Direct Sales High Quality 1/2 /3/4 Inch Seamless Precision Pipe Low Price Seamless Pipe Tube

We specialize in the direct manufacturing and sales of high-precision seamless steel pipes and tubes, with a focus on popular small diameters including 1/2", 3/4", 1" and other inch-based sizes. Our products are manufactured using advanced cold-drawn technology, ensuring exceptional dimensional accuracy, smooth internal surface finish, and superior mechanical properties.
Key Features & Benefits:
●Precision Engineering: Tight tolerance control (±0.10mm) for both OD and wall thickness
●Material Excellence: Made from certified low-carbon steel (Grade 1020/1045) or alloy steel
●Surface Quality: Smooth, scale-free surface ideal for hydraulic and pneumatic applications
●Heat Treatment: Stress-relieved annealing available for improved machinability
●Comprehensive Testing: 100% hydrostatic testing and eddy current inspection

1. Precision Engineering Excellence

Raw Material (Billet) → Heating → Piercing → Elongation → Sizing → Cooling → Heat Treatment → Straightening → NDT Testing → Hydrostatic Test → End Finishing → Inspection → Coating → Packaging

Certification: API 5L/API 5CT, ASTM A106, ISO 9001.
●Steel Grade Customization:
●American Standard (ASTM): Gr. A, B, C, etc.
●European Standard (EN): S235, S275, S355, S420, S460, etc.
●Japanese Standard (JIS): SS400, STKR400, STKR490, etc.
●Chinese Standard (GB): Q195, Q235, Q355, etc.
●Canadian Standard (CSA): 300W, 350W, etc.
Testing: Full compliance with PSL2 requirements (Charpy impact test, hardness test).
From raw material sourcing to finished products, Yuantai Derun implements rigorous quality control at every step. We exclusively use traceable raw materials from reputable manufacturers, subjecting them to comprehensive inspections, including but not limited to:
●Dimensional & Visual Checks (appearance, size, straightness)
●Mechanical Testing (impact resistance, yield & tensile strength, hardness)
●Material Analysis (chemical composition, metallographic examination)
●Non-Destructive & Corrosion Testing (UT inspection, salt spray testing)
Contact us today to discuss your specific testing requirements—we ensure precision and reliability in every pipe.

At Yuantai Derun, we take pride in delivering premium square steel pipes. To let you experience our excellence firsthand, we’re pleased to provide free samples (up to 20 cm in length), shipped directly to you via express air freight—with only the shipping cost on your end.
Why hesitate? Put our materials to the test and discover why Yuantai Derun stands out in quality and reliability. Request your sample today!