管線管材質(zhì)標(biāo)準(zhǔn)用途|化學(xué)成分及力學(xué)性能
執(zhí)行標(biāo)準(zhǔn):
API SPEC 5L——美國(guó)石油學(xué)會(huì)標(biāo)準(zhǔn) GB/T9711.2——中國(guó)國(guó)家標(biāo)準(zhǔn) 用途: 用于石油、天然氣工業(yè)中的氧、水、油輸送管 主要牌號(hào): B、X42、X52、X60、X65、X70
鋼級(jí)(GB/T9711.1) |
L175(Ⅰ、Ⅱ類) |
L210 |
L245 |
L290 |
L320 |
L360 |
L390 |
L415 |
L450 |
L485 |
L555 |
鋼級(jí)(ANSI/API Spec 5L ) |
A25(Ⅰ、Ⅱ類) |
A |
B |
X42 |
X46 |
X52 |
X56 |
X60 |
X65 |
X70 |
X80 |
規(guī)定總伸長(zhǎng)應(yīng)力Rt0.5(min)Mpa |
175 |
210 |
245 |
290 |
320 |
360 |
390 |
415 |
450 |
485 |
555 |
抗拉強(qiáng)度(min)Mpa |
315 |
335 |
415 |
415 |
435 |
460 |
490 |
520 |
535 |
570 |
625 |
尺寸公差:
鋼管種類 |
鋼管外徑(D) |
鋼管壁厚(S) |
管體 |
鋼管外徑(mm) |
允許偏差(mm) |
鋼管外徑(mm) |
允許偏差(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 |
化學(xué)成分:
標(biāo)準(zhǔn) |
牌號(hào) |
化學(xué)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(xié)議 |
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 |
力學(xué)性能:
標(biāo)準(zhǔn) |
牌號(hào) |
抗拉強(qiáng)度(MPa) |
屈服強(qiáng)度(MPa) |
屈強(qiáng)比 |
伸長(zhǎng)率(%) |
0℃沖擊功Akv(J) |
熱處理狀態(tài) |
API SPEC 5L
GB/T9711.2 |
B |
≥415 |
245~440 |
≤0.80 |
22 |
≥40 |
正火 |
X42 |
≥415 |
290~440 |
≤0.80 |
21 |
≥40 |
正火 |
X52 |
≥460 |
360~510 |
≤0.85 |
20 |
≥40 |
正火 |
X60 |
≥520 |
415~565 |
≤0.85 |
18 |
≥40 |
正火 |
X65 |
≥535 |
450~570 |
≤0.90 |
18 |
≥40 |
淬火+回火 |
X70 |
≥570 |
485~605 |
≤0.90 |
18 |
≥40 |
淬火+回火 |
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