Hot Products
High Quality China Suppliers Carbon Steel Square & Rectangular Pipe from Leading Factory - 50,000 TONS Stock Available
Specifications
- ✓1. Grade: ASTM A500, EN10025, S235JR, S355JR, A36, Q235, Q355, SS400
- ✓2. Size: 25x25-500x500mm, as per customer's requirement
- ✓3. Surface treatment: black
- ✓4. Length: 4-12m, customizable
- ✓5. Packing: standard sea-worthy packing
- ✓6. Service: punching, painting, galvanizing, cutting, welding, etc.
| SIZE (MM) | THICKNESS (MM) | SIZE (MM) | THICKNESS (MM) |
|---|---|---|---|
| 25x25 | 1.5-2.5 | 25x50 | 1.7-4.0 |
| 30x30 | 1.5-2.8 | 30x50 | 1.7-4.0 |
| 40x40 | 1.7-4.0 | 30x60 | 1.7-5.0 |
| 50x50 | 1.7-5.0 | 40x50 | 1.7-5.0 |
| 60x60 | 1.8-6.0 | 40x60 | 1.7-5.0 |
| 70x70 | 1.8-6.0 | 40x80 | 1.8-6.0 |
| 75x75 | 1.8-6.0 | 50x100 | 1.8-6.0 |
| 80x80 | 1.8-6.0 | 60x120 | 2.0-6.0 |
| 90x90 | 2.0-6.0 | 50x150 | 2.2-8.0 |
| 100x100 | 2.2-8.0 | 75x125 | 2.2-8.0 |
| 120x120 | 4.0-12.0 | 80x120 | 2.2-8.0 |
| 150x150 | 2.75-12.0 | 80x160 | 4.0-12.0 |
| 160x160 | 4.0-12.0 | 100x200 | 2.75-12.0 |
| 200x200 | 4.0-12.0 | 150x200 | 4.0-12.0 |
| 250x250 | 4.0-12.0 | 150x250 | 4.0-12.0 |
| 300x300 | 5.75-12.0 | 100x300 | 4.0-12.0 |
| 400x400 | 6.0-12.0 | 200x400 | 4.0-12.0 |
| ASTM A500 Square & Rectangular Pipe - Chemical Composition by Grade | ||
| Element | Grade B (%) | Grade C (%) |
|---|---|---|
| Carbon (C) | 0.26 max | 0.26 max |
| Manganese (Mn) | 1.20 max | 1.20 max |
| Phosphorus (P) | 0.035 max | 0.035 max |
| Sulfur (S) | 0.035 max | 0.035 max |
| Silicon (Si) | 0.15–0.40 | 0.15–0.40 |
| Copper (Cu) | 0.20 max (opt.) | 0.20 max (opt.) |
| Nickel (Ni) | 0.30 max (opt.) | 0.30 max (opt.) |
| Chromium (Cr) | 0.30 max (opt.) | 0.30 max (opt.) |
| ASTM A500 Square & Rectangular Pipe - Mechanical Properties | ||
| Property | Grade B | Grade C |
| Yield Strength (MPa/ksi) | 290 MPa/42 ksi | 317 MPa/46 ksi |
| Tensile Strength (MPa/ksi) | 414-534 MPa/60-77 ksi | 450-565 MPa/65-82 ksi |
| Elongation (%) | 20% min | 18% min |
| Bend Test | Pass 180° | Pass 180° |
Product Display
Steel pipe production line
Steel pipe warehouse
Steel pipe oiling
Steel pipe PVC packaging
Loaded into container
Transported to the port
In the port yard
Shipping Process
Free Quality Inspection Report
Exhibition
Company Certificate
CE
ISO14001:2015
ISO9001:2015
Alliance Member OF Tianjin Metal Materials Industry Association
Alliance of China Steel Export
China National Association of Metal Material Trade
FAQ
Are you a manufacturer?
Absolutely. We are a direct manufacturer with our own large-scale facility located in Tianjin, China. You are more than welcome to visit us!
Can I place a trial order for just a few tons?
Certainly. We value every partner regardless of the order size. We can easily arrange an LCL (Less than Container Load) shipment to accommodate your specific needs.
Is the sample free of charge?
Yes, we provide samples for free so you can verify our quality. We only ask the courier cost to be covered by the buyer.
How long is the delivery time?
Most standard sizes are in stock and can be shipped immediately. Custom orders typically follow our standard production cycle.
What steel grades do you supply?
We supply a wide range of steel grades including ASTM A500, EN10025, S235JR, S355JR, A36, Q235, Q355, SS400, and others according to your requirements.
What customization services do you provide?
We provide comprehensive secondary processing services, including cutting, punching, painting, welding, galvanizing, and custom packaging.
Contact Us
