Black Pipe
Construction Pipe 50*50mm 4x4 Square Tubing Square Pipe 20mm Metal Square Tube for Steel Fence post
SMSTEELSquare/ Rectangular Tube
● Pre-galvanized square/rectangular tube: Pre-galvanized square/rectangular tube is made of hot dipped galvanized steel strip directly.
● Hot dipped galvanizedsquare/rectangular : Hot dipped galvanized square/rectangular tube owns thicker zinc coating than pre-galvanized square/rectangular tube. Black tubes will be dipped into zinc pool for galvanizing.
● Electro galvanized square/rectangular : The technology of electro galvanized square/rectangular tube is similar to hot dipped galvanized tube, but the thickness of zinc coating is less than hot dipped galvanized tube.
● Painted square/rectangular:Painted square/rectangular to remove the rust and clean the oil first and then paint the required color paint.
Standard:GB/T6728:2002 , ASTM A500 , JIS G3466 , EN10210 ,EN10219
Steel Grade:
GB/T6728:2002 : Q195 , Q235 , Q345
ASTM A500:GR. A , GR. B, GR. C , GR. D
JIS G3466 : SS440,SS540
EN10210, EN10219: S235JR ,S275JR,S355JR, S355J2H
SMSTEELSquare Tube
| Size | Wall thickness | Size | Wall thickness | Size | Wall thickness | Size | Wall thickness |
| mm | mm | mm | mm | mm | mm | mm | mm |
| 10x10 | 0.6-0.8 | 42x42 | 1.2-6.0 | 90x90 | 2.5-6.0 | 150x150 | 4.0-8.0 |
| 12x12 | 0.6-0.8 | 45x45 | 1.2-6.0 | 95x95 | 2.5-6.0 | 160x160 | 4.0-8.0 |
| 13x13 | 0.6-2.0 | 48x 48 | 1.2-6.0 | 100x100 | 2.5-6.0 | 180x180 | 4.0-8.0 |
| 15x15 | 0.7-2.0 | 50x50 | 1.5-6.0 | 105x105 | 2.5-6.0 | 200x200 | 5.0-10.0 |
| 16x16 | 0.7-2.0 | 55x55 | 1.5-6.0 | 110x110 | 3.0-6.0 | 220x220 | 8.0-25.0 |
| 20x20 | 1.0-3.0 | 60x60 | 1.5-6.0 | 115x115 | 3.0-6.0 | 250x250 | 8.0-25.0 |
| 25x25 | 1.0-3.0 | 65x65 | 2.0-6.0 | 120x120 | 3.0-6.0 | 280x280 | 8.0-25.0 |
| 30x30 | 1.2-4.0 | 70x70 | 2.0-6.0 | 125x125 | 3.0-6.0 | 300x300 | 8.0-25.0 |
| 35x35 | 1.0-4.0 | 75x75 | 2.0-6.0 | 130x130 | 3.0-6.0 | 350x350 | 8.0-25.0 |
| 38x38 | 1.0-5.0 | 80x80 | 2.5-6.0 | 135x135 | 4.0-14.0 | 400x400 | 8.0-25.0 |
| 40x40 | 1.0-6.0 | 85x85 | 2.5-6.0 | 140x140 | 4.0-8.0 | 450x450 | 8.0-25.0 |
| 500x500 | 8.0-25.0 |
SMSTEELCommon Uses Square Tube
The resistance of square tubes gives them a wide scope of outdoor applications. Their hollow interior makes them excellent for transporting fluids like gasoline, water, and other petroleum products too.
Despite their robust structure, these tubes are relatively light and can be bent to accommodate different use cases. They’re also essential components in the production of certain equipment, mechanical parts, and industrial infrastructure.
SMSTEELRectangular Tube
| Size | Wall thickness | Size | Wall thickness | Size | Wall thickness | Size | Wall thickness | Size | Wall thickness |
| mm | mm | mm | mm | mm | Mm | mm | mm | mm | mm |
| 20x10 | 0.7-2.0 | 70x25 | 1.2-6.0 | 100x90 | 2.0-6.0 | 130x50 | 2.0-6.0 | 150x110 | 2.0-6.0 |
| 20x14 | 0.7-2.0 | 70x30 | 1.2-6.0 | 110x25 | 2.0-6.0 | 130x60 | 2.0-6.0 | 150x250 | 3.0-12.0 3.0-12.0 |
| 20x15 | 0.7-2.0 | 70x40 | 1.2-6.0 | 110x30 | 2.0-6.0 | 130x70 | 2.0-6.0 | 150x300 | 2.0-6.0 |
| 26x13 | 0.7-2.0 | 70x50 | 2.0-6.0 | 110x40 | 2.0-6.0 | 130x80 | 2.0-6.0 | 160x40 | 2.0-6.0 |
| 30x10 | 0.7-2.0 | 70x60 | 2.0-6.0 | 110x50 | 2.0-6.0 | 130x90 | 2.0-6.0 | 160x50 | 2.0-6.0 |
| 30x15 | 0.7-2.0 | 80x20 | 1.2-4.0 | 110x60 | 2.0-6.0 | 130x100 | 2.0-6.0 | 160x60 | 2.0-6.0 |
| 30x20 | 0.8-2.0 | 80x25 | 1.2-6.0 | 110x70 | 2.0-6.0 | 130x110 | 2.0-6.0 | 160x70 | 2.0-6.0 |
| 40x10 | 0.8-2.0 | 80x30 | 1.2-6.0 | 110x80 | 2.0-6.0 | 130x120 | 2.0-6.0 | 160x80 | 2.0-6.0 |
| 40x15 | 1.0-2.0 | 80x40 | 1.2-6.0 | 110x90 | 2.0-6.0 | 140x30 | 2.0-6.0 | 160x90 | 2.0-6.0 |
| 40x20 | 1.0-2.5 | 80x50 | 2.0-6.0 | 110x100 | 2.0-6.0 | 140x40 | 2.0-6.0 | 160x100 | 2.0-6.0 |
| 40x25 | 1.0-2.5 | 80x60 | 2.0-6.0 | 110x140 | 4.0-6.0 | 140x50 | 2.0-6.0 | 180x40 | 2.0-6.0 |
| 40x30 | 1.0-2.5 | 80x70 | 2.0-6.0 | 120x25 | 2.0-6.0 | 140x60 | 2.0-6.0 | 180x50 | 2.0-6.0 |
| 50x11 | 1.0-2.0 | 90x25 | 1.2-6.0 | 120x30 | 2.0-6.0 | 140x70 | 2.0-6.0 | 180x60 | 2.0-6.0 |
| 50x15 | 1.0-3.0 | 90x30 | 1.2-6.0 | 120x40 | 2.0-6.0 | 140x80 | 2.0-6.0 | 180x70 | 2.0-6.0 |
| 50x20 | 1.0-3.0 | 90x40 | 2.0-6.0 | 120x50 | 2.0-6.0 | 140x90 | 2.0-6.0 | 180x80 | 2.0-6.0 |
| 50x25 | 1.0-3.0 | 90x50 | 2.0-6.0 | 120x60 | 2.0-6.0 | 140x100 | 2.0-6.0 | 190x40 | 2.0-6.0 |
| 50x30 | 1.0-3.0 | 90x60 | 2.0-6.0 | 120x70 | 2.0-6.0 | 140x110 | 2.0-6.0 | 190x50 | 2.0-6.0 |
| 50x40 | 1.0-3.0 | 90x70 | 2.0-6.0 | 120x80 | 2.0-6.0 | 140x120 | 2.0-6.0 | 190x60 | 2.0-6.0 |
| 60x15 | 1.0-3.0 | 90x80 | 2.0-6.0 | 120x90 | 2.0-6.0 | 150x30 | 2.0-6.0 | 190x70 | 2.0-6.0 |
| 60x20 | 1.0-3.0 | 100x25 | 2.0-6.0 | 120x100 | 2.0-6.0 | 150x40 | 2.0-6.0 | 200x40 | 2.0-6.0 |
| 60x25 | 1.0-4.0 | 100x30 | 2.0-6.0 | 120x110 | 2.0-6.0 | 150x50 | 2.0-6.0 | 200x50 | 2.0-6.0 |
| 60x30 | 1.0-4.0 | 100x40 | 2.0-6.0 | 120x130 | 4.0-6.0 | 150x60 | 2.0-6.0 | 200x60 | 2.5-6.0 |
| 60x40 | 1.2-6.0 | 100x50 | 2.0-6.0 | 120x140 | 4.0-6.0 | 150x70 | 2.0-6.0 | 200x100 | 3.0-13.0 |
| 60x50 | 1.2-6.0 | 100x60 | 2.0-6.0 | 120x200 | 4.0-6.0 | 150x80 | 2.0-6.0 | 200x300 | 3.0-13.0 |
| 70x20 | 1.0-6.0 | 100x70 | 2.0-6.0 | 130x30 | 2.0-6.0 | 150x90 | 2.0-6.0 | 200x400 | |
| 70x25 | 1.2-6.0 | 100x80 | 2.0-6.0 | 130x40 | 2.0-6.0 | 150x100 | 2.0-6.0 |
SMSTEELapplication
Cookware and other heavy food processing equipment
Architectural wall paneling
Exterior railings and bracket trims
Quarrying and water filtration systems
Heat exchangers
Mining screens
Chemical repositories
Heavy duty springs
Petroleum pipelines
SMSTEELproducts display
