|
- 27simn液压支柱用无缝钢管
-
27simn液压支柱用无缝钢管 |
标准 GB/T17396
用途 用于制造煤矿液压支架和支柱的 缸、柱
|
尺寸规格(mm)
|
外径
|
6
|
7
|
8
|
9
|
10
|
11
|
12
|
13
|
14
|
15
|
16
|
17
|
18
|
19
|
20
|
壁厚
|
76(76.1)
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
|
|
|
|
|
83(82.5),89
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
|
|
|
|
(88.9)
|
95.5
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
|
|
|
|
102.0
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
|
|
|
|
(101.6),105
|
108 114
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
|
|
|
|
(114.3)
|
121.0
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
|
|
|
|
127 133
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
140.0
|
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
(139.7),146
|
152.0
|
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
(152.4),159
|
168(168.3)
|
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
180(177.8)
|
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
194(193.7)
|
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
203.0
|
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
219.0
|
|
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
(219.1),224
|
232.0
|
|
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
245.0
|
|
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
(244.5),252
|
273.0
|
|
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
299.3
|
|
|
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
(323.9)
|
|
尺寸公差
|
钢管尺寸(mm)
|
允许偏差(%)
|
普通级
|
较高级
|
外径
|
±1
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±0.75
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壁厚
|
≤20
|
±12.5
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±10
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>20
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±12.5
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|
注:
1、长度钢管的通常长度为3~12米;定尺和倍尺长度应在通常长度范围内 ;定尺长度允许偏差为+20mm.
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2、弯曲度
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壁厚
|
弯曲度
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≤
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S≤15mm
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1.3mm/m
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15≤S≤30mm
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1.5mm/m
|
S≥30mm
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2 mm/m
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|
机械性能
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牌号
|
抗拉强度
|
屈服点
|
伸长率
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断面收缩率
|
冲击功
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硬度
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σb/MPa
|
σb/MPa
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δ5(%)
|
ψ(%)
|
Aku 2/J
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HBS
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≥
|
≤
|
20
|
400
|
245
|
20
|
-
|
-
|
-
|
35
|
510
|
305
|
17
|
-
|
-
|
-
|
45
|
590
|
335
|
14
|
-
|
-
|
-
|
27SiMn
|
980
|
935
|
12
|
40
|
39
|
217
|
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注:
1、钢管以热轧状态交货。需方要求以退火或调质状态交货时,应在合同 中注明。
2、壁厚大于14mm钢管应做冲击试验。
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化学成分(%)
|
牌号
|
C
|
Si
|
Mn
|
P
|
S
|
Cr
|
Ni
|
Cu
|
≤
|
20
|
0.17~0.24
|
0.17~0.37
|
0.35~0.65
|
0.035
|
0.035
|
0.25
|
0.25
|
0.2
|
35
|
0.32~0.40
|
0.17~0.37
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0.50~0.80
|
0.035
|
0.035
|
0.25
|
0.25
|
0.2
|
45
|
0.42~0.50
|
0.17~0.37
|
0.50~0.80
|
0.035
|
0.035
|
0.25
|
0.25
|
0.2
|
27SiMn
|
0.24~0.32
|
1.10~1.40
|
1.10~1.40
|
0.035
|
0.035
|
0.3
|
0.3
|
0.3
|
|
|
|