Telescoping steel square tubing blends strength with adjustability, making it ideal for DIY projects, industrial frames, and outdoor structures. This guide highlights five top options that balance durability, corrosion resistance, and length flexibility. Each product features easy cutting, consistent hole patterns where applicable, and varying dimensions to fit a range of builds. Browse these picks to find the right fit for your next project, whether you’re creating adjustable light poles, signposts, or modular frames.
| Product | Size | Material | Key Benefit |
|---|---|---|---|
| Blulu 1 Pcs 1 x 48″ Perforated Tube | 1 x 48 in | Galvanized steel | Perforated with 7/16″ holes; corrosion resistant |
| Blulu 1 Pcs 1-1/4 x 48″ Perforated Tube | 1-1/4 x 48 in | Galvanized steel | Uniform holes; versatile length |
| Blulu 1 Pcs 1-1/4 x 36″ Perforated Tube | 1-1/4 x 36 in | Galvanized steel | Compact, weather-ready |
| Steel Telescoping Square Tube 1-1/4″ x 12″-Long | 1-1/4″ dia; 12″ long | High-quality steel | Direct telescoping capability |
| Steel Telescoping Square Tube 2″ x 12″-Long | 2″ dia; 12″ long | High-quality steel | Robust, adjustable tubing option |
Blulu 1 x 48″ Perforated Tube
Dimensions: approximately 48 inches long, 1 inch square cross-section, 14 gauge thickness. Features a perforated pattern with 7/16 inch holes spaced about 1 inch apart. Manufactured from A36 low carbon steel with a galvanized finish, delivering good corrosion resistance for outdoor use. The tube is designed to withstand harsh weather and offers a long service life. It can be easily cut to desired lengths, providing flexibility for various applications. Uniform hole diameter and spacing simplify installation and alignment.
Blulu 1-1/4 x 48″ Perforated Tube
Dimensions: about 48 inches in length, 1-1/4 inch cross-section, 14 gauge thickness. Hole diameter around 7/16 inch with roughly 1 inch spacing. Galvanized A36 steel construction offers corrosion resistance and weather durability for outdoor installations. Like the 1″ version, this tube can be cut to length with uniform holes across all sides for straightforward assembly and alignment on signs, safety posts, or structural supports.
Blulu 1-1/4 x 36″ Perforated Tube
Dimensions: 36 inches in length, 1-1/4 inch cross-section, 14 gauge thickness. Hole pattern remains consistent with 7/16 inch diameter and about 1 inch spacing. The galvanized A36 steel substrate resists rust and corrosion, supporting outdoor longevity. The tube is easily cut to length, allowing for precise fits in applications like adjustable frame supports or sign assemblies, while maintaining uniform alignment across four sides for simple installation.
Steel Telescoping Square Tube 1-1/4″ x 12″-Long
Dimensions: 1-1/4″ square cross-section, 12″ length; steel construction with telescoping capability, enabling adjustable length in a compact form. The product targets a broad range of projects, including construction, fabrication, and hobbyist builds, due to its strength and machinability. Suitable for creating adjustable frames, supports, or other structural elements that require a reliable, extendable solution. The tubing is designed for easy cutting and modification as project needs evolve.
Steel Telescoping Square Tube Combo Pack 2-1/4″ and 2″
Combo pack includes two tubing sizes: 2-1/4″ and 2″ square cross-sections, each at 12″ lengths. Made from high-quality steel to deliver substantial strength for fabrications, machinery frames, or DIY projects. The set provides flexibility for telescoping applications where multiple inner and outer tube configurations are required, making it easier to prototype and adapt designs without sourcing separate pieces. Machinability supports cutting, drilling, and joining as part of fabrication workflows.
OnlineMetals A500/A513 Carbon Steel Square Tubing
Dimensions: 1.5″ x 1.5″ cross-section, 0.12″ wall thickness, 36″ length. Hot-rolled carbon steel, ASTM A36 compatible stock. This square tubing is suitable for structural frames, racks, fixtures, and shop projects. It offers a rigid profile ideal for fabrication, welding, and assembly. The smooth mill surface supports easy cutting, drilling, and finishing, and it can be integrated with telescoping designs using matched outer sizes for strong, lightweight assemblies.
Buying Guide
Key considerations when selecting telescoping steel square tubing include material and finish, wall thickness, outer and inner dimensions, and compatibility with existing components. Galvanized or galvanized-coated tubes provide corrosion resistance for outdoor use, while plain steel offers cost advantages for indoor projects. Consider wall thickness (like 14 gauge at 1.93 mm) for load-bearing needs and the available inner diameter to ensure smooth inner tube movement. Uniform hole patterns simplify alignment when perforations are involved. For precise joints, check machining tolerances and plan for cutting, drilling, or welding during fabrication. When integrating with other sizes, verify compatibility with standard dimensions (1-1/4″, 2″ and similar) to facilitate telescoping assemblies. Durability under outdoor conditions should guide material choice and finish.