Large diameter straight seam double-sided submerged arc welding butt joint steel pipe (RBE method)

Product main parameters (API SPEC 5L (46 version)):

Outer diameter deviation:

When the outer diameter of the steel pipe is 914≤D≤1422mm:

The outer diameter deviation within 100mm of the pipe end: ±1.6mm; the outer diameter deviation of the pipe body: ±0.005D, the maximum is ±4.0mm.

When the outer diameter of the steel pipe is D>1422mm, it is agreed.

Ovality deviation:

When the outer diameter of the steel pipe is 914≤D≤1422mm:

Ovality deviation within 100mm of tube end: 0.01D, maximum 13mm; tube ellipticity deviation: 0.015D, maximum 15mm.

When the outer diameter of the steel pipe is D>1422mm, it is agreed.

Wall thickness deviation:

When the wall thickness is t＞5.0mm:

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

Straightness deviation:

The total deviation of the total length of the steel pipe relative to the straight line should be ≤0.2% of the length of the steel pipe, and the local deviation of the steel pipe within the 1.5m length of each pipe end relative to the straight line should be ≤3.2mm.

Length range:

Length: 3~12mm.

If customers have higher requirements for quality, they can be negotiated.