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Produced by helically forming steel coil into a tubular shape and welding the spiral seam using submerged arc welding (double-sided or single-sided). Features wide diameter range, good dimensional consistency, high strength, and cost-effective production for large diameters.
Produced by helically forming steel coil into a tubular shape and welding the spiral seam using submerged arc welding (double-sided or single-sided). Features wide diameter range, good dimensional consistency, high strength, and cost-effective production for large diameters.
Produced by forming steel coil or plate into a tubular shape and welding the longitudinal seam using high-frequency ERW (for small to medium diameters) or submerged arc welding LSAW (for large diameters).
Produced by forming steel coil or plate into a tubular shape and welding the longitudinal seam using high-frequency ERW (for small to medium diameters) or submerged arc welding LSAW (for large diameters).
Produced by forming steel strip into a tubular shape and longitudinally welding the seam (ERW, HFW, or laser). Features uniform dimensions, clean surface, good formability, and cost-effective production.
Produced by forming steel strip into a tubular shape and longitudinally welding the seam (ERW, HFW, or laser). Features uniform dimensions, clean surface, good formability, and cost-effective production.
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Add : Building 1, Wealth No.1 Plaza, Huaiyin District, Jinan City, Shandong Province, China
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