Hot dip Galvanized square Tube and Rectangular Steel Pipes

Product Description

Hot dip Galvanized square Tube and Rectangular Steel Pipes

Our Hot Dip Galvanized Square and Rectangular Steel Pipes combine the structural strength of cold-formed hollow sections with superior corrosion protection. The hot-dip galvanizing process immerses the steel pipe in molten zinc at approximately 450°C (840°F), forming a durable, metallurgically bonded zinc-iron alloy coating that provides long-term protection against rust and corrosion.

This coating system offers sacrificial protection—even if the surface is scratched, the surrounding zinc continues to protect the exposed steel. With a typical coating thickness of 40–100 microns (depending on section size and material thickness), these pipes deliver 25+ years of maintenance-free service in most environments.

Ideal for outdoor structures, infrastructure projects, agricultural facilities, and industrial applications where longevity and minimal maintenance are critical.


PRODUCT DESCRIPTION

ParameterDetails
Base Material StandardsASTM A500 (structural), ASTM A53 (general), EN 10219, BS 1387, or as specified
GradesASTM A500 Gr. B / Gr. C, ASTM A53 Gr. B, S235JR / S355JR (EN)
ShapesSquare Hollow Section (SHS) & Rectangular Hollow Section (RHS)
Square Sizes15×15 mm – 500×500 mm
Rectangular Sizes20×30 mm – 400×600 mm
Wall Thickness0.8 mm – 12.0 mm (pre-galvanized); up to 25.4 mm (post-galvanized)
Length3 m – 12 m, or as required
Base SurfaceBlack steel (mill finish) prior to galvanizing


FeatureHot Dip GalvanizedElectro-GalvanizedPre-GalvanizedPaint Coating
Coating Thickness40–100 µm5–20 µm20–30 µm50–200 µm
Corrosion Life25–50+ years2–5 years5–10 years5–15 years
Sacrificial ProtectionYesYesLimitedNo
AdhesionMetallurgical bondGoodGoodMechanical
CostModerateLowLowLow–Moderate
Best ApplicationOutdoor, marine, infrastructureIndoor, automotiveLight structuralArchitectural, color-matched


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Company Profile

Shandong Puxin Stainless Steel Co. Ltd. is a sophisticated manufacturer of steel products.  The company is located in Jinan, China's largest stainless steel products base, adjacent to Tianjing.  We focus on the steel industry for nearly 15 years, we have a wide range of stainless steel products, is a long-term engaged in stainless steel wholesale, sales, processing, distribution of professional company.  Other metal products are also available if required by customers.  The annual export volume is about 1 million tons.  We promise that almost all inquiries will be handled within three hours.  
In a short period of time, Shandong Puxin Stainless Steel Co. Ltd. in the eastern stainless steel market and the whole stainless steel industry in Shandong enjoys a high reputation.  Has a large customer base from all over the country, and established a long-term cooperative relationship.  Customers involved in petroleum, chemical machinery, electric power, water treatment equipment, elevators, kitchenware, food machinery, pressure vessels, solar water heaters and other industries.  "Punctuality, integrity, humanized service" has been my company and all the staff always strictly abide by the principle of development.  

 

Main products
We’re the supplier of a wide range of stainless steel products ( ss plate/sheet, ss coil, ss tube/pipe, ss bar/rod of all shapes, channel steel, angel steel and etc),  and other nonferrous metal products. 
Various Standard and non-standard specifications are both available as customers request. All products we provided are strictly in line with the international standards. 
Products of common specification or grades are adequate in stock, please feel free to contact us if you want a quote or more details about the specific products.


Service and commitment:
Service three guarantees: guarantee quality, guarantee time, guarantee quantity.
Service tenet: strong strength, high quality products, low price, first-class service.
Solemn promise: Reply to the trust of the old and new customers with the best products, the best quality, the lowest price and the most perfect service.
Operating principles: customer first, Excellent quality, great variety, and reasonable price.
Shandong Puxin Stainless Steel Co. Ltd.  will serve the majority of users with good reputation, strong strength, high quality products and low price. I would like to express my heartfelt thanks to the old and new friends and customers who have always cared, supported and helped the company! And sincerely hope to establish long-term cooperative relations with them, mutual benefit and common development .

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