Rapid Delivery for Galvanized Square Tube With Rectangle - 20×20 40×40 1×1 inch Galvanized Square Tube For Steel Structure – Win Road Detail:
Pre-galvanized square tube base material is galvanized steel straps then ERW welded to steel tubes. The most produced surface zinc coating thickness of pre-galvanized square tube is 30-40g/㎡ in China market .
Hot-dipped galvanized square tube base material is black tube (no surface finish),then going through zinc pool to get the finished product. The zinc coating thickness 200-600g/㎡.
Win Road International Trading Co., Ltd has powerful system of storage, production and distribution based in the steel industrial area of China. The company is able to supply full sizes of tube and customized specification service, achieve one-stop service and save time and effort for customers.
| OD | 10mmx10mm-500mmx500mm |
| Thickness | 0.6mm-3mm for pre-galvanized square tube;2.5-15mm for hot-dipped galvanized square tube; (1-26 Gauge, 0.023inch-0.59inch) |
| Length | 1-11.8m (5.8m, 6m, 6.1m, 6.4m, 7.3m available customized)3ft-39ft (19ft, 19.6ft, 20ft, 21ft, 24ft) |
| Zinc coating | Pre galvanized:40- 120g/m² Hot dipped galvanized:200-600g/m² |
| Raw material | Q195, Q235, Q345 |
| Standard | EN10219,ASTM A500,GB/T6728 |
Galvanized Square Tube Size Chart
| SQUARE TUBE SQUARE HOLLOW SECTION ![]() |
RECTANGULAR TUBE RECTANGULAR HOLLOW SECTION (RHS) ![]() |
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| OD (inch) | OD(mm) | OD(inch) | OD(mm) | OD(inch) | OD(mm) | OD(inch) | OD(mm) |
| 1” x 1” | 25 x 25 | 3 1/2” x 31/2” | 90 x 90 | 3/4” x 1 1/2” | 20 x 40 | 2 1/2” x 4” | 60 x 100 |
| 1 1/4” x 1 1/4” | 30 x 30 | 4” x 4” | 100 x 100 | 1” x 2” | 25 x 50 | 3” x 4” | 80 x 100 |
| 1 1/2” x 1 1/2” | 40 x 40 | 4 5/8” x 4 5/8” | 120 x 120 | 1 1/4” x 2” | 30 x 30 | 4” x 6” | 100 x 150 |
| 2” x 2” | 50 x 50 | 5” x 5” | 125x 125 | 1 1/2” x2 1/2” | 40 x 60 | 4” x 8” | 100 x 200 |
| 2 3/8” x 2 3/8” | 60 x 60 | 6” x 6” | 150 x 150 | 1 1/2” x 3” | 40 x 80 | 6” x 8” | 150 x 200 |
| 2 1/2” x 2 1/2” | 60 x 60 | 8” x 8” | 200 x 200 | 2 1/2” x 3” | 60 x 80 | 8” x 10” | 200 x 250 |
| 3” x 3” | 80 x 80 | more | more | 2” x4” | 50 x 100 | more | |
Usage & Application
Furniture pipe,Structure pipe,Fence post, Greenhouse Frame, Construction, Building material, Steel structure.

Package
1.In bundle only, no other package.
2.In bundle tied with steel straps, plastic cover package, each end of bundle with nylon straps.
Shipping
FAQ:
Q: What’s the surface coating thickness?
A: The common zinc coating thickness is 40g/㎡。
Q: What’s the steel grade of your galvanized square tube?
A: The common steel grade is Q195 (yield strength 195mpa). The base material is non-alloy low carbon steel.
Q: Can you produce special size?
A: We accept customized size. Please do not hesitate contact us to verify the size.
Q:Do you have stock?
A: Yes, we have stock for common size. Please send us the size you were looking for, we will check for you.
Q: About sample.
A: The sample is free of charge for weight less than 1kg.
Note: We send sample by air courier for weight less then 1kg. The courier cost is in charge. We will return the courier fee to customers once we cooperated.
Product detail pictures:




Related Product Guide:
We always continually offer you the most conscientious purchaser services, and the widest variety of designs and styles with finest materials. These efforts include the availability of customized designs with speed and dispatch for Rapid Delivery for Galvanized Square Tube With Rectangle - 20×20 40×40 1×1 inch Galvanized Square Tube For Steel Structure – Win Road, The product will supply to all over the world, such as: Benin, Denmark, Paris, Our company will adhere to "Quality first, , perfection forever, people-oriented , technology innovation"business philosophy. Hard work to keep making progress, innovation in the industry, make every effort to first-class enterprise. We try our best to build the scientific management model, to learn abundant professional knowledge, to develop advanced production equipment and production process , to create the first-call quality products, reasonable price , high quality of service , quick delivery , to give you create new value .
The company leader recept us warmly, through a meticulous and thorough discussion, we signed a purchase order. Hope to cooperate smoothly
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