小倍數彎頭 管線鋼彎管 規格406*10 R1D X42
小倍數彎頭 管線鋼彎管 規格406*10 R1D X42
管線管化學元素表：
roduct Level | Steel grade | Chemical composition, % | ||||||||
C | Mn | P | S | Si | V | Nb | Ti | CEpcm | ||
PSL 1 | B or L245 | ≤0.28 | ≤1.20 | ≤0.030 | ≤0.030 | - | - | - | - | - |
x42 or L290 | ≤0.28 | ≤1.30 | ≤0.030 | ≤0.030 | - | - | - | - | - | |
X46 or L320 | ≤0.28 | ≤1.40 | ≤0.030 | ≤0.030 | - | - | - | - | - | |
X52 or L360 | ≤0.28 | ≤1.40 | ≤0.030 | ≤0.030 | - | - | - | - | - | |
X56 or L390 | ≤0.28 | ≤1.40 | ≤0.030 | ≤0.030 | - | - | - | - | - | |
X60 or L415 | ≤0.28 | ≤1.40 | ≤0.030 | ≤0.030 | - | - | - | - | - | |
X70 | ≤0.28 | ≤1.40 | ≤0.030 | ≤0.030 | - | - | - | - | - | |
PSL 2 | BR or L245R | ≤0.24 | ≤1.20 | ≤0.025 | ≤0.015 | ≤0.40 | c | c | ≤0.04 | ≤0.25 |
X42R or L290R | ≤0.24 | ≤1.20 | ≤0.025 | ≤0.015 | ≤0.40 | ≤0.06 | ≤0.05 | ≤0.04 | ≤0.25 | |
BN or L245N | ≤0.24 | ≤1.20 | ≤0.025 | ≤0.015 | ≤0.40 | c | c | ≤0.04 | ≤0.25 | |
X42N or L290N | ≤0.24 | ≤1.30 | ≤0.025 | ≤0.015 | ≤0.40 | ≤0.06 | ≤0.05 | ≤0.04 | ≤0.25 | |
X46N or L320N | ≤0.24 | ≤1.40 | ≤0.025 | ≤0.015 | ≤0.40 | ≤0.07 | ≤0.05 | ≤0.04 | ≤0.25 | |
X52N or L360N | ≤0.24 | ≤1.40 | ≤0.025 | ≤0.015 | ≤0.45 | ≤0.10 | ≤0.05 | ≤0.04 | ≤0.25 | |
X56N or L390N | ≤0.24 | ≤1.40 | ≤0.025 | ≤0.015 | ≤0.45 | ≤0.10 | ≤0.05 | ≤0.04 | ≤0.25 | |
X60N or L415N | ≤0.24 | ≤1.40 | ≤0.025 | ≤0.015 | ≤0.45 | ≤0.10 | ≤0.05 | ≤0.04 | - | |
X65N or L450N | ≤0.24 | ≤1.40 | ≤0.025 | ≤0.015 | ≤0.45 | ≤0.10 | ≤0.05 | ≤0.04 | - | |
X70N | ≤0.24 | ≤1.40 | ≤0.025 | ≤0.015 | ≤0.45 | ≤0.10 | ≤0.05 | ≤0.04 | - | |
X80 | ≤0.24 | ≤1.40 | ≤0.025 | ≤0.015 | ≤0.45 | ≤0.10 | ≤0.05 | ≤0.04 | - | |
管線鋼彎頭，管線鋼彎管產品解析
標準：
API SPEC 5L—美國石油學會標準
GB/T9711——中國國家標準
用途：
用于石油、天然氣工業中的氧、水、油輸送管
主要生產鋼管牌號：
B、X42、X52、X60、X65、X70 L245 L290 L320 L360 L390 L450 L485
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 |
|
力學性能：
標準 | 牌號 | 抗拉強度（MPa） | 屈服強度（MPa） | 屈強比 | 伸長率（%） | 0℃沖擊功 Akv（J） | 熱處理狀態 |
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 |
