All Products
-
Stainless Steel Strip
-
Stainless Steel Sheet
-
Stainless Steel Plate
-
Stainless Steel Pipe
-
Stainless Steel Bar
-
Galvanized Steel Coil
-
Steel Plate
-
Steel Round Bar
-
Nickel Alloy
-
Seamless Steel Pipe
-
Stainless Steel Beam
-
Copper Plate Sheet
-
Copper Round Bar
-
stainless steel round bar
-
stainless steel channel bar
-
stainless steel angle bar
-
stainless steel coil strip
-
stainless steel flat bar
-
stainless steel circle
-
Pipe Fitting
-
Water Ripple Stainless Steel Sheet
-
Nickel Alloy and Super Alloy
-
cold rolled steel coil
-
copper
-
Nickel Base Alloy Products
-
Others
-
Raian IonescuMaterial quality very good. we have cooperate more than 10 Years. They trade lots kinds of steel material. All material quality good. They duty for all material quality. We are planing continue cooperate with them in the future
Black Surface Treatment Square Steel Tube 25x25 to 200x200 for Pipeline Transport
Product Details
| Section Shape | Square | Size Range | 25x25 To 200x200 |
|---|---|---|---|
| Thickness Range | 1.2mm To 15.75mm | Length | 6M (customizable) |
| Material | A106B, SS400, S235JR, S275JR, S355JR, 1020, 1045, 4140 | Surface Treatment | Black, Galvanized, Painted |
| Outer Diameter | 20x20 To 500x500 | Wall Thickness | 0.6mm To 28mm |
| Production Capacity | 500,000 Kgs | MOQ | 10 Tons Per Size |
| Lead Time | 30 Days | Packing | Wooden Box, Bundles |
| Square Tube Size | 10x10 To 1000x1000 | Rectangle Tube Size | 20x40 To 400x700 |
| Window Section Size | 28mm/38mm | ||
| Highlight | Black Surface Treatment Square Steel Tube,25x25 to 200x200 Hollow Steel Pipe,Pipeline Transport Carbon Steel Tube |
||
Product Description
Hot Sale Square Steel Tubes
High-quality carbon steel square pipes available in sizes from 25x25mm to 200x200mm, perfect for structural applications across various industries.
Product Specifications
| Product Type | Size Range | Thickness |
|---|---|---|
| Square Pipe | 10mm×10mm - 1000mm×1000mm | 1.2mm - 30.0mm |
| Rectangle Pipe | 20mm×40mm - 400mm×700mm | 1.2mm - 30.0mm |
| Round Pipe | OD10mm - 1000mm | 4mm - 30mm |
Product Details
- Materials: A106B, SS400, S235JR, S275JR, S355JR, 1020, 1045, 4140, etc.
- Surface Treatment: Black, galvanized, or painted
- Standard Length: 6 meters (custom lengths available)
- Packing: Export standard packaging (bundles, seaworthy containers)
- Delivery Port: Shanghai, China
- Lead Time: Within 30 days after receiving L/C or deposit
- MOQ: 10 Tons per size
- Production Capacity: 10,000MT per month
Applications
Widely used in structural applications, automotive manufacturing, ornamental work, medical equipment, sports equipment, and home furniture.
Standard Size Specifications
| Size (Outer Dimension) | Wall Thickness | Length |
|---|---|---|
| 20x20 / 25x25 | 1.2mm - 2.75mm | 6M (Customized Available) |
| 30x30 / 20x40 / 30x40 / 25x40 | 1.2mm - 3.5mm | 6M (Customized Available) |
| 40x40 / 50x50 / 30x50 / 25x50 | 1.2mm - 4.75mm | 6M (Customized Available) |
| 60x60 / 50x70 / 40x80 / 40x50 | 1.2mm - 5.75mm | 6M (Customized Available) |
| 100x100 / 120x120 / 140x140 / 150x150 | 1.8mm - 10.0mm | 6M (Customized Available) |
| 200x200 / 250x250 / 300x300 / 400x400 | 3.5mm - 15.75mm | 6M (Customized Available) |
Product Gallery
About Our Company
We are a comprehensive steel pipe enterprise specializing in production, processing, and sales of various steel tubes including square tubes, seamless square tubes, thick wall square tubes, and specialized profiles.
Product Range
Our manufacturing capabilities include square tubes from 20×20mm to 800×800mm and rectangular tubes from 20×30mm to 400×800mm, with thickness ranging from 0.6mm to 28mm across 2,800 different specifications.
Industry Applications
Our products serve multiple industries including steel structures, large venues, exhibition centers, lifting machinery, shipbuilding, storage shelves, transportation facilities, airport construction, railway vehicles, and wind power equipment.
Company Advantages
Competitive Pricing
Strategic partnerships with steel manufacturers ensure lowest market prices while maintaining strong financial stability and diverse operational models.
Quality Assurance
Professional quality control from procurement to sales with comprehensive auditing and tracking to ensure reliable product quality and quick resolution of quality concerns.
Comprehensive Service
24-hour distribution services via multiple transport methods, complete product catalog, and streamlined ordering processes through various communication channels.
Recommended Products

