Pre-Galvanized Square & Rectangular Tubing
01. Product Overview
A suitable tube profile makes fabrication and assembly easier. Our pre-galvanized square and rectangular tubing combines formed steel sections with a zinc-coated surface for furniture frames, shelving systems, fencing, equipment structures, and general steel fabrication.
We supply pre-galvanized steel tubing made from galvanized steel strip or sheet. The material is formed into the required profile and joined through longitudinal welding. Unlike hot-dip galvanized tubing, the zinc coating is applied before the tube is formed and welded.
Our product range covers two profile types:
- Square Tubing: Equal side dimensions provide a consistent profile for furniture frames, supports, shelving structures, and general fabrication.
- Rectangular Tubing: Different width and height dimensions offer options for frame proportions, mounting positions, and installation layouts.
The galvanized surface provides zinc-based corrosion protection. The coating condition around the longitudinal weld and subsequently processed areas should be considered when selecting tubing for a particular application.
02. Specifications & Product Selection
We offer Q195 and Q235 material options, with product selection based on cross-sectional dimensions, wall thickness, length, and zinc coating requirements.
| Product Type | Pre-Galvanized Square Tubing / Pre-Galvanized Rectangular Tubing |
|---|---|
| Material Grades | Q195, Q235 |
| Manufacturing Process | Galvanized steel strip forming and longitudinal welding |
| Surface Treatment | Pre-galvanized zinc coating |
| Cross-Section | Square / Rectangular |
| Square Tube Dimensions | Side length according to order requirements |
| Rectangular Tube Dimensions | Width and height according to order requirements |
| Wall Thickness | According to application and order requirements |
| Length | Specified according to order requirements |
| Zinc Coating | Coating mass and applicable requirements to be specified |
| Dimensional Requirements | Outside dimensions, wall thickness, length, and tolerances |
| Packaging | Bundled steel tubes with applicable identification and protection |
Selecting the Right Profile
For square tubing, start with the required side dimensions, wall thickness, and connection details. For rectangular tubing, consider the width-to-height ratio in relation to the frame layout and installation space.
Material grade and wall thickness should match the intended fabrication or structural requirements. For applications with specific corrosion-protection requirements, include the required zinc coating and welded-area treatment in your specification.
03. Applications
Our pre-galvanized square and rectangular tubing serves a range of steel fabrication and manufacturing applications:
- Furniture Manufacturing: Tubular profiles for furniture frames, supports, and metal structures.
- Shelving & Storage: Sections for shelving frames, supports, and storage assemblies.
- Fencing & Guardrails: Profiles for fence frames, posts, and related fabricated structures.
- Light Structural Fabrication: Square and rectangular sections for general frameworks and supports.
- Equipment Manufacturing: Tubular profiles for equipment frames, brackets, and supporting structures.
Cutting, drilling, and welding are common fabrication operations. These processes can affect the original zinc coating, so processed areas may require additional corrosion protection depending on the finished product's working environment.
04. Manufacturing & Supply Capability
We are Shanxi Midas Industrial Co., Ltd., established in 2012, with steel manufacturing and supply operations in Shanxi, China.
Our production facility covers 600,000 m² of land, with 10,000 m² of building area.
Our steel product portfolio includes:
- Carbon steel pipes
- Coated steel pipes
- Stainless steel pipes
- Steel coils and strips
- Steel plates and sheets
- Structural steel products
- Steel pipe fittings
For pre-galvanized square and rectangular tubing, important quality considerations include cross-sectional dimensions, wall thickness, longitudinal weld condition, zinc coating, and surface appearance.
Inspection requirements can be specified according to the order, including dimensional tolerances, surface condition, weld appearance, and zinc coating requirements.
We provide technical product consultation, quotation assistance, order communication, and updates on production and inspection progress. Our team can review product specifications and inspection requirements against your intended application and purchasing requirements.
05. Customization & Bulk Supply
We handle product inquiries based on the required profile and order specifications.
The main specification and customization requirements include:
- Profile: Square or rectangular tubing.
- Dimensions: Required square side length or rectangular width and height.
- Wall Thickness: Selected according to the intended application.
- Material Grade: Q195 or Q235.
- Length: Required tube length specified with the order.
- Zinc Coating: Required coating mass and applicable surface requirements.
- Processing: Cutting and other requested processing details for production evaluation.
- Packaging: Bundling, product identification, and transportation protection.
For bulk orders, we review the specifications, total quantity, product combinations, packaging details, and destination before confirming the order arrangement.
MOQ, available specifications, production lead time, and shipment arrangements are confirmed according to the actual order.
06. FAQ & RFQ
What is the difference between pre-galvanized and hot-dip galvanized tubing?
Pre-galvanized tubing is made from steel strip or sheet coated with zinc before forming and welding. Hot-dip galvanized tubing receives its galvanizing treatment after the finished tube has been manufactured. The two processes therefore produce different coating conditions.
Are square and rectangular profiles both available?
Yes. Our product range covers both profile types. Please specify the required square side dimensions or rectangular width and height when requesting a quotation.
Which material grades can I order?
Our listed material options are Q195 and Q235. Please indicate your required grade when submitting an inquiry.
Can I specify a particular tube length?
Please include your required tube length in the order specifications so that we can review the production arrangement.
Does welding or cutting affect the zinc coating?
Yes. Welding and cutting can affect the original zinc coating. The welded and processed areas should be evaluated according to the corrosion-protection requirements of the finished product.
What information should I provide for a quotation?
Send us your product type, cross-sectional dimensions, wall thickness, material grade, required length, zinc coating requirements if specified, order quantity, and destination country or port.
Contact us with your specifications and order quantity. We will review your requirements and provide a quotation based on the requested product details.
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