Steel Pipe Bend Manufacturer | 3D, 5D & 10D Bends

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Product Description

1. Product Introduction

Unlike standard elbows which are manufactured from pipe or forgings in fixed angle increments, bends are produced by cold or hot bending pipe blanks to exact radii, preserving the pipe's original wall thickness distribution more uniformly than a mitered or segmented elbow assembly. The bending radius is expressed as a multiple of the nominal pipe diameter: a 3D bend has a centerline radius of three times the pipe diameter, a 5D bend five times, and so on. The larger the radius, the more gradually the flow direction changes, which directly translates to lower pressure loss and reduced turbulent wear on the inside surface of the pipe. For large-diameter pipelines — above 16 inches — the cost and pressure-loss advantage of a 5D or 10D bend over multiple 90° elbowsis substantial. Bends also offer an advantage in installation: a single bend can replace several elbows and short pipe spools, reducing the number of weld joints and therefore the total fabrication and inspection cost of the line. Manufactured to ASME B16.49 for pressure pipeline applications, with dimensional and wall-thickness verification at every stage.

2. Product Features

- Bending radii: 3D, 5D, 10D and custom radii for any directional change requirement

- Cold and hot bending methods preserve pipe wall thickness uniformity

- Butt-weld ends ensure full-strength connections at all three points of the bend

- Available from 1/2" to over 72" NPS in seamless and welded construction

- Wall thickness: Sch5 to Sch160, XS, STD, and XXS for high-pressure service

- Carbon steel and stainless steel grades for a full rangeof process conditions

- Manufactured to ASME B16.49 for pipeline bending fittings

- Quality-certified: API, ISO 9001, ISO 14001, ISO 45001, and CE

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