square high-frequency electric welding steel pip
square high-frequency electric welding steel pip
| 2、square high-frequency electric welding steel pipe |
GB6727－86 |
| GB6728－86 |
| 12.7×12.7×0.8～1.5 |
30×30×l～3.5 |
45×45×l.2～3.5 |
| 16×16×0.8～1.5 |
32×32×1～1.5 |
50×50×1.5～5 |
| 19×19×0.8～l.5 |
35×35×l～3.5 |
60×60×1.5～5 |
| 20×20×0.8～1.5 |
38×38×1.2～2.5 |
70×70×1.5～5 |
| 21.4×21.4×0.8～1.5 |
40×40×1.2～5 |
80×80×1.5～5 |
| 25×25×l～2.5 |
44×44×1.2～2.5 |
100×100×1.5～5 |
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