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1.Spiral steel pipe is a steel strip coil plate of raw materials, often warm extrusion molding, with automatic double wire welding double-sided submerged arc welding technology with welded steel pipe, spiral steel pipe USES spiral steel tube is mainly used in water engineering, petrochemical industry, chemical industry, power industry, agricultural irrigation, urban construction and household drinking water layer, is one of 20 key products of our country''s development.
Spiral Steel Pipe
