Corrosion-resistant metallurgical composite bimetal longitudinally welded steel pipe
The company can produce 100,000 tons of corrosion-resistant metallurgical composite bimetal longitudinally welded steel pipes per year. The products are mainly used in the manufacture of highly corrosive petroleum and natural gas transmission pipelines, highly corrosive chemical medium transmission pipelines and equipment, seawater desalination equipment water pipelines and seawater heat exchanger manufacturing, thermal power heat exchanger pipes and drinking water Conveying pipelines, etc.
Diameter: Ф406.4~Ф1422mm.
Wall thickness: 7.1~34.9mm (base layer wall thickness 6~30mm, cladding wall thickness 1~5mm).
Steel grade:
⑴Base material: L290/X42~L480/X70, Q235~Q355;
(2) Cladding materials: 304/304L, 310S, 316L, 317L, 321, alloy 825, alloy 625, etc.
Executive standard: API SPEC 5LD and SY/T 6623-2018 and other domestic and foreign standards of similar products and other higher standards.
Product main parameters (SY/T 6623-2018):
Outer diameter deviation:
The outer diameter deviation within 100mm of the pipe end: ±0.01D; the outer diameter deviation of the pipe body: -0.0025D, +0.0075D, ** is ±3.2mm.
Ovality deviation:
Ovality deviation within 100mm of pipe end: 0.01D, ** is 5mm; tube ellipticity deviation: 0.015D, ** is 10mm.
The local irregularity of the inner surface is less than 0.005D, and the ** is not more than 2mm, measured with an inner diameter gauge, covering an arc length of 200mm.
Wall thickness deviation:
Base tube: when the wall thickness is t＞5.0mm:
Wall thickness deviation: ±0.1t, ** is ±1.5mm.
Corrosion-resistant alloy layer: 0, +2mm.
Straightness deviation:
The deviation of steel straightness should not exceed 2% of the pipe length.
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 | nominal W.T mm | ||||||||||||
mm | in | 7.1 | 7.9 | 9.53 | 12.7 | 14.3 | 15.9 | 19.1 | 22.2 | 25.4 | 28.6 | 31.8 | 34.9 |
406.4 | 16 | ||||||||||||
426 | |||||||||||||
457 | 18 | ||||||||||||
508 | 20 | ||||||||||||
529 | |||||||||||||
559 | 22 | ||||||||||||
610 | 24 | ||||||||||||
630 | |||||||||||||
660 | 26 | ||||||||||||
711 | 28 | ||||||||||||
720 | |||||||||||||
762 | 30 | ||||||||||||
813 | 32 | ||||||||||||
820 | |||||||||||||
864 | 34 | ||||||||||||
914 | 36 | ||||||||||||
920 | |||||||||||||
965 | 38 | ||||||||||||
1016 | 40 | ||||||||||||
1020 | |||||||||||||
1067 | 42 | ||||||||||||
1219 | 44 | ||||||||||||
1220 | 46 | ||||||||||||
1321 | 48 | ||||||||||||
1420 | |||||||||||||
1422 | 56 | ||||||||||||