ERW Steel Pipe JIS G3444
For foundation steel piles, this standard only applies to welded steel pipes with an outer diameter less than 318.5mm; for anti-landslide steel piles, this standard only applies to seamless steel pipes and welded steel pipes with an outer diameter less than 318.5mm. The applicable size range of this standard is usually 21.7 to 1016.0mm in outer diameter.
| Commodity | JIS G 3444 ERW Structural Steel Pipe | ||||
| Outer diameter | ERW / HFW | LSAW / DSAW | SSAW / HSAW | RHS | SHS |
| 1/8 - 20 inch (10.3 - 508 mm) |
12 - 56 inch (323.8 - 1,420 mm) |
8 - 126 inch (219.1 - 3,200 mm) |
40 x 20 mm - 1,000 x 800 mm |
15 x 15 mm - 1,000 × 1,000 mm |
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| Wall thickness | 0.4 - 16 mm | 6.0 - 40 mm | 6.0 - 26 mm | 1.0 - 30 mm | 0.6 - 30 mm |
| Length | 5.8 ~ 12.0 m or upon customers' requirements | ||||
| Standard | GB/T 3091, GB/T 13793, ASTM A252, ASTM A53, ASTM A500, EN 10210, EN 10219, API 5L, DIN 1626/1615, DIN 17120, etc. | ||||
| Grade | SS400, Q235, Q345, Q460, A572 Gr.50, Gr.1/Gr.2/Gr.3, S235, S275, S355, Grade A/B, X42, X52, X60, X70, etc. | ||||
| Surface | Prime quality (bared, oiled, color paint, 3LPE, or other anti-corrosive treatment) | ||||
| Inspection | With Chemical Composition and Mechanical Properties Analysis; Dimensional and Visual Inspection, also with Nondestructive Inspection. |
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| Application | structure, electric power transmission tower projects, piling, water, oil & gas pipeline engineering, mechanical industry, municipal projects, roads and its auxiliary facilities, etc. | ||||
| Packing | Standard export, in bulk / bundles / nylon fabric bags with seaworthy packing; or according to customers' requestments. |
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| Delivery Time | 1. 20-45 days after received deposit or confirmed L/C 2. Depends on your order quantity |
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| Payment Terms | 1. T/T: 30% T/T advance, 70% balance copy of B/L 2. L/C: at sight 3. T/T and L/C: 30% T/T advance, 70% L/C |
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| Port | China main port | ||||
Chemical Composition Of Jis G3444
| Symbol of Grade | C | Si | Mn | P | S |
| JIS G3444 STK 290 | – | – | – | 0.050max. | 0.050max. |
| JIS G3444 STK 400 | 0.25max. | – | – | 0.040max. | 0.040max. |
| JIS G3444 STK 490 | 0.18max. | 0.55max. | 1.65max. | 0.035max. | 0.035max. |
| JIS G3444 STK 500 | 0.24max. | 0.35max. | 0.30 to 1.30 | 0.040max. | 0.040max. |
| JIS G3444 STK 540 | 0.23max. | 0.55max. | 1.50max. | 0.040max. | 0.040max. |
| Notes: 1. If necessary, other alloy elements than those given in this table may be added. 2. For STK540, the chemical composition of tubes of wall thickness over 12.5 mm may be agreed upon between the purchaser and the manufacturer. |
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Mechanical Properties Of Jis G3444
| Symbol of Grade |
Tensile Strength N/mm2 |
Yield Point or Proof Stress N/mm2 |
Weld Tensile N/mm2 |
Flattening Resistance Strength | Bendability | |
| Distance between Flat Plates (H) | Bending Angle, a) | Inside Radius | ||||
| Applicable Outside Diameter | ||||||
| All Outside Diameters | All Outside Diameters | All Outside Diameters | All Outside Diameters | 50 mm or under | ||
| JIS G3444 STK 290 | 290 min. | – | 290 min. | 2/3D | 90° | 6D |
| JIS G3444 STK 400 | 400 min. | 235 min. | 400 min. | 2/3D | 90° | 6D |
| JIS G3444 STK 490 | 490 min. | 315 min. | 490 min. | 7/8D | 90° | 6D |
| JIS G3444 STK 500 | 500 min. | 355 min. | 500 min. | 7/8D | 90° | 6D |
| JIS G3444 STK 540 | 540 min. | 390 min. | 540 min. | 7/8D | 90° | 6D |
| NOTE 1 In this table, D stands for the outside diameter of the tube. NOTE 2 1 N/mm 2 = 1 MPa Note a) The bending angle shall be measured from the starting point of the bend. |
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JIS G3444 ERW Pipe
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