Bright precision high-pressure seamless steel tube is a high-accuracy steel pipe material manufactured through advanced processes including precision drawing, cold rolling, and non-oxidizing bright heat treatment (NBK state). Featuring a bright metallic luster on both inner and outer surfaces, this product delivers exceptional dimensional accuracy, superior surface finish, and an oxide-free layer. It withstands high pressure without deformation during cold bending and is widely used in hydraulic systems, automotive manufacturing, construction machinery, and other applications demanding extreme precision and cleanliness.

Wall thickness tolerance within ±0.1mm, and surface roughness Ra value reaches 0.8–1.6μm. High precision means ready-to-use pipes without secondary processing, significantly saving machining time and material costs.

NBK Non-Oxidizing Bright Heat Treatment

Through non-oxidizing bright heat treatment (NBK state), the steel tube maintains its metallic color and bright appearance with no oxide layer on either surface. This process also ensures uniform mechanical properties, providing reliable performance for subsequent processing and application.

The inner wall is meticulously cleaned using specialized equipment and high-pressure flushing, achieving exceptional cleanliness. This is particularly critical for hydraulic systems-clean inner surfaces extend hydraulic component service life and reduce system failure rates.

The tube resists high pressure without deformation during cold bending, shows no cracks in flaring and flattening tests, and withstands complex deformation and machining. Structural integrity is maintained even when bent at any angle.

: High-pressure oil lines for hydraulic stations, injection molding machines, die-casting machines, and tunnel boring machines

●  Other High-Demand Applications

Each product undergoes comprehensive quality testing, including tensile strength testing, flaring and flattening tests, hardness testing, chemical composition analysis, and non-destructive inspection, ensuring every batch meets international standard requirements.

Choose Bright Precision High-Pressure Seamless Steel Tube-driving your precision manufacturing with uncompromising quality.

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