Трубы бесшовные горячекатаные из сплава на основе титана
Трубы бесшовные горячекатаные из сплава на основе титана ГОСТ 21945-76
Стандарт распространяется на бесшовные горячекатаные трубы из сплавов на основе титана, применяемые для деталей и конструкций.
1. Сортамент.
Трубы выпускаются:
группы А – повышенной точности,
группы Б – обычной точности.
По длине трубы должны изготавливаться:
немерной длины:
при диаметре 83-325 мм – от 1,5 до 6 м,
при диаметре 351-480 мм – от 2 до 4,5 м
мерной длины – не более указанной в таблице ниже
Размеры труб должны соответствовать:
| Наружный диаметр труб, мм | Длина мерных труб, м, не более, при толщине стенки, мм | |||||||||||||
| 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | |
| 83 | 4,0 | 4,0 | 4,0 | 4,0 | 4,0 | 4,0 | 4,0 | - | - | - | - | - | - | - |
| 89 | 4,0 | 4,0 | 4,0 | 4,0 | 4,0 | 3,75 | 3,5 | 3,25 | 3,0 | - | - | - | - | - |
| 95 | 4,0 | 4,0 | 4,0 | 4,0 | 3,75 | 3,5 | 3,25 | 3,0 | 2,75 | - | - | - | - | - |
| 102 | 4,0 | 4,0 | 4,0 | 4,0 | 4,0 | 4,0 | 3,5 | 3,5 | 3,25 | 3,0 | 3,0 | 2,75 | 2,75 | 2,5 |
| 108 | 4,0 | 4,0 | 4,0 | 4,0 | 4,0 | 3,5 | 3,5 | 3,25 | 3,0 | 2,75 | 2,75 | 2,5 | 2,5 | 2,5 |
| 114 | 4,0 | 4,0 | 4,0 | 4,0 | 4,0 | 3,75 | 3,5 | 3,5 | 3,0 | 3,0 | 2,75 | 2,75 | 2,5 | 2,5 |
| 121 | 4,0 | 4,0 | 4,0 | 4,0 | 4,0 | 4,0 | 4,0 | 4,0 | 4,0 | 4,75 | 4,0 | 4,0 | 4,0 | 4,0 |
| 127 | 4,0 | 4,0 | 4,0 | 4,0 | 4,0 | 4,0 | 4,0 | 4,0 | 4,0 | 4,0 | 4,0, | 4,5 | 4,5 | 4,25 |
| 133 | 4,0 | 4,0 | 4,0 | 4,0 | 4,0 | 4,0 | 4,0 | 4,0 | 4,0 | 4,0 | 4,0 | 4,0 | 4,0 | 4,0 |
| 140 | 4,0 | 4,0 | 4,0 | 4,0 | 4,0 | 4,0 | 4,0 | 4,0 | 4,0 | 4,0 | 4,0 | 4,0 | 4,0 | 3,75 |
| 146 | - | 5,0 | 5,0 | 5,0 | 5,0 | 6,0 | 6,0 | 5,5 | 5,5 | 5,0 | 5,0 | 4,5 | 4,25 | 4,25 |
| 152 | - | 5,0 | 5,0 | 5,0 | 5,0 | 6,0 | 6,0 | 5,25 | 5,0 | 4,5 | 4,5 | 4,25 | 4,0 | 4,0 |
| 159 | - | 5,0 | 5,0 | 5,0 | 5,0 | 5,5 | 5,25 | 5,0 | 4,75 | 4,5 | 4,25 | 4,0 | 4,0 | 3,75 |
| 168 | - | - | 5,0 | 5,0 | 5,0 | 5,5 | 5,0 | 4,75 | 4,75 | 4,5 | 4,5 | 4,5 | 4,25 | 4,0 |
| 180 | - | - | 5,0 | 3,0 | 5,0 | 6,0 | 5,5 | 5,5 | 5,0 | 5,0 | 5,0 | 4,5 | 4,5 | 4,0 |
| 194 | - | - | 5,0 | 5,0 | 5,0 | 6,0 | 5,5 | 5,5 | 5,0 | 5,0 | 5,0 | 4,5 | 4,5 | 4,0 |
| 203 | - | - | - | 5,0 | 5,0 | 6,0 | 5,5 | 5,5 | 5,0 | 5,0 | 5,0 | 4,5 | 4,5 | 4,0 |
| 219 | - | - | - | 5,0 | 5,0 | 6,0 | 5,5 | 5,5 | 5,0 | 5,0 | 5,0 | 4,5 | 4,5 | 4,0 |
| 245 | - | - | - | - | 5,0 | 6,0 | 6,0 | 6,0 | 6,0 | 5,75 | 5,5 | 5,25 | 5,0 | 4,75 |
| 273 | - | - | - | - | 5,0 | 6,0 | 6,0 | 6,0 | 6,0 | 6,0 | 5,75 | 5,5 | 5,25 | 5,0 |
| 325 | - | - | - | - | - | - | 6,0 | 6,0 | 6,0 | 6,0 | 5,5 | 5,25 | 5,0 | 4,75 |
| 351 | - | - | - | - | - | - | 4,5 | 4,5 | 4,5 | 4,5 | 4,5 | 4,5 | 4,5 | 4,5 |
| 377 | - | - | - | - | - | - | 4,5 | 4,5 | 4,5 | 4,5 | 4,5 | 4,5 | 4,5 | 4,5 |
| 402 | - | - | - | - | - | - | 4,5 | 4,5 | 4,5 | 4,5 | 4,5 | 4,5 | 4,5 | 4,5 |
| 426 | - | - | - | - | - | - | - | - | - | 4,5 | 4,5 | 4,5 | 4,5 | 4,5 |
| 465 | - | - | - | - | - | - | - | - | - | - | 4,5 | 4,5 | 4,5 | 4,5 |
| 480 | - | - | - | - | - | - | - | - | - | - | - | - | - |
