Curved steel pipe is manufactured using medium-frequency induction heating bending technology, which provides concentrated heating for efficient and precise bending. During production, heating temperature and bending processes are strictly controlled to prevent intergranular cracks or cross-sectional deformation, ensuring the mechanical performance and service life of the bends. They are suitable for various industrial piping systems, particularly excelling in large-diameter and thick-walled pipe applications.

Product Parameters

Parameter Category	Description
Material Type	Straight-seam steel pipe, Seamless steel pipe
Processing Method	Medium-frequency induction heating bending (hot bending)
Common Angles	45°, 90°, 180°, etc.
Bend Radius (D)	1D, 2D, 3D, 4D, 5D, 6D, etc.
Applicable Pipe Diameter	Nominal diameter ≤ 200mm (hot bending recommended); >200mm can use welded bends
Surface Treatment	Optional anti-corrosion, painting, etc.
Standards	National standards (GB), industry standards, etc.
Application Scope	Structural construction, tunnel support, petrochemical pipelines, subway projects, machinery equipment, etc.

Product Advantages

High Forming Accuracy: Uses medium-frequency heating and mechanical control for accurate bend curvature and low ovality.
Excellent Strength Retention: Uniform heating avoids intergranular damage, preserving the original mechanical properties.
Wide Applicability: Curved steel pipe Supports various pipe diameters, wall thicknesses, and bending angles for high flexibility.

Main Applications

Architectural steel structures: Used in manufacturing curved roofs, beams, columns, stair railings, door/window frames, and decorative structures, combining aesthetics with strength.
Tunnel and subway engineering support structures: Serves as tunnel support, pipe gallery brackets, and subway station structural components, providing reliable support and spatial adaptability.
Petrochemical pipeline systems: Suitable for elbows and connecting parts in oil/gas transmission and chemical pipeline systems, offering pressure resistance and good sealing.

Frequently Asked Questions (FAQ)

Q1: Are curved steel pipes prone to cracking after bending?

A1: If the process is not properly controlled, minor intergranular cracks may occur. We use precise medium-frequency heating and temperature control, combined with internal sand-filling techniques, to effectively prevent crack formation.

Q2: How is the ovality of curved steel pipe controlled?

A2: We optimize heating temperature, bending speed, and support techniques to ensure ovality meets national standards. Products exceeding tolerances are scrapped and remanufactured.

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