标准:
API SPEC 5L——美国石油学会标准
GB/T9711——中国国家标准
用途:
用于石油、天然气工业中的氧、水、油输送管
主要生产钢管牌号:
B、X42、X52、X60、X65、X70 L245 L290 L320 L360 L390 L450 L485
尺寸公差:
钢管种类 |
钢管外径(D) |
钢管壁厚(S) |
||
管体 |
钢管外径 (mm) |
允许偏差(mm) |
钢管外径(mm) |
允许偏差(mm) |
≥60.3且S<20 |
±0.75% |
≤73.0 |
15%,-12.5% |
|
≥60.3且S≥20 |
±1.00% |
>73.0且S<20 |
15%,-12.5% |
|
>73.0且S≥20 |
17.5%,-10 |
力学性能:
标准 |
牌号 |
抗拉强度(MPa) |
屈服强度(MPa) |
屈强比 |
伸长率(%) |
0℃冲击功 Akv(J) |
热处理状态 |
API SPEC 5L GB/T9711 |
L245/B |
≥415 |
245~440 |
≤0.80 |
22 |
≥40 |
正火 |
API SPEC 5L GB/T9711 |
L290/X42 |
≥415 |
290~440 |
≤0.80 |
21 |
≥40 |
正火 |
API SPEC 5L GB/T9711 |
L360/X52 |
≥460 |
360~510 |
≤0.85 |
20 |
≥40 |
正火 |
API SPEC 5L GB/T9711 |
L415/X60 |
≥520 |
415~565 |
≤0.85 |
18 |
≥40 |
正火 |
API SPEC 5L GB/T9711 |
L450/X65 |
≥535 |
450~570 |
≤0.90 |
18 |
≥40 |
淬火 回火 |
API SPEC 5L GB/T9711 |
L485/X70 |
≥570 |
485~605 |
≤0.90 |
18 |
≥40 |
淬火 回火 |
化学成分:
标准 |
牌号 |
化学成分(%) |
CEV(%) |
|||||||
C |
Si |
Mn |
P |
S |
V |
Nb |
Ti |
|||
API SPEC 5L GB/T9711.2 |
B |
≤0.16 |
≤0.40 |
≤1.10 |
≤0.020 |
≤0.010 |
- |
- |
- |
≤0.42 |
X42 |
≤0.17 |
≤0.40 |
≤1.20 |
≤0.020 |
≤0.010 |
≤0.05 |
≤0.05 |
≤0.04 |
≤0.42 |
|
X52 |
≤0.20 |
≤0.45 |
≤1.60 |
≤0.020 |
≤0.010 |
≤0.10 |
≤0.05 |
≤0.04 |
≤0.45 |
|
X60 |
≤0.21 |
≤0.45 |
≤1.60 |
≤0.020 |
≤0.010 |
≤0.15 |
≤0.05 |
≤0.04 |
协议 |
|
X65 |
≤0.16 |
≤0.45 |
≤1.60 |
≤0.020 |
≤0.010 |
≤0.06 |
≤0.05 |
≤0.06 |
≤0.45 |
|
X70 |
≤0.16 |
≤0.45 |
≤1.70 |
≤0.020 |
≤0.010 |
≤0.06 |
≤0.05 |
≤0.06 |
≤0.45 |
注:
1.0.015%≤Altot<0.06%;N≤0.012%;Al/N≥2/1;Cu≤0.25%;Ni≤0.30%;Cr≤0.30%;Mo≤0.10%
2.V Nb Ti≤0.15
3.X60、X65、X70经协商Mo≤0.35%
美国石油学会标准(API SPEC 5L )管线管规格表
名义尺寸 Nominal Size |
外径 Outside Diameter |
壁厚 Wall Thickness |
平端管米重 Plain-end Weight |
|||
inch |
mm |
inch |
mm |
lb/ft |
kg/m |
|
0.405 |
0.405 |
10.29 |
0.095 |
2.4 |
0.31 |
0.47 |
0.54 |
0.54 |
13.72 |
0.088 |
2.2 |
0.43 |
0.62 |
0.54 |
13.72 |
0.119 |
3.0 |
0.54 |
0.79 |
|
0.675 |
0.675 |
17.15 |
0.091 |
2.3 |
0.57 |
0.84 |
0.675 |
17.15 |
0.126 |
3.2 |
0.74 |
1.10 |
|
0.84 |
0.84 |
21.34 |
0.109 |
2.8 |
0.85 |
1.28 |
0.84 |
21.34 |
0.147 |
3.7 |
1.09 |
1.61 |
|
1.05 |
1.05 |
26.67 |
0.113 |
2.9 |
1.13 |
1.70 |
1.05 |
26.67 |
0.154 |
3.9 |
1.48 |
2.19 |
|
1.315 |
1.315 |
33.4 |
0.133 |
3.4 |
1.68 |
2.52 |
1.315 |
33.4 |
0.179 |
4.6 |
2.17 |
3.21 |
|
1.660 |
1.660 |
42.2 |
0.145 |
3.7 |
2.72 |
3.43 |
1.660 |
42.2 |
0.191 |
4.9 |
3.00 |
4.51 |
|
1.900 |
1.660 |
42.2 |
0.382 |
9.7 |
5.22 |
7.77 |
1.900 |
48.3 |
0.145 |
3.7 |
2.72 |
4.07 |
|
1.900 |
48.3 |
0.200 |
5.1 |
3.63 |
5.43 |
|
1.900 |
48.3 |
0.400 |
10.2 |
6.41 |
9.58 |
|
2 3/8 |
2.375 |
60.3 |
0.109 |
2.8 |
2.64 |
3.97 |
2.375 |
60.3 |
0.125 |
3.2 |
3.00 |
4.51 |
|
2.375 |
60.3 |
0.141 |
3.6 |
6.36 |
5.03 |