Structural & Mechanical Tubes

Square & Rectangular Tube

Black, oiled and galvanized square or rectangular tube for fabrication, frames, racks, fencing and light structural work.

Product Overview

Commercial SHS and RHS tube for repeatable fabrication

Himount supplies square steel tube and rectangular steel tube in black, oiled, bare and galvanized finishes. This product is used where consistent outside size, wall thickness, cut length, surface quality and packing matter for fabrication, construction accessories, furniture, trailers, fences and equipment frames.

SHSSquare tube orders

RHSRectangular tube orders

A500Structural tube reference

A513Mechanical tube reference

Square and rectangular galvanized tube bundles in yard

Rectangular tube bundles in workshop storage

Key Specifications

Product formsSquare steel tube, rectangular steel tube, black square tube, galvanized square tube and galvanized rectangular tube.

Primary standardsASTM A500, ASTM A513, EN 10219, JIS G3466 and GB/T 6728 project references.

Common gradesASTM A500 Gr.B/Gr.C, ASTM A513 mechanical tube orders, S235JRH, S275JRH, S355JRH, STKR400, STKR490, Q235B and Q355B.

Manufacturing routeERW forming and welding for square or rectangular tube; sizing, straightening, cutting, bundling and surface treatment by order.

Size confirmationCommon RFQs specify outside side dimensions, rectangular width and height, wall thickness, length, straightness, corner radius and tolerance.

Surface and packingBlack, bare, lightly oiled, pre-galvanized or hot-dip galvanized options; zinc coating, surface appearance, bundle weight and strapping should be confirmed.

Order detailsConfirm size, wall thickness, length, grade, standard, surface, coating mass if galvanized, quantity, tolerance, MTC, packing and destination port.

Typical Applications

Where square and rectangular tubes are used

Fabrication and framesEquipment bases, welded frames, racks, trailers, work platforms and modular assemblies requiring repeatable tube dimensions.

Fencing and constructionFence posts, railings, gate frames, support members, light building accessories and site structures.

Furniture and general useMetal furniture, display racks, storage systems, vehicle accessories and other fabricated products.

Dimension note

Square and rectangular tube quotations should specify outside dimensions and wall thickness, not only nominal size. Tolerance and corner radius can affect fit-up.

Galvanizing note

For galvanized tube, confirm whether pre-galvanized or hot-dip galvanized supply is required, and state zinc coating, surface appearance and packing needs.

International Model Search Index

Common standards, grades and RFQ terms

Standards and grade calls

ASTM A500 Grade B square tubeASTM A500 Grade C RHSASTM A513 mechanical tubeEN 10219 S235JRH tubeEN 10219 S355JRH RHSJIS G3466 STKR400GB/T 6728 Q235B

Shape and order phrases

square steel tuberectangular steel tubeblack square tubegalvanized square tubegalvanized rectangular tubecut to length RHS

Buyer search phrases

square tube supplierrectangular tube exporterASTM A500 square tubinggalvanized RHS supplierblack rectangular tubeERW square tube factory

Buyer FAQ

Questions to settle before quotation

How is this different from structural hollow section?

This page focuses on square and rectangular tube orders for commercial, fabrication and light structural use. Structural hollow section pages may also include CHS and stricter structural project language.

Which standards are usually requested?

ASTM A500 is common for structural square and rectangular tubing, ASTM A513 is used for mechanical tubing orders, and EN 10219, JIS G3466 or GB/T 6728 may be requested by market.

What surface options can be supplied?

Common options include black, bare, oiled, pre-galvanized and hot-dip galvanized tube. Zinc coating, surface appearance and packing should be confirmed.

What information is needed for quotation?

Confirm square or rectangular size, wall thickness, length, steel grade, standard, surface, quantity, tolerance, bundle packing, certificate requirement and destination port.

Other products in Structural & Mechanical Tubes

Structural Hollow Section Precision & Mechanical Tube

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Share size, wall thickness, length, grade, surface, quantity, certificate and destination details.

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