X65MS steel-grade spiral welded tube for acidic corrosion environment and manufacturing method thereof
2011
The invention discloses an X65MS steel-grade spiral welded tube for an acidic corrosion environment and a manufacturing method thereof. The spiral welded tube adopts an X65MS steel-grade coiled sheet. The processing procedures of the spiral welded tube comprise uncoiling, leveling, edge milling, pre-bending, forming, internal welding, external welding, tube end expanding, layering and ultrasonic inspection of a base material, X-ray inspection of a welding joint, hydrostatic test, ultrasonic inspection of the welding joint, tube end chamfering and inspection of the finished product. The X65MS steel-grade spiral welded tube disclosed by the invention has high strength and favorable acid resistance and is suitable for conveying an acid oil-gas medium.
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