公稱外徑/mm |
公稱壁厚/mm | ||||||||
1.5 |
2.0 |
2.5 |
3.0 |
3.5 |
4.O |
4.5 |
5.0 |
6.O | |
理論質(zhì)量/(kg/m) | |||||||||
10 |
0.314 |
0.395 |
0.462 |
|
|
|
|
|
|
12 |
O.388 |
0.493 |
O.586 |
|
|
|
|
|
|
14 |
|
0.592 |
O.709 |
0.814 |
|
|
|
|
|
16 |
|
O.69l |
0.832 |
O.962 |
|
|
|
|
|
17 |
|
0.740 |
0.894 |
1.04 |
|
|
|
|
|
18 |
|
0.789 |
0.956 |
1.11 |
|
|
|
|
|
19 |
|
O.838 |
1.02 |
1.18 |
|
|
|
|
|
20 |
|
0.888 |
1.08 |
1.26 |
|
|
|
|
|
22 |
|
0.986 |
1.20 |
1.4l |
1.60 |
1.78 |
|
|
|
公稱外徑/mm |
公稱壁厚/mm | ||||||||
1.5 |
2.0 |
2.5 |
3.0 |
3.5 |
4.O |
4.5 |
5.0 |
6.O | |
理論質(zhì)量/(kg/m) | |||||||||
25 |
|
1.13 |
1.39 |
1.63 |
1.86 |
2.07 |
|
|
|
30 |
|
1.38 |
1.70 |
2.00 |
2.29 |
2.56 |
|
|
|
32 |
|
|
1.82 |
2.15 |
2.46 |
2.76 |
|
|
|
35 |
|
|
2.00 |
2.37 |
2.72 |
3.06 |
|
|
|
38 |
|
|
2.19 |
2.59 |
2.98 |
3.35 |
|
|
|
40 |
|
|
2.31 |
2.74 |
3.15 |
3.55 |
|
|
|
42 |
|
|
2.44 |
2.89 |
3.32 |
3.75 |
4.16 |
4.56 |
|
45 |
|
|
2.62 |
3.11 |
3.58 |
4.04 |
4.49 |
4.93 |
|
48 |
|
|
2.81 |
3.33 |
3.84 |
4.34 |
4.83 |
5.30 |
|
5l |
|
|
2.99 |
3.55 |
4.10 |
4.64 |
5.16 |
5.67 |
|
57 |
|
|
|
4.00 |
4.62 |
5.23 |
5.83 |
6.41 |
|
60 |
|
|
|
4.22 |
4.88 |
5.52 |
6.16 |
6.78 |
|
63.5 |
|
|
|
4.44 |
5.14 |
5.82 |
6.49 |
7.15 |
|
70 |
|
|
|
4.96 |
5.74 |
6.51 |
7.27 |
8.01 |
9.47 |
76 |
|
|
|
|
6.26 |
7.10 |
7.93 |
8.75 |
10.36 |
83 |
|
|
|
|
6.86 |
7.79 |
8.71 |
9.62 |
11.39 |
89 |
|
|
|
|
|
8.38 |
9.38 |
10.36 |
12.38 |
102 |
|
|
|
|
|
9.67 |
lO.82 |
11.96 |
14.2l |
108 |
|
|
|
|
|
10.26 |
11.49 |
12.70 |
15.09 |
114 |
|
|
|
|
|
10.85 |
12.12 |
13.4.4 |
15.98 |
外 徑 |
外徑允許偏差 | |
電焊鋼管 |
冷拔電焊鋼管 | |
<25 |
±0.15 |
±0.10 |
≥25~<40 |
±0.20 |
±O.15 |
≥40~<50 |
±O.25 |
±O.20 |
≥50~<60 |
±O.30 |
±0.25 |
≥60~<80 |
±O.40 |
±O.30 |
≥80~<100 |
+0.40
-O.60 |
±0.40 |
≥100~<114 |
+0.40
-O.80 |
+O.40
-0.60 |
壁 厚/mm |
壁厚允許偏差 | |
普通級 |
高級 | |
1.5~3.O |
±10% |
+O.3mm
O |
>3.O |
±lO% |
+18%
O |
類 別 |
鋼管全長允許偏差 | |
外 徑 |
長 度 | |
≤50 |
≤7000 |
+6
0 |
>7000 |
+15
O | |
>50 |
≤7000 |
+8
O |
>7000 |
+15
O |
牌號 |
化學成分(質(zhì)量分數(shù))(%) | |||||||
C |
Mn |
Si |
P |
S |
殘余元素 | |||
Ni |
Cr |
Cu | ||||||
10 |
0.07~O.14 |
0.35~O.65 |
0.17~O.37 |
≤O.035 |
≤0.035 |
≤O.25 |
≤O.15 |
≤0.25 |
20 |
0.17~O.24 |
O.35~0.65 |
0.17~0.37 |
≤O.035 |
≤O.035 |
≤0.25 |
≤O.25 |
≤0.25 |
牌 號 |
熱處理 | |
電焊鋼管(I) |
冷拔電焊鋼管(Ⅱ) | |
10
20 |
無氧化正火 |
1.無氧化正火;
2.在冷拔前經(jīng)過正火處理的鋼管可進行退火處理 |
牌 號 |
抗拉強度ób/MPa |
屈服點ós/MPa |
斷后伸長率δ5(%) |
lO |
335~475 |
≥195 |
≥28 |
20 |
410~550 |
≥245 |
≥24 |
牌 號 |
試樣狀態(tài) |
溫度/°C | |||||
屈服強度ópo.2/MPa | |||||||
200 |
250 |
300 |
350 |
400 |
450 | ||
10 |
供貨狀態(tài) |
165 |
145 |
122 |
111 |
109 |
107 |
20 |
188 |
170 |
149 |
137 |
134 |
132 |
|