



To make galvanized square pipe, manufacturers begin with galvanized steel strip. After unpacking and leveling, the strip is curled and welded into a round tube. That round tube then gets rolled into a square profile. The last step is cutting it down to the required length.
Galvanized Square Pipe – Key Specifications
Available grades: A106, A53, and other standard options
Size range: From 19×19mm up to 500×500mm, customizable based on customer needs
Surface finish: Hot-dip galvanized
Length options: 2m, 5.8m, 6m, or 12m – length can be adjusted upon request
Packaging: Standard packaging suitable for sea freight
Value-added services: Punching, painting, cutting, welding, and more
Galvanised Iron Pipe and Galvanised Steel Tube offer strong all-around mechanical properties. Their performance stays consistent, and the quality is hard to beat. Why are galvanized rectangular pipes so widely used? Because they deliver clear advantages during actual use. They meet the demands of many different industries. With very stable service quality, they show excellent resistance to corrosion. That means you don't have to worry about quality risks.
Square tubes can be grouped by cross-sectional shape:
(1) Basic square tubes – standard square and rectangular profiles;
(2) Complex square tubes – flower-shaped, open-ended, corrugated, and other custom special-shaped sections.
By metal surface treatment, galvanized square tubes fall into these types:
Hot-dip galvanized square tubes, phosphatized square tubes, oil-coated square tubes, and pickling-passivated square tubes.
By primary application, galvanized square tubes are used in:
Decorative and design projects, mechanical equipment (industrial grade), chemical plant piping, steel frame structures, shipbuilding, trolley frames, and steel columns or beams.
By wall thickness, galvanized rectangular tubes break down as:
Ultra-thin-walled rectangular tubes, thin-walled rectangular tubes, and thick-walled rectangular tubes.
From building facades to heavy industry, galvanized square steel pipes serve a broad range of purposes. Key sectors include construction (curtain walls, glass curtain walls, steel structure engineering), manufacturing (machinery, agricultural equipment, chemical machinery, automobile chassis), energy (solar supports, power plants), and infrastructure (shipbuilding, airports).
Why Work With Us – Key Advantages
Ready-to-use supply – We offer direct delivery of finished products. No extra processing needed on your end.
Import customs handled – Let us take care of the paperwork. We act as your agent for import customs clearance, saving you time and trouble.
Market knowledge – We know this market inside and out. From pricing trends to material availability, we've got you covered.
Solid reputation – We've built a good name over the years. Trust and reliability are part of our service.
As China metal materials industry leading enterprises, the national steel trade and logistics "Hundred good faith enterprise",China steel trade enterprises, "Top 100 private enterprises in Shanghai”. Shanghai Zhanzhi industry Group Co., Ltd.,(shorted to Zhanzhi Group) takes the" Integrity, Practicality, Innovation, Win-Win " as its sole operation principle, always persist in putting the customer demand in the first place.


