l245螺旋鋼管,好螺旋鋼管,焊接螺旋鋼管,
鋼管種類 |
外徑(D/ mm) |
壁厚(S/ mm) | ||
熱軋管 |
鋼管外徑 |
允許偏差 |
鋼管壁厚 |
允許偏差 |
φ559 |
±1.0% |
17.0 |
-0%,+25 |
標準 |
牌號 |
抗拉強度(MPa) |
屈服強度(MPa) |
屈強比 |
伸長率(%) |
沖擊功Akv(J) |
硬度 |
Q/321088HGB3 |
4130X |
725-865 |
485-735 |
≤0.85 |
≥20 |
-40℃≥40 |
195-269HB |
標準 |
牌號 |
化學成分(%) | |||||||||
C |
Si |
Mn |
P |
S |
Cr |
Ni |
Cu |
Mo |
V | ||
Q/321088HGB3 |
4130X |
0.25-0.35 |
0.15-0.35 |
0.40-0.90 |
≤0.020 |
≤0.010 |
0.80-1.10 |
≤0.25 |
≤0.20 |
0.15-0.25 |
≤0.08 |
60×3.5 |
159×6 |
219×7 |
63.5×3.5 |
168×5.5 |
273×8 |
89×4 |
180×6 |
245×7 |
121×5.5 |
194×6 |
299×7 |
140×5 |
203×7 |
325×7 |
194*20 |
219*18 |
245*12-14-30-38-42-45 |
273*14-16 |
299*28-38-40 |
325*14-16-18-36-38-40 |
351*25-26-30-32-35-42 |
377*24-26-30-32-36-38-40-42 |
402*18-20-22-24-26-37-38-40-42 |
406*30-32-38-40 |
426*38-40-42-45 |
194*20 |
325*14 |
377*26 |
402*37 |
219*18 |
325*16 |
377*30 |
402*38 |
245*12 |
325*18 |
377*32 |
402*40 |
245*14 |
325*36 |
377*36 |
402*42 |
245*30 |
325*38 |
377*38 |
406*30 |
245*38 |
325*40 |
377*40 |
406*32 |
245*42 |
351*25 |
377*42 |
406*38 |
245*45 |
351*26 |
402*18 |
406*40 |
273*14 |
351*30 |
402*20 |
426*38 |
273*16 |
351*32 |
402*22 |
426*40 |
299*28 |
351*35 |
402*24 |
426*42 |
299*38 |
325*42 |
402*26 |
426*45 |
299*40 |
377*24 |
|
|
168*17 |
245*8-12-14-16-25-30-40-44 |
273*30 |
299*31-32 |
325*40 |
351*30 |
377*30 |
168*17 |
245*44 |
245*8 |
273*30 |
245*12 |
299*31 |
245*14 |
299*32 |
245*16 |
325*40 |
245*25 |
351*30 |
245*30 |
377*30 |
245*40 |
|
20# |
194*20 |
325*38 |
402*20 |
45# |
168*17 |
Q345B |
168*14 |
|
219*18 |
325*40 |
402*22 |
|
245*8 |
Q345B |
402*11 |
|
245*12 |
351*25 |
402*24 |
|
245*12 |
Q345C |
194*8 |
|
245*14 |
351*26 |
402*26 |
|
245*14 |
Q345C |
402*13 |
|
245*30 |
351*30 |
402*37 |
|
245*16 |
Q345D |
325*11 |
|
245*38 |
351*32 |
402*38 |
|
245*25 |
|
|
|
245*42 |
351*35 |
402*40 |
|
245*30 |
|
|
|
245*45 |
351*42 |
402*42 |
|
245*40 |
|
|
|
273*14 |
377*24 |
406*30 |
|
245*44 |
|
|
|
273*16 |
377*26 |
406*32 |
|
273*30 |
|
|
|
299*28 |
377*30 |
406*38 |
|
299*31 |
|
|
|
299*38 |
377*32 |
406*40 |
|
299*32 |
|
|
|
299*40 |
377*36 |
426*38 |
|
325*40 |
|
|
|
325*14 |
377*38 |
426*40 |
|
351*30 |
|
|
|
325*16 |
377*40 |
426*42 |
|
377*30 |
|
|
|
325*18 |
377*42 |
426*45 |
|
|
|
|
|
325*36 |
402*18 |
|
|
|
|
|