Lightweight Steel Tubes

Lightweight steel tubes are ERW sections for fencing, frames, and non-water fabrication work in the Philippines. Start with the section and wall specified in your drawings.

Illustration of two separated black and galvanized STRUX structural tubes with black identification bands

Product forms: Black iron and galvanized lightweight steel tubes
Use limitation: For non-water structural and fabrication work

Applications

Follow the approved section and loads for each assembly. These tubes are for non-water structural and fabrication work.

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What are lightweight steel tubes?

Lightweight steel tubes are ERW-manufactured sections intended for non-water structural and fabrication work. Supreme publishes black and galvanized options for fencing, railings, scaffolding, frames, and general fabrication.

A steel tube is not selected by weight alone. Confirm the section, outside dimensions, wall, finish, fabrication details, loading, and PNS 2145:2020 requirements named in the approved design.

STRUX is Supreme’s lightweight steel tube brand for non-water fabrication.

Explore architectural steel tube applications for fabricated assemblies.

Choose black or galvanized finish.

Choose the finish for exposure and fabrication. Plan cutting, welding, drilling, bending and coating repairs.

Black Iron (BI): Ungalvanized steel tube. State the required paint or corrosion-protection system in the fabrication documents.
Galvanized Iron (GI): Steel tube with a zinc-coated finish. Plan coating repairs where fabrication affects the finish.

Choose the section and wall.

The finished assembly determines the right tube. Shape, dimensions, fabrication, exposure, and loading need to be reviewed together.

Section and loads: Use the section and wall in the fabrication drawings. Railings and guards need approved connections and safety loads. Scaffolding requires engineered systems and approved components that meet the governing safety and load requirements.
Non-water use: This family is published for structural and fabrication work. Use a piping product and standard for transported fluids.

Compare lightweight steel tube sizes and standards.

Compare PNS 2145:2020 rows from 15 to 100 mm with the ASTM A53/A53M reference from 125 to 300 mm. Ask our technical team for the mass of the 50 mm tube.

PNS 2145:2020Nominal sizes: 15 to 100 mmView tableClose table

Lightweight steel tube dimensions from 15 to 100 mm. Contact us for the 50 mm mass value.

Nominal sizemm	Outside diametermm	Wall thicknessmm	Plain-end masskg/m
15	21.7	1.55	3.942
20	27.1	1.55	5.058
25	33.8	1.80	7.428
32	42.6	1.90	10.038
40	48.7	1.90	11.592
50	60.9	2.00	Ask our technical team
65	73.7	2.75	25.572
80	89.8	2.75	31.320
100	115.4	2.75	40.548

ASTM A53/A53M:2018 referenceNominal sizes: 125 to 300 mmView tableClose table

Published lightweight steel tube reference rows from 125 to 300 mm.

Nominal sizemm	Outside diametermm	Wall thicknessmm	Plain-end masskg/m
125	144.3	3.96	13.41
150	168.3	4.78	19.27
200	219.1	6.35	33.31
250	273.0	6.35	41.75
300	323.8	6.35	49.71

Review the lightweight steel tube specification.

This range is published for non-water structural and fabrication work. A piping service requires a product and standard approved for the transported medium.

Published product profile for Lightweight Steel Tubes
Manufacturing	Electric Resistance Welding (ERW)
Product forms	Black iron and galvanized lightweight steel tubes
Published standard	PNS 2145:2020
Published nominal sizes	15–300 mm across the current tables
End condition	Plain end with black tip
Use limitation	For non-water structural and fabrication work

Before you order

How do I request a quotation?

Send a quotation request with the section, wall, finish, length, quantity and fabrication drawings. New customer? Find regional sales contacts for Luzon, Visayas or Mindanao.

Request a quote for lightweight steel tubes.

Tell us what you plan to make and share your tube specification or fabrication drawings.

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Contact Supreme

Applications

What are lightweight steel tubes?

Choose black or galvanized finish.

Choose the section and wall.

Before you order

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Request a quote for lightweight steel tubes.