High-strength corrosion-resistant longitudinal welded pipe
A straight seam welded pipe, corrosion-resistant technology, used in pipeline protection, anti-corrosion coatings, pipeline damage/wear prevention, etc., can solve the problem of strength to be improved, and achieve the effect of improving anti-corrosion performance, enhancing pressure resistance, and improving strength
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[0024] Example 1
[0025] A high-strength corrosion-resistant longitudinal welded pipe includes a welded pipe body. Alloy powder is used to form an alloy layer on the inner wall of the welded pipe body by cladding. The thickness of the alloy layer is 0.5-5 mm. The outer wall of the welded pipe body A layer of anti-corrosion layer is sprayed; an alloy layer is added to the traditional welded pipe to improve the strength of the welded pipe, and an anti-corrosion layer is provided on the outer surface, so that the welded pipe has a very good anti-corrosion performance.
[0026] The thickness of the anti-corrosion layer is 0.1-0.3 cm.
[0027] The preferred thickness of the alloy layer is 1-3 mm.
[0028] The above alloy powder is made of the following components by weight percentage: C: 0.10% to 0.24%, Si: 0.15% to 1.40%, Mn: 1.20% to 2.00%, Ca: 0.40% to 1.60%, Zn: 0.15% to 0.50%, Sb: ≤0.30%, Co: ≤0.12%, Sc: ≤0.03%, Al: ≤0.05%, Se: ≤0.015%, Pt: ≤0.010%, the rest is Fe and unavoidable im...
Example Embodiment
[0033] Example 2
[0034] A high-strength corrosion-resistant longitudinal welded pipe includes a welded pipe body. Alloy powder is used to form an alloy layer on the inner wall of the welded pipe body by cladding. The thickness of the alloy layer is 0.5-5 mm. The outer wall of the welded pipe body A layer of anti-corrosion layer is sprayed; an alloy layer is added to the traditional welded pipe to improve the strength of the welded pipe, and an anti-corrosion layer is provided on the outer surface, so that the welded pipe has a very good anti-corrosion performance.
[0035] The thickness of the anti-corrosion layer is 0.1-0.3 cm.
[0036] The preferred thickness of the alloy layer is 1-3 mm.
[0037] The above alloy powder is made of the following components by weight percentage: C: 0.10% to 0.24%, Si: 0.15% to 1.40%, Mn: 1.20% to 2.00%, Ca: 0.40% to 1.60%, Zn: 0.15% to 0.50%, Sb: ≤0.30%, Co: ≤0.12%, Sc: ≤0.03%, Al: ≤0.05%, Se: ≤0.015%, Pt: ≤0.010%, the rest is Fe and unavoidable im...
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