Precision Steel Tube | UltraTube™

UltraTube™ Specifications

UltraTube™ is a high-performance steel tube made from advanced dual-phase (DP) steel. Its ferrite–martensite microstructure offers a unique combination of high strength, good ductility, and excellent weldability.

Base Material

Made from EU-sourced cold-rolled dual-phase steel, UltraTube™ offers significantly greater yield strength than conventional mild steel grades.

Key Benefits

Engineered for strength
Trusted for safety
Optimised for efficient fabrication

UltraTube™ maintains a good level of formability, excellent weldability, a smooth surface finish, and highly consistent mechanical properties. Enables thinner-wall designs in frames, components, and load-bearing structures where strength and durability are critical.

Certified, Traceable, and Made Locally

Manufactured in New Zealand to AS/EN standards with full mill certification and traceability. Backed by local technical support, an extensive distributor network and fast delivery across Australasia.

High-Performance Steel

UltraTube™ is made from Dual Phase Steel, offering a refined balance of strength, ductility, and superior energy absorption — ideal for automotive and safety critical components.

Reliable Fabrication

Designed for consistent weldability and formability, with low carbon equivalent, smooth finish, and high dimensional accuracy — compatible with most bending and welding methods.

Lightweight, Strong, and Consistent

Achieve weight savings without compromising integrity. UltraTube™ combines high yield strength of 650 MPa+ with ductility for efficient, lightweight designs that stay strong – every batch, every tube.

UltraTube™ Size Tables

UltraTube™ Round Tube Sizes

UltraTube™ Square Tube Sizes

UltraTube™ Rectangle Tube Sizes

UltraTube™ Oval | Flat Sided Oval Tube Sizes

UltraTube™ Specifications

Base Material	Cold rolled, dual-phase and annealed
Yield Strength	450 MPa (BM)
Tensile Strength	780 MPa (BM)
Base Material Standard	EN10131:2006
Product standard	AS 1450
Surface Finish	Steel Grey, Semi-bright finish
Coating Suitability	Excellent for Powder Coating, Paint and Zinc Plating
Standard stocked lengths	5.5m. Custom lengths available.
Tube Profile	Round, Square, Rectangle, Flat-Sided Oval
Tube Thickness	From 1.2mm to 2.5mm
Size Range - Round	From 22.2mm – 44.5mm
Size Range - Square	POA
Size Range - Rectangle	POA
Size Range - FSO	POA
Typical Applications:	Space frames, bullbars, safety cages and load bearing structures

UltraTube™ properties

Yield strength	Tensile strength	EI % on Lo=50mm
509 MPa	810 MPa	18

UltraTube™ Sizing - Round

UltraTube™ Round Tube

Size (mm)	Product Type & Gauge (mm)	Finish	Nom Linear mass (kg/m)					Length per pack
Size (mm)	UltraTube	Finish	1.2	1.4	1.6	2.0	2.5	Length per pack
9.5			0.25	0.28	0.31			100
12.7			0.32	0.39	0.44	0.52		100
15.9			0.43	0.50	0.57	0.67		100
19.1			0.51	0.61	0.68	0.83	1.02	100
22.2	1.6		0.61	0.72	0.81	0.98	1.21	100
25.4	1.6		0.71	0.83	0.93	1.15	1.41	100
28.6			0.78	0.94	1.07	1.32	1.69	48
31.8	1.6, 2.0		0.87	1.04	1.17	1.43	1.80	48
34.9	1.6		0.99	1.15	1.30	1.60	2.00	48
38.1	1.6, 2.0		0.87	1.04	1.17	1.43	1.80	48
41.3	2.0		1.15	1.38	1.52	1.89	2.42	48
44.5	1.6, 2.0		1.06	1.49	1.65	2.03	2.52	48
47.6			1.35	1.57	1.78	2.19	2.78	48
50.8	1.6		1.42	1.67	1.88	2.35	3.02	48
54.0			1.56	1.82	2.03	2.53	3.14	48
57.2			1.61	1.89	2.14	2.66	3.33	24
60.3	1.6		1.72	2.00	2.28	2.80	3.60	24
63.5	1.6		1.71	2.09	2.39	2.99	3.79	24
69.9				2.35	2.67	3.23	4.16	24
76.2				2.56	2.89	3.59	5.47	24
88.9					3.44	4.28	5.33	10
101.6					3.95	4.91	6.11	10
127.0					4.87	6.04	7.68	8
152.4					5.87	7.57	9.24	8

UltraTube™ Sizing - Square

UltraTube™ Square Tube

Size (mm)	Product Type & Gauge (mm)	Finish	Nom Linear mass (kg/m)					Length per pack
Size (mm)	UltraTube	Finish	1.2	1.4	1.6	2.0	2.5	Length per pack
12.7x12.7			0.41	0.48	0.53			100
15.9x15.9			0.51	0.60	0.66	0.83		100
19.1x19.1			0.64	0.75	0.83	1.00		100
22.2x22.2			0.78	0.89	1.03	1.25		100
25.4x25.4			0.89	1.03	1.17	1.42	1.75	100
31.8x31.8			1.11	1.31	1.48	1.79	2.24	50
34.9x34.9			1.22	1.42	1.63	2.01	2.51	49
38.1x38.1			1.32	1.57	1.78	2.13	2.75	49
40.0x40.0			1.43	1.67	1.89	2.26	3.06	49
50.8x50.8			1.81	2.10	2.40	3.94	3.69	49
65.0x65.0				2.78	3.08	3.58	4.78	30

UltraTube™ Sizing - Rectangle

UltraTube™ Rectangle Tube

Size (mm)	Product Type & Gauge (mm)	Finish	Nom Linear mass (kg/m)					Length per pack
Size (mm)	UltraTube	Finish	1.2	1.4	1.6	2.0	2.5	Length per pack
25.4x12.7			0.65	0.76	0.84	1.06		50
31.8x15.9			0.82	1.00	1.13	1.42		50
34.9x19.1			0.95	1.00	1.13	1.42		50
38.1x25.4			1.13	1.50	1.76	1.79	2.24	49
46.5x21.2			1.06	1.49	1.65	2.03	2.52	50
50.8x24.5			1.35	1.62	1.82	2.25	2.78	50
50.8x31.8			1.49	1.74	1.95	2.45	2.94	50
57.2x34.9			1.61	1.89	2.14	2.66	3.33	50
60.0x30.0			1.61	1.89	2.14	2.66	3.33	50
63.5x38.1			1.84	2.09	2.39	2.99	3.26	50
68.0x14.0			1.43	1.67	1.91	2.39		100
68.0x43.0			1.97	2.35	2.67	3.23	4.16	50
70.0x11.0			1.43	1.67	1.91	2.39		100

UltraTube™ Sizing - Flat-Sided Oval & Oval

UltraTube™ Flat-Sided Oval & Oval Tube

Size (mm)	Product Type & Gauge (mm)	Finish	Nom Linear mass (kg/m)					Length per pack
Size (mm)	UltraTube	Finish	1.2	1.4	1.6	2.0	2.5	Length per pack
19.0x12.0		OV	0.43	0.50	0.56	0.67		50
25.4x15.9		FSO	0.65	0.75	0.83	1.00		50
31.8x15.9		FSO	0.71	0.83	0.93	1.15		50
31.8x17.1		OV	0.71	0.83	0.93	1.15		50
32.0x22.0		OV	0.74	0.89	1.01	1.26		50
34.9x15.9		FSO	0.78	0.94	1.07	1.32		50
50.8x15.9		FSO	1.07	1.26	1.36	1.78		50
54.0x35.0		FSO	1.35	1.57	1.79	2.19	2.78	49
59.0x30.0		OV	1.35	1.57	1.79	2.19	2.78	49
72.0x45.0		FSO	1.81	2.14	2.42	3.02	3.85	42
97.0x42.0		FSO			2.89	3.59	4.54	24

UltraTube™ is designed for weight-efficient designs in motorsport, off-road, automotive, and safety-critical applications where strength, reliability, and fabrication ease are essential. Its dual-phase microstructure offers the strength and formability required for complex geometries
that are often difficult to manufacture using conventional alloyed high-strength steels.

The mechanical characteristics of UltraTube™ – high energy absorption, excellent fatigue resistance, and consistent performance – make it well-suited for safety cages, space frames, commercial vehicle fit-outs and heavy-duty off-road accessories. Its ability to deform in a stable, controlled manner helps maintain a low deceleration pulse during impact, improving crash performance and occupant protection.

Dual-phase steels exhibit continuous yielding, transitioning gradually from elastic to plastic deformation rather than showing a distinct yield point. This results in more predictable behaviour during both forming and impact scenarios.

The cold-rolled coil used to manufacture UltraTube™ is produced through intercritical annealing on a continuous annealing line (CAL). This process precisely controls phase transformations to achieve the dual-phase structure, ensuring uniform thickness and consistent mechanical
properties throughout the coil and into the final tube.

Industrial Tube Manufacturing’s precision tube-forming process uses high-frequency induction (HFI) welding to produce a tube with excellent dimensional accuracy, a minimal internal weld bead, and a narrow and controlled heat-affected zone (HAZ). The result is a clean, consistent
tube optimised for demanding applications where strength and reliability matter most.

Product Specification

Two UltraTube™ variants are available: UltraTube™ for general fabrication and UltraTube RS™ for motorsport.

UltraTube™ can be produced in circular, square, rectangular, and oval profiles from 22.2 to 76.2 mm, with minimal MOQs. It delivers high strength, tight dimensional control, and a smooth cold-rolled surface suited to precision fabrication. As with all high-strength structural steels, forming, welding and joint detailing should be carefully considered and controlled to preserve material properties across fabricated assemblies. UltraTube™ enables lightweight, efficient structural designs without compromising reliability or ease of manufacture.

Tolerances and delivery conditions

Manufactured in New Zealand to the delivery and dimensional requirements of AS 1450 and EN 10305- 3, with mechanical properties verified per the UltraTube™ specification and mill test certificate (MTC). Delivery is to EN 10131:2006 Class B thickness tolerances, with a tight, symmetric range. Tensile testing for UltraTube RS™ is to AS 1391:2020 and base steel meets the mechanical requirements of EN 10338:2015 (cold-rolled dual-phase). Each UltraTube RS™ order is supplied with an MTC and is fully traceable. Tubing is line-marked for easy identification. Typical imperial mechanical-tubing standards—ASTM A513, ASTM A519, and AMS-T-6736—specify wall-thickness tolerances of ± 10%. UltraTube 1.6mm and 2.0mm nominal gauges are targeted to align with 0.065” and 0.083” sizing while remaining compliant with EN 10131 tolerances. Minor variation may occur between coil batches.