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Produced by cold drawing or cold rolling seamless or welded steel tube through precise dies, followed by stress-relieving annealing. Features tight dimensional tolerances, excellent surface finish, uniform mechanical properties, and high concentricity.
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 piercing a solid billet and cold drawing or hot rolling without any weld seam. Features uniform structure, high pressure resistance, excellent dimensional accuracy, and good mechanical properties.
Seamless square tube is a hollow structural steel profile with a square cross-section, made from seamless round pipes via precision cold drawing, cold forming or hot extrusion. It has no welded seams, uniform wall thickness, high dimensional accuracy and excellent mechanical performance, with good bending, torsion and compression resistance.
Produced by seamless or welded process from alloy steel containing chromium, molybdenum, vanadium, nickel, or other elements to enhance high-temperature strength, creep resistance, and corrosion resistance. Features excellent oxidation resistance, good weldability, and stable mechanical properties at elevated temperatures.
Epoxy coal tar pitch steel pipe
Produced by applying coal tar epoxy coating onto blasted steel pipe surface in multiple layers, often reinforced with fiberglass cloth. Features excellent corrosion resistance, good cathodic disbondment resistance, strong adhesion, and low water absorption.
Manufactured by forging, casting, or machining from steel bar or seamless pipe, then heat treated and surface finished. Features precise threads or smooth bores, reliable sealing, high pressure rating, and easy assembly/disassembly.
Manufactured by forging, casting, or machining from steel bar or seamless pipe, then heat treated and surface finished. Features precise threads or smooth bores, reliable sealing, high pressure rating, and easy assembly/disassembly.
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