低溫用無縫鋼管
標(biāo)準(zhǔn)
ASTM A333——Seamless and Welded Steel Pipe for Low-Temperature Service
主要生產(chǎn)鋼管牌號(hào)
沖擊溫度
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級(jí)別
|
最低沖擊試驗(yàn)溫度
| |
|
℉
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℃
| |
|
Grade 1
|
-50
|
-45
|
|
Grade 3
|
-150
|
-100
|
|
Grade 4
|
-150
|
-100
|
|
Grade 6
|
-50
|
-45
|
|
Grade 7
|
-100
|
-75
|
|
Grade 8
|
-320
|
-195
|
|
Grade 9
|
-100
|
-75
|
|
Grade 10
|
-75
|
-60
|
力學(xué)性能
|
標(biāo)準(zhǔn)
|
牌號(hào)
|
抗拉強(qiáng)度（MPa）
|
屈服強(qiáng)度（MPa）
|
伸長率（%）
| |
|
縱向
|
橫向
| ||||
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ASTM A333
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Grade 1
|
≥380
|
≥205
|
≥35
|
≥25
|
|
Grade 3
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≥450
|
≥240
|
≥30
|
≥20
| |
|
Grade 4
|
≥415
|
≥240
|
≥30
|
≥16.5
| |
|
Grade 6
|
≥415
|
≥240
|
≥30
|
≥16.5
| |
|
Grade 7
|
≥450
|
≥240
|
≥30
|
≥22
| |
|
Grade 8
|
≥690
|
≥515
|
≥22
|
||
|
Grade 9
|
≥435
|
≥315
|
≥28
|
||
|
Grade 10
|
≥550
|
≥450
|
≥22
|
||
|
Grade 11
|
≥450
|
≥240
|
≥18
|
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