無錫GB9948石油裂化管377*28尺寸公差\15crmo厚壁無縫管
GB9948石油裂化管
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尺寸公差
鋼管種類 |
外徑(D) |
鋼管壁厚(S) |
||
冷拔管 |
鋼管外徑(mm) |
允許偏差(mm) |
鋼管壁厚 (mm) |
允許偏差(mm) |
>30~50 |
±0.3 |
≤30 |
±10% |
|
>50~219 |
±0.8% |
|||
熱軋管 |
>219 |
±1.0% |
>20 |
±10% |
標(biāo)準(zhǔn) |
牌號(hào) |
抗拉強(qiáng)度(MPa) |
屈服強(qiáng)度(MPa) |
伸長率(%) |
沖擊功(J) |
布氏硬度(HB) |
交貨狀態(tài) |
GB9948 |
10 |
330~490 |
≥205 |
≥24 |
/ |
/ |
正火 |
20 |
410~550 |
≥245 |
≥21 |
≥39 |
/ |
正火 |
|
15CrMo |
440~640 |
≥235 |
≥21 |
≥47 |
≤170 |
正火加回火 |
|
1Cr2Mo |
≥390 |
≥175 |
≥22 |
≥92 |
≤179 |
正火加回火 |
|
1Cr5Mo |
≥390 |
≥195 |
≥22 |
≥92 |
≤187 |
退火 |
規(guī)格 |
數(shù)量 |
規(guī)格 |
數(shù)量 |
規(guī)格 |
數(shù)量 |
12×1.5 |
18 |
73×4-4.5-5-6-7-8-9-10-12-15 |
50 |
219×30-40 |
65 |
14×1.5-2.5-3 |
20 |
76×4-4.5-5-6-7-8-9-10-12-14 |
60 |
245×8-10-14-17-20-22 |
105 |
16×1.5-2.5-4 |
30 |
83×4.5-5-10-12-14-16-18-20 |
30 |
245×25-28-30-34-40 |
84 |
18×2.3-4-5 |
20 |
89×4.5-8-10-12-14-16-18-20 |
40 |
273×7-9-12-15-18-20-25 |
100 |
20×2.5-3-5 |
17 |
95×4.5-6-8-10-12-14-16-20 |
50 |
273×30-35-38-40 |
50 |
24×2.5-3-4-5-6 |
25 |
102×4.5-5-6-7-8-10-12-14-16-20 |
80 |
299×8-12-16-20-24-28 |
60 |
25×2.5-3-4-5-6 |
28 |
108×4.5-5-6-7-8-10-12-14-18-20-22 |
75 |
299×30-32-36-38-40 |
70 |
28×3-3.5-4-5-6 |
30 |
114×4.5-5-6-7-8-10-12-14-18-20 |
100 |
325×8-12-14-18-38 |
120 |
32×3.5-4-5-6-8 |
40 |
121×4.5-5-6-7-8-10-12-14-16-20 |
102 |
325×28-32-34-38 |
75 |
34×4-5-6-8 |
35 |
127×4.5-5-6-7-8-10-12-14-16-20 |
95 |
351×10-16-20-25-40 |
120 |
36×3.5-5-6-8 |
30 |
133×4.5-6-8-12-14-16-18-20-25-30 |
120 |
355×6-18-20-25-30-40 |
45 |
38×4-5-6-7-8-9-10 |
33 |
140×5-6-7-8-9-10-12-14-16-20-22 |
50 |
377×8-12-15-20-24-28 |
128 |
39×3.5-5-8-10 |
30 |
146×4.5-6-8-12-14-16-18-20-25-30 |
60 |
377×30-37-40 |
60 |
42×3.5-4-5-6-7-8-9-10 |
35 |
152×4.5-6-8-12-14-16-18-20-25-30 |
60 |
402×10-15-20-25-30-35 |