Local producer
Standards: JIS G 3444
JP · STKR · Hollow sections
Square & rectangular tubes STKR
Carbon steel square and rectangular tubes for general structural purposes to JIS G 3466.
Tick sections to compare. Values in the units shown in each column header.
| Select to compare | Designation | dmm | bmm | tmm | Masskg/m | Amm² | Ix10⁶ mm⁴ | Zx10³ mm³ | Sx10³ mm³ | rxmm | Data |
|---|---|---|---|---|---|---|---|---|---|---|---|
| STKR 300x300x12 | 300.0 | 300.0 | 12.0 | 104.63 | 13,328 | 180.515 | 1,203.4 | 1,420.2 | 116.4 | U | |
| STKR 250x250x9 | 250.0 | 250.0 | 9.0 | 65.92 | 8,397 | 79.827 | 638.6 | 749.9 | 97.5 | U | |
| STKR 200x200x9 | 200.0 | 200.0 | 9.0 | 51.79 | 6,597 | 39.178 | 391.8 | 465.3 | 77.1 | U | |
| STKR 200x100x6 | 200.0 | 100.0 | 6.0 | 26.16 | 3,332 | 16.719 | 167.2 | 210.1 | 70.8 | U | |
| STKR 150x150x6 | 150.0 | 150.0 | 6.0 | 26.16 | 3,332 | 11.282 | 150.4 | 177.5 | 58.2 | U | |
| STKR 150x100x4.5 | 150.0 | 100.0 | 4.5 | 16.48 | 2,099 | 6.481 | 86.4 | 105.0 | 55.6 | U | |
| STKR 125x125x6 | 125.0 | 125.0 | 6.0 | 21.45 | 2,732 | 6.286 | 100.6 | 119.9 | 48.0 | U | |
| STKR 100x100x4.5 | 100.0 | 100.0 | 4.5 | 12.95 | 1,649 | 2.449 | 49.0 | 58.2 | 38.5 | U | |
| STKR 100x100x3.2 | 100.0 | 100.0 | 3.2 | 9.45 | 1,204 | 1.850 | 37.0 | 43.2 | 39.2 | U |
V Verified · C Calculated · U Unverified · D Deprecated – what this means
Where to buy
Producers of Hollow sections & pipes – local mills first. Buy direct from the mill for large tonnages, or through a steel distributor / stockist for small quantities and cut lengths.
Local producer
Standards: JIS G 3444, JIS G 3466
International producer
Standards: EN 10210, EN 10219
International producer
Standards: GB/T 8162, GB/T 8163
International producer
Standards: ASTM A500, ASTM A1085
International producer
Standards: AS/NZS 1163
Buying checklist
- Specify the section designation, product standard and steel grade exactly (e.g. "STKR 300x300x12 – JIS G 3466").
- Ask for mill test certificates (EN 10204 type 3.1 or equivalent) traceable to the heat number.
- Sections from another standard system are not automatically equivalent – have the engineer approve any substitution.
- Check availability, minimum order quantity, stock lengths, lead time and delivery terms with the mill or distributor.
All producers of this product type →
Listing is informational only – not an endorsement, offer or confirmation of availability. Company details are marked UNVERIFIED until checked.