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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.
Manufactured by seamless or welded process (ERW, LSAW, SSAW) from high-strength carbon steel, designed for crude oil, refined petroleum product, and natural gas transmission. Features high pressure resistance, excellent low-temperature toughness, good weldability, and uniform dimensional accuracy.
Manufactured by seamless or welded process (ERW, LSAW, SSAW) from high-strength carbon steel, designed for crude oil, refined petroleum product, and natural gas transmission. Features high pressure resistance, excellent low-temperature toughness, good weldability, and uniform dimensional accuracy.
Manufactured by seamless or welded process (ERW, LSAW, SSAW) from high-strength carbon steel, designed for crude oil, refined petroleum product, and natural gas transmission. Features high pressure resistance, excellent low-temperature toughness, good weldability, and uniform dimensional accuracy.
Manufactured by seamless or welded process (ERW, LSAW, SSAW) from high-strength carbon steel, designed for crude oil, refined petroleum product, and natural gas transmission. Features high pressure resistance, excellent low-temperature toughness, good weldability, and uniform dimensional accuracy.
Manufactured by seamless cold drawing or hot rolling from killed carbon steel or alloy steel, designed for high temperature and high pressure service. Features excellent creep rupture strength, good oxidation resistance, fine grain structure, and dimensional accuracy.
Manufactured by seamless cold drawing or hot rolling from killed carbon steel or alloy steel, designed for high temperature and high pressure service. Features excellent creep rupture strength, good oxidation resistance, fine grain structure, and dimensional accuracy.
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