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Basic Information

EN10217 LSAW PIPE
Description: longitudinal submerged arc welded steel pipe
Standard: EN10217
Grade: P195GH, P235GH, P265GH

Size: 420--1420MM

Wall Thickness: 10--50MM

Wall Thickness Tolerance：±5%

Length: Normally 6M/12M, also depends on the requirements

Advantages: large diameter steel pipes, thick walls, high-pressure resistance: low-temperature resistance.

Application: For long distance transportation pipelines for oil, gas, water, offshore projects, on land engineering and construction.

Chemical Compositoin

Chemical composition(cast analysis)%
Steel Grade	C	Si max.	Mn	P max.	S max.
P195GH	≤0.13	0.35	≤0.70	0.025	0.020
P235GH	≤0.16	0.35	≤1.20	0.025	0.020
P265GH	≤0.20	0.40	≤1.40	0.025	0.020

Physical Properties

Mechanical properties for wall thickness T≤16
Steel Grade	Tensile properties at room temperature
	Upper yield strength MPa	Tensile strength Mpa	Elongation %
			longitudinal	transverse
P195GH	195	320-440	27	25
P235GH	235	360-500	25	23
P265GH	265	410-570	23	21

Detailed information

EN10217 LSAW steel pipe characteristics:

1. Large diameter and thick wall:

- EN10217 LSAW steel pipe is capable of producing large diameter and thick wall steel pipes, suitable for long distance pipes requiring high strength and large size.

2. High pressure and low temperature resistance:

-These steel pipes have good resistance to high pressure and low temperature, making them suitable for a variety of environmental conditions.

3. Dimensional accuracy and uniformity:

-LSAW steel pipe has high dimensional accuracy, uniform wall thickness and good surface quality, which helps to improve the overall performance and reliability of the pipe.

4. Welding quality:

- Adopt the pre-welding and finish welding process, the welding process is stable, the weld quality is high, and it is easy to realize the non-destructive testing in the production process and the on-site non-destructive testing review in the use process.

5. Production flexibility:

- Wide range of product specifications, can produce small diameter, large wall thickness of steel pipe, but also can produce large diameter, large wall thickness of steel pipe.

The advantages of EN10217 LSAW steel pipe：

1. Excellent ductility and toughness:

-LSAW steel pipes have good ductility and toughness, which allows them to show good performance in a variety of applications.

2. Uniform material characteristics:

- Due to the overall mechanical tube expansion treatment, the internal stress is small and evenly distributed, which can effectively prevent stress corrosion cracking.

3. Convenient for on-site welding construction:

- The dimensional accuracy of the steel pipe is high, which is convenient for on-site welding construction, and improves construction efficiency and safety.

4. High standard of quality control:

- From raw materials to finished products, the entire production process is subject to strict quality control, including 100% ultrasonic flaw detection, automatic online UT testing, X-ray testing, etc., to ensure that product quality meets high standards.

5. Widely used:

- Widely used in oil, gas, water treatment, thermal industry, bridge construction and other fields, especially in high-strength long-distance pipelines requiring large diameter and thick wall pipes.

How to ensure the quality of EN10217 LSAW steel tubes during transportation and storage?

1. Storage conditions:

- The steel pipe shall not be directly stacked on the ground, steel plate or cement floor, and the distance between the first layer of steel pipe and the ground shall not be less than 0.20m to avoid moisture, dust and pollution.

- Both ends of the steel pipe must be bound with plastic paper or packaging bags to prevent dust from entering.

- The rack or stack shall be neatly arranged and clearly marked and numbered, and the steel pipe shall be placed on the designated rack or stack according to the furnace number (batch number), variety, specification and material.

2. Stacking requirements:

- In order to prevent bending of the steel pipe or damage to the pipe surface, the steel pipe (or pipe bundles) should be placed on the sleepers at appropriate intervals and at the same level, ensuring that one end of the steel pipe is aligned.

- For annealed copper pipes, aluminum pipes and similar hoses, isolation sleepers should be placed between each layer, at least two places per layer, the sleepers should be placed perpendicular to the steel pipe, and face up and down to ensure a straight and aligned.

3. Open storage protection:

- Cold-rolled, cold-drawn or bright-annealed steel pipes are not allowed to be stored in the open air. If limited by inventory conditions, appropriate protective measures should be taken when open storage is required to avoid corrosion of media such as rain, snow, fog and a large amount of dust pollution of the steel pipe.

4. Transportation requirements:

- The compartment should be clean and free of stones, bricks and other hard objects to prevent it from hurting the steel pipe.

- For bulk or bundled steel pipes, the bottom of the carriage should be padded with sleepers. For vehicles using steel structure brackets on flat trucks, protective rubber pads must be installed on the full length of the sides in contact with the steel pipes.

- When the steel pipe (or pipe bundle) is transferred to the warehouse in the factory area, the steel pipe (or pipe bundle) should be properly placed isolation sleepers, at least two places along the length direction of the steel pipe, the cushion wood should be placed perpendicular to the steel pipe, and the top and bottom are aligned.

- For the finished steel pipe delivered to the user for long distance transportation, it should be tied up firmly after loading, if the steel wire rope or similar hard objects are tied up, the steel pipe should be padded with protective isolators or installed on the steel wire rope to prevent damage to the surface of the steel pipe, to avoid direct collision between the steel pipe and the carriage, friction and forward and forward movement.

EN 10217 LSAW PIPE

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