Shaped members, not pipeline
Square and rectangular hollow sections form one of the six lines in this catalogue, and they are shaped structural members rather than pipeline. That distinction is the starting point for selection. A hollow section is chosen for the frame or structure it becomes part of, and its square or rectangular cross-section is the feature that defines it. A buyer who starts from the structure, rather than from a pipeline route, has the right frame for the discussion.
The company homepage uses the column names RHS and SHS for this line, and this article uses those names only as column names for the square and rectangular shapes. The line page for square and rectangular hollow sections remains the reference for the line, and this article discusses selection in general terms without adding a specification table. A buyer who needs a particular size or shape should name it as a question in the enquiry.
Square against rectangular
The choice between a square section and a rectangular section turns on the structure it serves. A square section presents the same face in both directions, while a rectangular section presents a longer face in one direction and a shorter face in the other. A buyer should describe the structure in general terms: which direction carries the main load, which direction faces the main span, and how the member joins to its neighbours. Those three points let the reply address the shape actually wanted.
A message that names only the word hollow section leaves the reply to ask which shape is meant, and a message that names only a shape leaves the reply to ask what structure it serves. The enquiry should name the shape and the structure together, with the quantities, so that the reply can settle the terms for a specific order rather than answering for hollow sections in general.
Building frames and structural work
Construction and building is the application direction most closely tied to hollow sections, and the structure pipe guide in this catalogue discusses pipe for structural work in general terms. A building frame job raises questions about span, jointing, handling on site and the sequence of erection, and those questions differ from the route and jointing questions of a pipeline job. A buyer with a frame job should describe the frame in those terms, naming the shape and the quantities.
The enquiry for a frame job should also name the site conditions in general terms, since handling and erection depend on what the site allows. A buyer who describes the frame, the shape, the quantities and the site together gives the reply a complete picture, and the reply can then confirm the price, the quantity terms and the timing before payment for the items actually named.
Hollow sections against scaffolding tube
Hollow sections and scaffolding tube are sometimes confused, because both involve steel members used around buildings. The difference is the job: hollow sections become part of a permanent frame or structure, while scaffolding tube serves temporary access and support and is removed when the work ends. A buyer choosing between the two should name the job duration and purpose in the first message, since that point alone usually settles the choice.
The catalogue guides keep the two lines apart, and a buyer who reads the hollow section guide alongside the scaffolding systems guide will have both jobs in view. The enquiry should name the job type in its opening lines, so that the reply can match the message to the right line without a further round of clarification.
Questions an enquiry should settle
A first enquiry about hollow sections should name the line, the shape, the structure it serves, the quantities and the site conditions in general terms, and should ask for the quantity terms, the timing and the documents to be confirmed together. It should also name the destination market in general terms and ask which requirements apply to that market for the items named. No country list is published on this site, and the market question is asked so that the reply can address the requirements of the market actually named.
The enquiry should be addressed to the company, using the company contact details on the contact page, and should name the line exactly as listed. Certificates are available upon request, and a document question should travel with the shape and structure it concerns, so that the reply can answer it for the items actually named rather than in general terms.
Jointing and handling for hollow sections
Jointing is the practical question that follows shape selection for hollow sections. A buyer should describe, in general terms, how the member joins to its neighbours: whether the joint is welded, bolted or a mix of both, and what access the joint needs on site. A shape chosen without a jointing description leaves the reply to ask how the member connects, and a jointing description without a shape leaves the reply to ask which member is meant. The enquiry should name the shape, the structure and the jointing together.
Handling on site belongs in the same message. Hollow sections arrive as long members, and a buyer should describe, in general terms, how they are moved, stored and lifted on site. A site with tight access or limited lifting needs a different handling description from an open site, and the reply can only address the handling question if the enquiry names it. The enquiry should pair the structure description with a handling description, and ask for the timing to be confirmed for the items named.
Checking the enquiry before sending
Before sending a hollow section enquiry, a buyer should read it back against four checks. Does it name the line exactly as listed. Does it name the shape and the structure it serves. Does it name the quantities and the site conditions in general terms. Does it ask for the quantity terms, the timing and the documents to be confirmed together. A message that passes all four checks can usually be answered in one round, while a message that fails any one of them should expect the reply to ask for the missing point.
One last check concerns the market for the frame job. The enquiry should state the destination market in broad terms and ask what requirements govern that market for the members named. This site publishes no country list, and the market question exists so that the reply can speak to the market actually named. Leaving the market out forces the reply to request it, while answering the shape, structure, quantity, timing and market points together lets the reply settle the terms at once.
Certificates available upon request. Please confirm the minimum order quantity in your inquiry before placing an order. Please confirm the lead time with the supplier before placing an order. Please confirm the trade terms and payment method before confirming an order.