名 称
|
数 据
|
外径和壁厚 |
应符合GB/T17395《无缝钢管》的规定
|
长 度 |
1.热轧(挤压、扩)钢管为3-12m
2.冷拔(轧)钢管为3-10.5m
|
弯曲度 |
1.壁厚≤15mm时不得大于1.5mm/m
2.壁厚>15mm时不得大于2.0mm/m
3.外径≥351mm时不得大于3.0mm/m
|
钢管种类
|
钢管尺寸
|
允许偏差
|
||
普通级
|
高 级
|
|||
热轧(挤压、扩)管
|
外径D
|
全部
|
±1%(最小±0.50)
|
|
壁厚S
|
全部
|
+15% 小+0.45
-12.5% -0.40
|
|
|
冷拔(轧)管
|
外径D
|
6-10
|
±0.20
|
±0.15
|
>10-30
|
±0.40
|
±0.20
|
||
>30-50
|
±0.45
|
±0.30
|
||
|
|
|
||
>50
|
±1%
|
±0.8%
|
||
壁厚s
|
≤1
|
±0.15
|
±0.12
|
|
>1-3
|
+15%
-10%
|
+12.5%
-10%
|
||
>3
|
+12.5%
-10%
|
±10%
|
牌 号
|
抗拉强度ób/Mpa
|
屈服点ós/MPa
|
断后伸长率δ5(%)
|
|
S≤16
|
S>16
|
|||
≥
|
||||
10
|
335-475
|
205
|
195
|
24
|
20
|
410-550
|
245
|
235
|
20
|
Q295
|
430-610
|
295
|
285
|
22
|
Q345
|
490-665
|
325
|
315
|
21
|
流体管
|
||
规格
|
规格
|
规格
|
12×1 | 89×4.5-8-10-12-14-16-18-20 | 245×25-28-30-34-40 |
14×1.5-2.5-3 | 95×4.5-6-8-10-12-14-16-20 | 273×7-9-12-15-18-20-25 |
16×1.5-2.5-4 | 102×4.5-5-6-7-8-10-12-14-16-20 | 273×30-35-38-40-45-50 |
18×2.3-4-5 | 108×4.5-5-6-7-8-10-12-14-18-20-22 | 299×8-12-16-20-24-28 |
20×2.5-3-5 | 114×4.5-5-6-7-8-10-12-14-18-20 | 299×30-32-36-38-40-45 |
24×2.5-3-4-5-6 | 121×4.5-5-6-7-8-10-12-14-16-20 | 325×8-12-14-18-38-42 |
25×2.5-3-4-5-6 | 127×4.5-5-6-7-8-10-12-14-16-20 | 325×28-32-34-38-42 |
28×3-3.5-4-5-6 | 133×4.5-6-8-12-14-16-18-20-25-30 | 351×10-16-20-25-40 |
32×3.5-4-5-6-8 | 140×5-6-7-8-9-10-12-14-16-20-22 | 355×6-18-20-25-30-40/52 |
34×4-5-6-8 | 146×4.5-6-8-12-14-16-18-20-25-30 | 377×8-12-15-20-24-28 |
36×3.5-5-6-8 | 152×4.5-6-8-12-14-16-18-20-25-30 | 377×30-37-40-45-50 |
38×4-5-6-7-8-9-10 | 159×4.5-6-10-12-14 | 402×10-15-20-25-30-35 |
39×3.5-5-8-10 | 159×16-18-20-22-25-30 | 406×10-20-25-28-35-40 |
42×3.5-4-5-6-7-8-9-10 | 168×8-10-12-14-20-25-30-35 | 426×10-12-14-16-20-25-30-35-40 |
45×3.5-4-5-6-7-8-9 | 180×8-12-16-25-30 | 450×10-12-14-16-20-25-34-40-50 |
48×3.5-4-5-6-7-8-9-10 | 180×32-34-38-40-45-50 | 480×10-12-14-16-18-20-25-30-40 |
51×3.5-4-5-6-7-8-9-10 | 194×6-8-12-16-20-25-30-40-45-50 | 500×10-12-14-16-20-25-34-40-50 |
56×3.5-4-5-6-7-8-9-10 | 203×6-7-10-15-20-25-30 | 510×10-12-14-16-20-25-34-40-50 |
57×3.5-5-6-7-8-9-10-12 | 203×32-36-40-45-50 | 530×10-12-14-16-18-20-30-40 |
60×3.5-4.5-5-6-7-8-9-12-14 | 219×6-8-12-16-18-20-25 | 560×10-14-16-20-25-30-40-50-60 |
63×3.5-4.5-5-6-7-8-9-10-12-14 | 219×30-40-45-50-55 | 580×10-14-16-20-30-40-50-70 |
68×4-4.5-5-6-7-8-9-10-12-14-16 | 219×55-58-60-65-70 | 600×10-14-18-25-20-30-50-60 |
70×4-4.5-5-6-7-8-9-10-12-15-16 | 245×8-10-14-17-20-22 | 610×10-14-18-25-20-30-50-60 |
73×4-4.5-5-6-7-8-9-10-12-15 | 245×25-28-30-34-40 | 620×14-20-30-35-45-50-60 |
76×4-4.5-5-6-7-8-9-10-12-14 | 273×7-9-12-15-18-20-25 | 630×10-20-30-40-55-75 |