L485NB管線管是用於石油、天然氣工業中的氧、水、油輸送管的管道。
簡介,用途,標準,
簡介
L485管線管相當於X70管線管
用途
用於石油、天然氣工業中的氧、水、油輸送管
化學成分:
標準
牌號
化學成分(%)
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
協定
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
註:
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經協商Mo≤0.35%