Heavy Steel Tube Bending With A 115NC

Client Background

This Thai client is a local leading manufacturer specializing in steel structures, construction-machinery accessories, thick-walled round tube, pipe supports and agricultural equipment tubular parts. Before buying Telhoo equipment, the factory ran outdated simple bending machines with prominent pain points:

• Insufficient bending force for large-diameter pipe, causing severe tube collapse and wrinkling with high reject rates
• Thin machine frames that drift out of precision after long continuous operation
• Complicated parameter changes when switching tube sizes, slowing production

After testing multiple Chinese pipe benders and comparing technical performance, the factory selected the 115NC heavy hydraulic pipe bender for its reliable large-tube forming.

Why The 115NC

• Heavy hydraulic power unit — powerful bending thrust for tube up to Φ115 mm, handling thick steel, round, square and galvanized pipe without indentation or wrinkles.
• NC digital angle control — preset bending angles with automatic stroke limit, eliminating repeated manual measurement and keeping angles uniform.
• Integrated thick cast body — high load-bearing, shock-resistant, low failure rate, supporting non-stop 24-hour operation.
• Quick-change modular molds — fast mold replacement across steel structures, guardrails and machinery fittings.

On-Site Production

After delivery to Thailand, Telhoo provided complete export documents, remote commissioning guidance, bilingual operation manuals and maintenance tutorials. Operators independently complete feeding, angle setting and hydraulic bending; the machine runs stably and significantly boosts productivity for large-diameter tubular workpieces.

The Results In Production

On thick-walled structural tube the difference showed up quickly. With enough hydraulic thrust and a rigid cast frame, large-diameter bends that used to collapse or wrinkle now come out clean, lifting large-tube processing efficiency about 70% and cutting the scrap rate roughly 75%. Preset NC angle control removed the repeated hand-measuring between parts, so switching tube sizes no longer stalls the line, and the machine holds precision through 24-hour continuous shifts — exactly what a steel-structure and construction-machinery shop needs to keep delivery on schedule.

Because the frame and hydraulics are sized for heavy work, the same 115NC covers round, square and galvanized pipe up to Φ115 mm without indentation, so one machine serves guardrails, pipe supports, machinery fittings and agricultural tube alike.

The Bending Process Behind It

Heavy structural tube is formed by rotary draw bending, with the clamp, pressure and (where needed) mandrel tooling controlling the wall so thick pipe keeps its section through the bend. The 115NC is the semi-automatic member of that family. See how rotary draw bending and mandrel tube bending work, explore the full NC semi-automatic tube bender range, or read about our pipe spool fabrication for large-diameter piping.