Carbon steel pipe for machine structure
This is the product introduction of KUMSUNG E&E
Carbon steel pipe for machine structure (STKM11A ~ 20A -KS D 3517)
Carbon steel pipes used in civil engineering, construction, steel towers, scaffolds, supports, ground anti-slip piles, and other structures.
| type | sign | Tensile test | ||||
|---|---|---|---|---|---|---|
| tensile strength kg/㎟ (MIN) | yield point kg/㎟ (MIN) | elongation(%) (MIN) | ||||
| No. 11 test piece No. 12 test piece increase direction | No. 5 test piece transverse | |||||
| 11 types | A | STKM11A | 30 types | – | 35 types | 30 types |
| 12종 | A | STKM12A | 35 types | 18 types | 35 types | 30 types |
| B | STKM12B | 40 types | 28 types | 25 types | 20 types | |
| C | STKM12C | 48 types | 36 types | 20 types | 15 types | |
| 13종 | A | STKM13A | 38 types | 22 types | 30 types | 25 types |
| B | STKM13B | 45 types | 31 types | 20 types | 15 types | |
| C | STKM13C | 52 types | 39 types | 15 types | 10 types | |
| 14types | A | STKM14A | 42 types | 25 types | 25 types | 20 types |
| B | STKM14B | 51 types | 36 types | 15 types | 10 types | |
| C | STKM14C | 56 types | 42 types | 15 types | 10 types | |
| 15types | A | STKM15A | 48 types | 28 types | 22 types | 17 types |
| C | STKM15C | 59 types | 44 types | 12 types | 7 types | |
| 16types | A | STKM16A | 52 types | 33 types | 20 types | 15 types |
| C | STKM16C | 63 types | 47 types | 12 types | 7 types | |
| 17types | A | STKM17A | 56 types | 35 types | 20 types | 15 types |
| C | STKM17C | 66 types | 49 types | 10 types | 5 types | |
| 18종 | A | STKM18A | 45 types | 28 types | 25 types | 20 types |
| B | STKM18B | 50 types | 32 types | 23types | 18types | |
| C | STKM18C | 52 types | 39 types | 15 types | 10 types | |
| 19종 | A | STKM19A | 50 types | 32 types | 23 types | 18 types |
| C | STKM19C | 56 types | 42 types | 15 types | 10 types | |
| 20종 | A | STKM20A | 55 types | 40 types | 23 types | 18 types |