Product Introduction:

SAWL straight seam double-sided submerged arc welded steel pipe products can be used as steel pipes for various purposes such as land and marine natural gas transportation, shale gas, petroleum, petrochemicals, urban gas, water, and slurry transportation. They are also widely used in engineering fields such as construction, bridges, offshore platforms, and power.

Diameter: Ø 406.4~Ø 1422mm.

Wall thickness: 6.3~50.8mm.

Steel grade:

⑴ Pipeline steel: L245/B~L690/X100;

⑵ Carbon steel: Q235~Q460, C60, C65, etc.

Execution standards: GB/T 9711-2017, API SPEC 5L (46th edition), GB/T 3091-2015, SY/T 5037-2018, ASTM A671, ASTM A672 and other domestic and international standards for similar products, as well as other higher standards.

Main product parameters (API SPEC 5L (46th edition)):

Outer diameter deviation:

When the outer diameter of the steel pipe is 406 ≤ D ≤ 610mm:

Deviation of inner and outer diameters within a range of 100mm at the pipe end: ± 0.005D, * * is ± 1.6mm;

Outer diameter deviation of the tube body: ± 0.0075D, * * is ± 3.2mm.

When the outer diameter of the steel pipe is 610 ＜ D ≤ 1422mm:

Deviation of inner and outer diameters within a range of 100mm at the pipe end: ± 1.6mm; deviation of outer diameter of the pipe body: ± 0.005D, * * is ± 4.0mm.

Ellipticity deviation:

When the outer diameter of the steel pipe is 406 ≤ D ≤ 610mm:

Ellipticity deviation within 100mm of the pipe end: 0.015D; Ellipticity deviation of the pipe body: 0.020D.

When the outer diameter of the steel pipe is 610 ＜ D ≤ 1422mm:

Ellipticity deviation within 100mm of the pipe end: 0.01D, * * 13mm;

Ellipticity deviation of the tube body: 0.015D, * * 15mm.

Wall thickness deviation:

When the wall thickness is t>5.0mm:

Wall thickness deviation: ± 0.1t, * * is ± 1.5mm.

Straightness deviation:

The total deviation of the entire length of the steel pipe from the straight line should be ≤ 0.2% of the length of the steel pipe, and the local deviation of the steel pipe from the straight line within a length range of 1.5m at each pipe end should be ≤ 3.2mm.

Length range:

Length: 8~12.5m.

If the customer has higher requirements for quality, it can be negotiated and determined.

Technical parameters: