimum yield strength is 448 MPa (65 ksi), and the minimum tensile strength is 531 MPa (77 ksi). The upper limit of flexural strength ratio is 0.93, ensuring that the material has sufficient plastic deformation ability. X65 corresponds to L450 in the API 5L metric system.

Q3: What diameter X65 spiral welded pipe can you produce?

The outer diameter range is 219 mm to 3048 mm. 13 production lines cover the full caliber range, and large-diameter orders can be scheduled in parallel. If you need large-diameter pipes over 20 inches, spiral welded pipe (SSAW) is a more cost-effective choice than seamless pipe.

Q4: What additional tests are required for PSL2 level?

PSL2 requirements: Non destructive testing (UT or X-ray) for each pipe, water pressure testing for each pipe (API standards do not allow NDT to replace water pressure testing), impact testing (Akv ≥ 41J in the longitudinal direction and ≥ 27J in the transverse direction at 0 ° C). Our CNAS laboratory can complete all testing in the factory, and the data will be submitted with the EN 10204 3.1 certificate.

Q5: What coating options do you offer?

3LPE (three-layer polyethylene) is suitable for buried pipelines and complies with DIN 30670 or ISO 21809-1. FBE (Fusion Bonded Epoxy Powder) is suitable for rock backfilling or directional drilling through sections. The pipe making and coating are completed in the same factory, and the anchor depth and adhesion are verified in CNAS laboratory.

Q6: What is your delivery cycle?

Bare pipes usually take 30-45 days, while 3LPE coated pipes take 45-60 days, depending on the coating type and current production schedule. 13 production lines provide parallel scheduling space, and the delivery predictability of large caliber orders is better than that of single production line factories.

Q7: Do you allow third-party inspection?

Allow it. SGS, BV, TUV and other inspection agencies may visit relevant production areas with prior notice. We provide the necessary facilities and cooperation for witnessing water pressure testing and coating inspection. The pre inspection data from CNAS laboratory can shorten the waiting time for third-party witness testing.

Q8: What kind of certificates do you provide?

EN 10204 3.1 Rolling certificate shall be submitted with each batch of goods, including chemical composition, tensile properties, elongation, and hydrostatic pressure test results. PSL2 orders provide additional impact test data. All data can be traced back to the hot number.

Q9: Is X65 suitable for Sour Service?

Sure, but special requirements are needed. X65 can be used for acidic services, but it must comply with NACE MR0175/ISO 15156 requirements and be clearly specified in the order. Acidic services have additional restrictions on chemical composition and hardness, and our laboratory can perform relevant tests.

Q10: Can you provide samples or trial orders?

Okay. Short section samples can be used for evaluation, but the coating and lining need to match the project specifications to be representative. The sample cost and shipping fee shall be borne by the buyer. For the first cooperation, we can provide trial order services.