Extra-Long One-Piece Bending

One-piece bending of extra-long profiles is a key need in aluminum profile processing. For conveyor bent rails over 6m, large equipment integral frames, and large-span curved tracks, if you bend in segments and splice, the welds not only visibly hurt appearance but also reduce structural strength. Yet many shops are limited by equipment stroke and cannot do extra-long one-piece bending.

Shanghai Chuangsi Aluminum is equipped with an extra-long CNC press brake, max. machining length 6500mm, capable of one-piece bending of extra-long aluminum profiles over 6m. It reduces splicing welds, gives a clean appearance, and offers higher structural strength. From extrusion and bending to CNC machining and surface treatment, the full process is delivered one-stop.

01 Quality Starts from Raw Materials

Produced from A00 primary aluminum ingot with no scrap aluminum, giving uniform material and stable mechanical properties, ensuring the structural strength of extra-long profiles under long-length conditions.

02 Extra-Long Bending Equipment

Equipped with an extra-long CNC press brake, max. machining length 6500mm, meeting the one-piece bending needs of extra-long profiles and reducing segmented splicing welds.

03 High-Precision Control

Angle tolerance ±1 degree, bend dimensions precisely controlled, ensuring assembly precision.

04 One-Stop Delivery Service

From extrusion and bending to CNC machining and surface treatment, the full process is delivered one-stop, so the customer deals with only one supplier.

Extra-long one-piece bending vs. segmented spliced bending:

Comparison item	Segmented spliced bending	Extra-long one-piece bending
Method	Bend in segments then weld/splice	One profile formed in a single pass
Appearance	Visible welds, splicing marks	Clean, no splicing marks
Structural strength	Strength reduced at welds	Uniform overall strength
Cumulative error	Accumulates over segments, large deviation	Single forming, small deviation
Equipment requirement	Standard press brake	Extra-long CNC press brake
Application	Length-limited, spliceable	High appearance requirements, strong structural integrity

Machining capability parameters:

Item	Parameter/Description
Bending type	L-bends, U-channels, Z-bezels, right-angle bends, obtuse-angle bends, acute-angle bends
Min. bend dimension	10mm
Wall thickness range	1mm-6mm
Max. machining length	6500mm
Angle tolerance	±1°
Applicable alloys	6063-T5, 6061-T6
Machining equipment	Extra-long CNC press brake, CNC machining center
Supporting processing	CNC milling, drilling, tapping, cutting, welding
Surface treatment	Anodizing, hard anodizing, electrostatic powder coating, brushing
Executive standard	GB/T 6892-2023, ISO9001
Production location	Qingpu, Shanghai

Typical applications:

• Extra-long conveyor bent rails

• Integral frames for large equipment

• Large-span curved tracks

• Extra-long equipment frames

• Large cabinet enclosures

FAQ (Frequently Asked Questions)

Q1: What is the difference between extra-long one-piece bending and segmented spliced bending?

A: Segmented spliced bending divides an extra-long profile into segments, bends each, then welds or splices them; its drawbacks are visible welds hurting appearance, reduced structural strength, and cumulative error at splices. Extra-long one-piece bending uses a single profile bent in one pass on an extra-long CNC press brake, max. length 6500mm, giving a clean appearance with no splicing marks, higher structural strength, and better installation precision. Many shops cannot do extra-long one-piece bending due to equipment stroke limits; our extra-long CNC press brake meets this need.

Q2: What is the max. machining length for extra-long one-piece bending?

A: Max. machining length is 6500mm. The longer the bend, the higher the requirements on machine rigidity and precision; our extra-long CNC press brake handles one-piece bending of profiles up to 6.5m. Profiles over 6.5m can be bent in segments and then welded/spliced; we recommend discussing the best solution at the design stage.

Q3: Can the precision of extra-long one-piece bending be guaranteed?

A: Yes. The extra-long CNC press brake precisely controls bend angle and position, with angle tolerance ±1 degree. Compared to segmented splicing, one-piece bending eliminates cumulative error between segments, making overall precision more controllable. Each batch undergoes dimensional inspection to ensure bent parts meet assembly precision.

Q4: How is extra-long one-piece bending priced?

A: Priced by profile length, wall thickness, and bend type. Extra-long profiles over 6m require long-stroke equipment, so per-unit-length cost is slightly higher than standard-length profiles. Free evaluation and quotation on samples. Contact Manager Du at 13611846009.

Q5: What are the MOQ and lead time for extra-long one-piece bending?

A: MOQ is 50kg, supporting small-batch prototyping. Sample lead time is 7-10 days (requiring setup of extra-long bending parameters), and batch lead time is 10-20 days after sample confirmation. Because extra-long one-piece bending requires ensuring long-length precision and setting up machine parameters, sample lead time is slightly longer than standard bending.