API
標準:
API 5L
用途:
主要生產鋼管牌號:
GrB~X80
組距:
鋼管種類
|
外徑(D)
(mm)
|
壁厚(S)
(mm)
|
熱軋管
|
219~1200
|
8~130
|
力學性能:
標準
|
牌號
|
抗拉強度(MPa)
|
屈服強度(MPa)
|
伸長率(%)
|
API 5L
|
X52
|
360~530
|
460~760
|
見API 5L表7
|
X60
|
415~565
|
520~760
|
見API 5L表7
|
X65
|
450~600
|
535~760
|
見API 5L表7
|
X70
|
485~635
|
570~760
|
見API 5L表7
|
X80
|
555~705
|
625~825
|
見API 5L表7
|
化學成分:
標準 |
牌號 |
化學成分(%) |
|
C |
Si |
Mn |
P |
S |
V |
Nb |
Ti |
Cr |
Ni |
Cu |
Mo |
API 5L |
X52 |
≤0.18 |
≤0.45 |
≤1.50 |
≤0.025 |
≤0.015 |
≤0.05 |
≤0.05 |
≤0.04 |
|
|
|
|
X60 |
≤0.18 |
≤0.45 |
≤1.70 |
≤0.025 |
≤0.015 |
見API 5L表5 |
見API 5L表5 |
見API 5L表5 |
|
|
|
|
X65 |
≤0.18 |
≤0.45 |
≤1.70 |
≤0.025 |
≤0.015 |
見API 5L表5 |
見API 5L表5 |
見API 5L表5 |
|
|
|
|
X70 |
≤0.18 |
≤0.45 |
≤1.80 |
≤0.025 |
≤0.015 |
見API 5L表5 |
見API 5L表5 |
見API 5L表5 |
|
|
|
|
X80 |
≤0.18 |
≤0.45 |
≤1.90 |
≤0.025 |
≤0.015 |
見API 5L表5 |
見API 5L表5 |
見API 5L表5 |
|
|
|
|