山東鋼管廠家管線用無縫鋼管規(guī)定總伸長應力
執(zhí)行標準:
API SPEC 5L——美國石油學會標準
GB/T9711.2——中國國家標準
用途:
用于石油、天然氣工業(yè)中的氧、水、油輸送管
主要牌號:
B、X42、X52、X60、X65、X70
鋼級(GB/T9711.1) |
L175(Ⅰ、Ⅱ類) |
L210 |
L245 |
L290 |
L320 |
L360 |
L390 |
L415 |
L450 |
L485 |
L555 |
鋼級(ANSI/API Spec 5L ) |
A25(Ⅰ、Ⅱ類) |
A |
B |
X42 |
X46 |
X52 |
X56 |
X60 |
X65 |
X70 |
X80 |
規(guī)定總伸長應力Rt0.5(min)Mpa |
175 |
210 |
245 |
290 |
320 |
360 |
390 |
415 |
450 |
485 |
555 |
抗拉強度(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 |
|