Welding Black Steel Tubes
JIS G3131 ( Hot Rolled Steel Coil )
Round Tube
Oval Tube
| Outside Diameter | Wall Thickness |
|---|---|
| 6 分 | 1.5mm - 2.0mm |
| 7 分 | 1.5mm - 2.3mm |
| 1" | 1.5mm - 3.0mm |
| 1⅛" | 1.5mm - 3.0mm |
| 1¼" | 1.5mm - 4.0mm |
| 1½" | 1.5mm - 4.0mm |
| 42 mm | 1.5mm - 4.0mm |
| 1¾" (44.5 mm) | 1.5mm - 4.0mm |
| 48 mm | 1.5mm - 4.0mm |
| 2" | 1.5mm - 4.0mm |
| 57 mm | 1.5mm - 4.0mm |
| 60 mm | 1.5mm - 4.0mm |
| 2 ½" | 1.5mm - 4.0mm |
| 3" | 1.5mm - 4.0mm |
| 89 mm | 2.0mm - 4.0mm |
| Outside Diameter | Wall Thickness |
|---|---|
| 20mm×40mm | 1.5mm - 2.0mm |
| 20mm×60mm | 1.5mm - 2.0mm |
| 30mm×60mm | 1.5mm - 2.5mm |
| 30mm×70mm | 1.5mm - 3.0mm |
| 40mm×80mm | 1.5mm - 3.0mm |
| 25mm×50mm | 1.5mm - 3.0mm |
| 40mm×97mm | 1.5mm - 3.0mm |
| 40mm×118mm | 2.0mm - 3.0mm |
| 50mm×100mm | 2.0mm - 3.0mm |
Square Tube
Rectangular Tube
| Outside Diameter | Wall Thickness |
|---|---|
| 20mm×20mm | 1.5mm - 2.0mm |
| 1"×1" | 1.5mm - 3.0mm |
| 30mm×30mm | 1.5mm - 3.0mm |
| 32mm×32mm | 1.5mm - 3.0mm |
| 33.4mm×33.4mm | 1.5mm - 4.0mm |
| 38mm×38mm | 1.5mm - 4.0mm |
| 40mm×40mm | 1.5mm - 4.0mm |
| 45mm×45mm | 1.5mm - 4.0mm |
| 50mm×50mm | 1.5mm - 4.0mm |
| 60mm×60mm | 1.5mm - 4.0mm |
| 75mm×75mm | 1.8mm - 4.0mm |
| Outside Diameter | Wall Thickness |
|---|---|
| 15mm×30mm | 1.5mm - 2.0mm |
| ½"×1½" | 1.5mm - 2.0mm |
| 20mm×40mm | 1.5mm - 3.0mm |
| 25mm×50mm 1"×2" | 1.5mm - 3.0mm |
| 23.5mm×53.5mm | 1.5mm - 3.0mm |
| 30mm×60mm | 1.5mm - 4.0mm |
| 40mm×80mm | 1.5mm - 4.0mm |
| 13mm×26mm | 1.5mm - 2.0mm |
| 1"×1½" | 1.5mm - 2.0mm |
| 30mm×50mm | 1.5mm - 3.0mm |
| 38mm×50mm | 1.5mm - 3.0mm |
| 40mm×60mm | 1.5mm - 4.0mm |
| 45mm×75mm | 1.5mm - 4.0mm |
| 50mm×75mm | 1.8mm - 4.0mm |
| 50mm×100mm | 1.8mm - 4.0mm |
| 25mm×75mm 1"×3" | 1.5mm - 4.0mm |
