Our latest product catalogue and company profile in PDF.
29 pages covering sections, pipes, coils, plates, construction steel and stainless steel, with features and applications.
17 pages on our history, processing base, quality control, supply chain, service and export capability.
Pick a shape, enter the size, length and quantity to estimate the theoretical weight.
Theoretical weight at a density of 7.85 g/cm³. Actual weight varies with rolling tolerance and coating.
Common unit, sheet-gauge and pipe-size conversions for steel orders.
| Unit | Equivalent |
|---|---|
| 1 inch (in) | 25.4 mm |
| 1 foot (ft) | 0.3048 m |
| 1 yard (yd) | 0.9144 m |
| 1 pound (lb) | 0.453592 kg |
| 1 short ton (US) | 907.185 kg |
| 1 long ton (UK) | 1,016.05 kg |
| 1 metric ton (t) | 1,000 kg = 2,204.62 lb |
| 1 ksi | 6.895 MPa |
| 1 MPa | 145.04 psi = 1 N/mm² |
| 1 lb/ft | 1.488 kg/m |
| 1 oz/ft² (zinc coating) | 305.15 g/m² |
| °F to °C | (°F − 32) × 5/9 |
| Gauge | Inch | mm |
|---|---|---|
| 10 | 0.1345 | 3.42 |
| 11 | 0.1196 | 3.04 |
| 12 | 0.1046 | 2.66 |
| 14 | 0.0747 | 1.90 |
| 16 | 0.0598 | 1.52 |
| 18 | 0.0478 | 1.21 |
| 20 | 0.0359 | 0.91 |
| 22 | 0.0299 | 0.76 |
| 24 | 0.0239 | 0.61 |
| 26 | 0.0179 | 0.45 |
| 28 | 0.0149 | 0.38 |
Manufacturers' Standard Gauge for uncoated steel sheet.
| NPS (in) | DN (mm) | OD (in) | OD (mm) |
|---|---|---|---|
| 1/2 | 15 | 0.840 | 21.3 |
| 3/4 | 20 | 1.050 | 26.7 |
| 1 | 25 | 1.315 | 33.4 |
| 1-1/4 | 32 | 1.660 | 42.2 |
| 1-1/2 | 40 | 1.900 | 48.3 |
| 2 | 50 | 2.375 | 60.3 |
| 2-1/2 | 65 | 2.875 | 73.0 |
| 3 | 80 | 3.500 | 88.9 |
| 4 | 100 | 4.500 | 114.3 |
| 5 | 125 | 5.563 | 141.3 |
| 6 | 150 | 6.625 | 168.3 |
| 8 | 200 | 8.625 | 219.1 |
| 10 | 250 | 10.750 | 273.0 |
| 12 | 300 | 12.750 | 323.8 |
Per ASME B36.10M and ISO 6708. Wall thickness depends on schedule (SCH 10, 40, 80…).
Approximate equivalents between Chinese, American, European and Japanese standards.
| China (GB) | USA (ASTM) | Europe (EN) | Japan (JIS) |
|---|---|---|---|
| Q195 | — | S185 | SS330 |
| Q235B | A36 | S235JR | SS400 |
| Q275 | A529 Gr.42 | S275JR | SS490 |
| Q355B | A572 Gr.50 | S355JR | SM490A |
| Q355D | A572 Gr.50 (impact tested) | S355J2 | SM490B |
| DX51D+Z (galvanized) | A653 CS Type B | DX51D+Z | SGCC |
| SPCC (cold-rolled) | A1008 CS | DC01 | SPCC |
| HRB400 (rebar) | A615 Gr.60 | B500B | SD390 |
Equivalents are approximate: chemistry, impact testing and tolerances differ between standards. Always confirm the grade required by your project specification.
| Product | Formula | Unit |
|---|---|---|
| Plate / sheet | Thickness (mm) × 7.85 | kg/m² |
| Round bar | Diameter² (mm) × 0.00617 | kg/m |
| Square bar | Side² (mm) × 0.00785 | kg/m |
| Hexagonal bar | Across flats² (mm) × 0.0068 | kg/m |
| Flat bar | Width (mm) × thickness (mm) × 0.00785 | kg/m |
| Round pipe | (OD − wall) × wall (mm) × 0.02466 | kg/m |
| Square / rectangular tube | (2 × (A + B) − 4 × wall) × wall (mm) × 0.00785 | kg/m |
| Equal angle | Wall × (2 × leg − wall) (mm) × 0.00785 | kg/m |
Practical articles on specifying, inspecting and sourcing steel.
Most bad steel-pipe orders do not start with a dramatic failure. They start with a short RFQ. “Need 200 tons galvanized seamless pipe. Best price.” That is enough for a trader to send a number. It is not enough for a…
Read article →A buyer sees two words on a quotation — “seamless” and “galvanized” — and it is easy to assume the product must be the safest choice. Not quite. Those two features solve different problems. A seamless pipe removes the…
Read article →A purchase order that says only 'galvanized round pipe' leaves too much open to interpretation. The supplier still needs to know the required diameter, wall thickness, steel grade, pipe manufacturing route, coating…
Read article →Send the specification, destination and target volume for an order-specific quote.
