Square steel refers to profiles formed into various specific shapes and dimensions through pressure processing; it is named for its square cross-section. Square steel is primarily classified into two types: hot-rolled square steel and cold-drawn square steel. Hot-rolled square steel has side lengths ranging from 5 to 250 mm, while cold-drawn square steel has side lengths ranging from 3 to 100 mm.
Specifications and Dimensions
Specification notation: Cross-section a × cross-section a × length, or simply cross-section a. Example: Square bar 50 × 50 × 1000 or square bar 50 indicates a square bar with a cross-section of 50 × 50 mm and a length of 1000 mm.
Classification
Based on the production process, square bars are primarily classified into two types: hot-rolled square bars and cold-drawn square bars.
Hot-rolled square steel: Produced using a hot-rolling process, which significantly affects the steel’s microstructure. This is the primary production method for most square steel. It refines the steel’s grain size, breaks down its cast structure, and helps eliminate certain internal defects. Hot-rolled square steel has side lengths ranging from 5 to 250 mm.
Cold-drawn square steel: This product is formed through cold working processes—such as cold drawing and bending—at room temperature. Its main advantages include no damage to surface coatings, high production output, and strong ductility. Cold-drawn square steel has side lengths ranging from 3 to 100 mm.
Stainless steel square steel: Stainless steel square steel is primarily used in high-end interior finishes, such as doors and windows.
Cold-drawn steel utilizes cold extrusion technology to produce various types of high-precision, smooth-surfaced round bars, square bars, flat bars, hexagonal bars, and other special-shaped steel products through precise dies.
Concept of Cold-Drawn Reinforcing Bars: Cold-drawn reinforcing bars refer to the process of subjecting reinforcing bars to tensile stress—exceeding the yield strength but remaining below the ultimate strength—to induce plastic deformation, with the aim of conserving steel and increasing the yield strength of the reinforcing bars.
Applications
Square steel is most commonly used in light-gauge steel structures, such as steel roof trusses and residential building frames; stainless steel square steel is primarily used in high-end interior finishes. Additionally, square steel is widely used in various mechanical parts, agricultural machinery components, and tools.
How do I order our products?
Ordering our steel products is very simple. You just need to follow the steps below:
1. Browse our website to find the right product for your needs. You can also contact us through website message, email, WhatsApp, etc. to tell us your requirements.
2. When we receive your quote request, we will reply you within 12 hours (if it is a weekend, we will reply you as soon as possible on Monday). If you are in a hurry to get a quote, you can call us or chat with us online and we will answer your questions and provide you with more information.
3.Confirm the details of the order, such as product model, quantity (usually starting from one container, about 28tons), price, delivery time, payment terms, etc. We will send you a proforma invoice for your confirmation.
4.Make the payment, we will start the production as soon as possible, we accept all kinds of payment methods, such as: telegraphic transfer, letter of credit, etc.
5.Receive the goods and check the quality and quantity. Packing and shipping to you according to your requirement. We will also provide after-sale service for you.
Post time: Jul-03-2026
