Straight seam double-sided submerged arc welded steel pipe (SAWL)
The company has three sets of SAWL (JCOE method) LSAW steel pipe units, which can produce 500,000 tons of LSAW steel pipes per year. The product can be used as a steel pipe for land and ocean natural gas transportation, shale gas, petroleum, petrochemical, city gas, water, and mineral slurry. It is also widely used in construction, bridges, offshore platforms, electric power and other engineering fields.
Diameter: Ф406.4~Ф1422mm.
Wall thickness: 6.3~50.8mm.
Steel grade:
⑴Pipeline steel: L245/B~L690/X100;
⑵Carbon steel: Q235~Q460, C60, C65, etc.
Executive standard: GB/T 9711-2017, API SPEC 5L (46 edition), GB/T 3091-2015, SY/T 5037-2018, ASTM A671, ASTM A672 and other domestic and foreign standards of similar products and other higher Standards.
SAWL直缝埋弧焊钢管生产工艺流程图
Process video
Product main parameters (API SPEC 5L (46 version)):
Outer diameter deviation:
When the outer diameter of the steel pipe is 406≤D≤610mm:
The outer diameter deviation within 100mm of the pipe end: ±0.005D, ** is ±1.6mm; the outer diameter deviation of pipe body: ±0.0075D, ** is ±3.2mm.
When the outer diameter of the steel pipe is 610＜D≤1422mm:
The outer diameter deviation within 100mm of the pipe end: ±1.6mm; the outer diameter deviation of the pipe body: ±0.005D, ** is ±4.0mm.
Ovality deviation:
When the outer diameter of the steel pipe is 406≤D≤610mm:
Ovality deviation within 100mm of tube end: 0.015D; tube ellipticity deviation: 0.020D.
When the outer diameter of the steel pipe is 610＜D≤1422mm:
Ovality deviation within 100mm of tube end: 0.01D, ** is 13mm; tube ellipticity deviation: 0.015D, ** is 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 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: 8~12.5m.
If customers have higher requirements for quality, they can be negotiated.
Product nominal outer diameter and nominal wall thickness range table:
| Nominal mm | |||||||||||||||||||||||
in | 7.1 | 9.53 | 14.3 | 19.1 | 25.4 | 31.8 | 38.1 | 44.5 | 50.8 | ||||||||||||||
16 | |||||||||||||||||||||||
457 | 508 | 529 | |||||||||||||||||||||
22 | |||||||||||||||||||||||
24 | |||||||||||||||||||||||
660 | 711 | 720 | |||||||||||||||||||||
30 | |||||||||||||||||||||||
32 | |||||||||||||||||||||||
864 | 914 | 920 | |||||||||||||||||||||
38 | |||||||||||||||||||||||
40 | |||||||||||||||||||||||
1067 | 1219 | 1220 | 1321 | 1420 | |||||||||||||||||||
56 | |||||||||||||||||||||||