Shandong Tianyu Metal Products Co., Ltd. · Liaocheng, Shandong, China [email protected] +86 199 6352 2611
Black square and rectangular steel tubes stacked with open ends

Square and Rectangle Steel Pipe

Square and rectangle hollow sections welded or seamless bare or galvanized for frames racking and load bearing steelwork

Products 10Part of Steel PipeCertificate Mill test certificate

This part of the steel tube range covers hollow sections with four flat faces. It holds galvanized welded square and rectangle pipe plain welded square and rectangle pipe galvanized square and rectangle pipe and the seamless square and rectangle versions so a frame can be specified in whatever wall and surface the job calls for. Welded sections are made to ASTM 53 EN10217 DIN 2458 IS 3589 JIS G3452 and BS1387 in outside sizes from 21.3mm to 660.4mm with wall from 1.5 to 22.2mm and lengths from 0.3 to 18 M. Flat faces are the reason these sections end up in portal frames racking machine bases and fencing because a plate bolts or welds straight on without a saddle cut.

Full Range

All 10 Products in Square/Rectangle Steel Pipe

Square and rectangle hollow sections welded or seamless bare or galvanized for frames racking and load bearing steelwork Items here also sit under Galvanized Steel Pipe, Seamless Steel Pipe.

Bundle of square steel tubes stacked inside a steel-framed shed

Galvanized Square Pipe

Zinc coated square and rectangular hollow section in ASTM JIS and EN BS grades

Specifications
Black square and rectangular steel tubes stacked with open ends

Welded Square Pipe

Welded square and rectangular tube in painted galvanized natural or 3PE coated finish

Specifications
Bundle of square steel tubes stacked inside a steel-framed shed

Seamless Square Pipe

Square hollow section with no longitudinal joint for machine frames and heavy wall duty

Specifications
Stack of black rectangular steel tubes with paper labels

Welded Rectangle Pipe

Square and rectangular welded hollow section finished black galvanized or coated to order

Specifications
Blue coated square steel tubes stacked in a workshop

Seamless Rectangle Pipe

Rectangular hollow section with no joint around it for frames columns and structures

Specifications
Problems Solved

What This Range Is For

Round Pipe Slow to Join

A round section needs a profiled cut or a fitting at every connection. A square or rectangle section presents a flat face so gussets base plates and brackets sit flush and weld in one pass.

Galvanizing Arranged After Fabrication

Sending finished frames out to a galvanizer adds handling a second freight leg and a coating that has to be repaired at cut ends. Galvanized square and rectangle pipe arrives already coated.

Wall Too Light for the Design Load

Welded sections cover 1.5 to 22.2mm wall and the seamless versions go heavier again so the section can be stepped up without changing the outside size the detailer already drew.

Members Cut Down on Site

Length is supplied from 0.3 to 18 M so members can arrive close to finished length instead of being cut out of standard bars in the yard.

A Bill of Materials Written to Several Standards

ASTM 53 EN10217 DIN 2458 IS 3589 JIS G3452 and BS1387 are all quoted so one order covers lines written against different national standards.

Who Buys It

Buyers Who Order From This Range

  • Steel building fabricators pricing portal frames columns and bracing
  • Solar mounting and greenhouse structure manufacturers buying galvanized sections
  • Racking mezzanine and shelving makers working in light wall square tube
  • Machine frame builders who need flat faces for mounting plates and bearing housings
  • Fencing gate and barrier workshops buying coated tube by the bundle
  • Tube stockists covering welded galvanized and seamless sections in one shipment
Core Advantages

Why Source This Range From Tianyu Metal

Welded and Seamless in the Same Shape

Welded square and rectangle pipe covers general structural work and the seamless versions are there when the specification will not take a longitudinal joint or the wall has to be heavy.

Wide Size and Wall Range

Welded sections run from 21.3mm to 660.4mm which is 1/2 inch to 26 inch with wall from 1.5 to 22.2mm while seamless sections are ordered by schedule from SCH5S to SCH160 and XS covering 1.65mm to 80mm.

Galvanized Surface on Both Routes

Galvanized welded and galvanized seamless square and rectangle pipe are both available so an outdoor structure needs no coating step after fabrication.

Grades From Three Standard Families

ASTM A53 GR A and GR B EN S275 S275JR S355JRH S355J2H and GB Q195 Q215 Q235 Q345 with L175 L210 L245 L320 and L360 through L555 are quoted for these sections.

Length Cut to the Member List

Lengths from 0.3 to 18 M on welded sections and fixed 5.8m and 6m lengths on the seamless line mean less offcut lying in the fabrication shop.

Application Scenarios

Where This Range Ends Up

Steel Building Frames and Portals

Columns rafters and bracing in Q235 or Q345 sections bolted through the flat faces without any profiled cutting.

Solar Mounting and Greenhouse Structures

Galvanized square and rectangle pipe for outdoor structures where the coating has to be on the steel before the frame is erected.

Racking Mezzanines and Platforms

Uprights beams handrails and stair stringers cut from light wall sections inside the 1.5 to 22.2mm wall range.

Machine and Conveyor Frames

Welded equipment frames where a flat face carries mounting plates drive brackets and bearing housings.

Fencing Gates and Site Barriers

Galvanized sections for perimeter work that stays outdoors for the life of the site.

Booms Masts and Lifting Structures

Seamless square and rectangle sections chosen where the wall is heavy and no longitudinal seam is wanted in a loaded member.

Buying Guide

What To State When You Order

  1. Give the outside size as width by height and confirm it sits inside the 21.3mm to 660.4mm range

  2. State wall thickness in millimetres for welded sections or as a schedule for the seamless sections

  3. Name the standard and the grade together such as ASTM A53 GR B or GB Q345 so the test scope is fixed before rolling

  4. Say whether the surface is bare or galvanized and confirm the coating is wanted before any fabrication

  5. Give the cut length you want from the 0.3 to 18 M range or ask for the fixed 5.8m and 6m lengths

  6. Confirm end finish and bundle packing so sections arrive square ended and strapped for the destination port

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Questions Buyers Ask

Square/Rectangle Steel Pipe FAQ

Do you supply square and rectangle pipe welded or seamless?

Both. Galvanized welded and plain welded square and rectangle pipe cover general structural work and seamless square and rectangle pipe is supplied where a longitudinal joint is not accepted.

What size and wall range is available?

Welded sections run from 21.3mm to 660.4mm which is 1/2 inch to 26 inch with wall from 1.5 to 22.2mm. Seamless sections are ordered by schedule from SCH5S to SCH160 and XS which covers 1.65mm to 80mm.

Which standards do the welded sections follow?

ASTM 53 EN10217 DIN 2458 IS 3589 JIS G3452 and BS1387. Tell us which standard your drawing quotes and the order is written against it.

What lengths can I order?

Length runs from 0.3 to 18 M on the welded sections and 5.8m and 6m fixed lengths are normal on the seamless line. Cut lengths to your member list can be arranged.

Is the galvanizing applied before or after forming?

The pipe is supplied with the surface already galvanized so you fabricate from coated material rather than sending finished frames out for coating.

Which grades do you quote for these sections?

ASTM A53 GR A and GR B EN S275 S275JR S355JRH and S355J2H and GB Q195 Q215 Q235 Q345 along with the L175 to L555 line pipe grades.

Get a Quotation on Square/Rectangle Steel Pipe

Tell us give the outside size as width by height and confirm it sits inside the 21.3mm to 660.4mm range and we will come back with price, availability and what the mill test certificate will show for square/rectangle steel pipe.