表6-75鍋爐、熱交換器用不銹鋼無縫鋼管的尺寸規格
|
壁厚mm
外徑／mm
|
1.2
|
1.5
|
2.0
|
2.2
|
2.5
|
2.8
|
3.0
|
3.2
|
3.5
|
4.0
|
4.5
|
5.0
|
5.5
|
6.0
|
6.5
|
7.0
|
7.5
|
8.0
|
9.0
|
10.0
|
11.0
|
12.0
|
13.0
|
|
8.O
|
×
|
×
|
×
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
lO.O
|
×
|
×
|
×
|
×
|
×
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
12.O
|
×
|
×
|
×
|
×
|
×
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
14.0
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
16.O
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
19.O
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
22.0
|
×
|
X
|
×
|
×
|
×
|
×
|
×
|
×
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
25.O
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
27.0
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
32.0
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
|
|
|
|
|
|
|
|
|
|
|
|
|
34.0
|
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
|
|
|
|
|
|
|
|
|
|
|
|
38.O
|
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
|
|
|
|
|
|
|
|
|
|
|
42.O
|
|
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
|
|
|
|
|
|
|
|
|
|
45.0
|
|
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
|
|
|
|
|
|
|
|
|
48.0
|
|
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
|
|
|
|
|
|
|
|
51.0
|
|
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
|
|
|
|
|
|
|
|
54.0
|
|
|
×
|
×
|
X
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
|
|
|
|
|
57.0
|
|
|
X
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
X
|
×
|
×
|
×
|
|
|
|
|
|
60.O
|
|
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
|
|
|
|
|
63.O
|
|
|
|
|
|
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
|
|
|
|
|
65.0
|
|
|
|
|
|
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
|
|
|
|
|
70.0
|
|
|
|
|
|
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
|
|
|
|
|
76.0
|
|
|
|
|
|
|
|
|
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
|
83.0
|
|
|
|
|
|
|
|
|
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
|
89.0
|
|
|
|
|
|
|
|
|
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
X
|
×
|
×
|
×
|
|
102.0
|
|
|
|
|
|
|
|
|
|
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
|
|
108.O
|
|
|
|
|
|
|
|
|
|
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
X
|
×
|
×
|
×
|
×
|
|
|
114.O
|
|
|
|
|
|
|
|
|
|
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
|
121.O
|
|
|
|
|
|
|
|
|
|
|
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
|
127.0
|
|
|
|
|
|
|
|
|
|
|
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
|
133.0
|
|
|
|
|
|
|
|
|
|
|
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
|
140.0
|
|
|
|
|
|
|
|
|
|
|
|
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
|
146.O
|
|
|
|
|
|
|
|
|
|
|
|
|
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
X
|
|
159.O
|
|
|
|
|
|
|
|
|
|
|
|
|
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
×
|
X
|
×
|
(2)尺寸偏差見表6-76。
表6-76鍋爐、熱交換器用不銹鋼無縫鋼管的尺寸允許偏差 (mm)
|
鋼管種類
|
鋼管尺寸
|
允許偏差
|
鋼管種類
|
鋼管尺寸
|
允許偏差
|
|
熱軋、熱擠壓管
|
外徑：≤140
>140
|
士1.25％
土1％
|
冷拔(軋)管
|
外徑：8～30
>30～50
>50
|
士O.20
士O.30
±O.8％
|
|
壁厚≤10
>10
|
士12.5％
±15％
|
壁厚：1.O～3.0
>3.0
|
+12％
-lO
±10％
|
注：1.冷拔(軋)熱交換器鋼管，在公差帶不變的情況下，以正公差交貨。
2.鋼管的通常長度規定如下：
熱軋(擠)鋼管………………………………………………………3～12m
冷拔(軋)鋼管…………………………………………………………3～8m
水管鍋爐用鋼管通常長度為：
熱軋(擠)鋼管………………………………………………………4～12m
冷拔(軋)鋼管…………………………………………………………4～8m
3.鋼管的彎曲度不得大于如下規定：
壁厚≤15mm………………………………………………………1.5mm／m
壁厚>15mm………………………………………………2.Omm／m
(3)牌號和化學成分見表6-77。
表6-77鍋爐、熱交換器用不銹鋼無縫鋼管的牌號和化學成分
|
組織類型
|
序號
|
牌 號
|
化學成分(質量分數)(％)
|
|
C
|
Si
|
Mn
|
P
|
S
|
Ni
|
Cr
|
M0
|
其 他
|
|
≤
|
|
奧氏體
型
|
l
|
0Crl8Ni9
|
O.07
|
1.00
|
2.00
|
O.035
|
O.030
|
8.00～11.00
|
17.00～19.00
|
|
|
|
2
|
1Crl9Ni9
|
O.04～O.10
|
1.00
|
2.oo
|
O.035
|
0.030
|
8.00～11.00
|
18.00～20.00
|
|
|
|
3
|
00Crl9Nil0
|
O.030
|
1.00
|
2.00
|
O.035
|
0.030
|
8.00～12.00
|
18.00～20.00
|
|
|
|
4
|
2Cr23Nil3
|
O.20
|
1.oo
|
2.00
|
O.035
|
O.030
|
12.00～15.00
|
22.00～24.00
|
|
|
|
5
|
OCr23Nil3
|
O.08
|
1.00
|
2.00
|
O.035
|
O.030
|
12.00～15.00
|
22.00～24.00
|
|
|
|
6
|
2Cr25Ni20
|
0.25
|
1.00
|
2.00
|
0.035
|
O.030
|
19.00～22.00
|
24.00～26.00
|
|
|
|
7
|
OCr25Ni20
|
0.08
|
1.00
|
2.00
|
0.035
|
0.030
|
19.00～22.00
|
24.00～26.00
|
|
|
|
8
|
0Crl7Nil2M02
|
O.08
|
1.oo
|
2.00
|
O.035
|
O.030
|
10.00～14.00
|
16.00～18.50
|
2.00～3.00
|
|
|
9
|
lCrl7Nil2M02
|
0.04～O.10
|
|
2.00
|
0.030
|
0.030
|
11.00～14.00
|
16.00～18.oo
|
2.00～3.00
|
|
|
10
|
0Crl7Nil4M02
|
O.030
|
1.00
|
2.00
|
0.035
|
0.030
|
12.00～15.00
|
16.00～18.00
|
2.00～3.00
|
|
|
11
|
OCrl9Nil3M03
|
O.08
|
1.oo
|
2.00
|
0.035
|
0.030
|
11.00～15.00
|
18.00～20.00
|
3.00～4.00
|
|
|
12
|
00Crl9Ni13Mo3
|
O.030
|
1.00
|
2.00
|
0.035
|
O.030
|
11.00～15.00
|
18.00～20.00
|
3.00～4.00
|
|
|
組織類型
|
序號
|
牌 號
|
化學成分(質量分數)(％)
|
|
C
|
Si
|
Mn
|
P
|
S
|
Ni
|
Cr
|
M0
|
其 他
|
|
≤
|
|
奧氏
體型
|
l
|
0Crl8Ni9
|
O.07
|
1.00
|
2.00
|
O.035
|
O.030
|
8.00～11.00
|
17.00～19.00
|
|
|
|
13
|
1Crl8Ni9Ti
|
O.12
|
1.00
|
2.00
|
0.035
|
O.030
|
8.00～11.00
|
17.00～19.00
|
|
Ti×(wc—O.02) ～O.80
|
|
14
|
0Crl8Nil0Ti
|
0.08
|
1.00
|
2.00
|
O.035
|
O.030
|
9.00～12.00
|
17.00～19.00
|
|
Ti>5×wc
|
|
15
|
lCrl8NillTi
|
O.04～O.10
|
<0.75
|
2.00
|
O.030
|
0.030
|
9.00～13.00
|
17.00～20.00
|
|
Ti4×wc～O.60
|
|
16
|
0Crl8NillNb
|
0.08
|
1.00
|
2.00
|
O.035
|
0.030
|
9.00～13.00
|
17.00～19.00
|
|
Nb≥lO×wc
|
|
17
|
lCrl9NillNb
|
O.04～0.10
|
1.00
|
2.00
|
0.035
|
0.030
|
9.00～13.00
|
17.00～20.00
|
|
Na+Ta≥8×Wc～1.00
|
|
18
|
OCrl8Nil3Si4
|
O.08
|
3.00～5.oo
|
2.00
|
0.035
|
O.030
|
11.50～15.00
|
15.oo～20.00
|
|
|
|
19
|
OCrl8Nil2M02Ti
|
O.08
|
1.00
|
2.00
|
0.035
|
O.030
|
11.00～14.oo
|
16.00～19.00
|
1.80～2.50
|
Ti5×wc～O.70
|
|
20
|
1Cr18Ni12M02Ti
|
0.12
|
1.oo
|
2.00
|
O.035
|
0.030
|
11.00～14.00
|
16.00～19.00
|
1.80_2.50
|
Ti5×(Wc一0.02)-0.80
|
|
21
|
lCrl8Ni12Mo3Ti
|
O.12
|
1.00
|
2.00
|
O.035
|
0.030
|
11.00～14.00
|
16.00～19.00
|
2.50～3.50
|
Ti5×(Wc—O.02)0.80
|
|
奧氏體
鐵索體型
|
22
|
OCr26Ni5M02
|
O.08
|
1.00
|
1.50
|
O.035
|
0.030
|
3.00～6.00
|
23.00～28.00
|
1.00～3.00
|
|
|
鐵素體型
|
23
|
1Crl7
|
0.12
|
0.75
|
1.00
|
0.035
|
0.030
|
|
16.00～18.00
|
|
|
|
24
|
00Cr27M0
|
O.OlO
|
O.40
|
O.40
|
O.030
|
O.020
|
允許含有
≤0.50Ni
|
25.00～27.50
|
O.75～1.50
|
N<0.015
|
|
25
|
(1Cr25Ti)
|
O.12
|
1.00
|
O.80
|
0.035
|
O.030
|
|
24.00～27.00
|
|
Ti5×Wc～O.80
|
(4)力學性能見表6-78。
表6-78鍋爐、熱交換器用不銹鋼無縫鋼管的力學性能
|
組織類型
|
序號
|
牌 號
|
推薦熱處理制度
|
力學性能
|
密度ρ／(g／cm3)
|
|
ób／Mpa
|
ós或ó0. 2／MPa
|
δ5(％)
|
|
≥
|
|
奧氏體型
|
1
|
OCrl8Ni9
|
10lO～1150℃
|
急冷
|
520
|
206
|
35
|
7.93
|
|
2
|
lCrl9Ni9
|
10lO～1150℃
|
520
|
205
|
35
|
7.93
|
|
3
|
00Crl9Nil0
|
1010～1150℃
|
480
|
175
|
35
|
7.93
|
|
4
|
2Cr23Ni13
|
1030～1150℃
|
520
|
205
|
35
|
7.98
|
|
5
|
OCr23Nil3
|
1030～1150℃
|
520
|
205
|
35
|
7.98
|
|
6
|
2Cr25Ni20
|
1030～1180℃
|
520
|
205
|
35
|
7.98
|
|
7
|
0Cr25Ni20
|
1030～1180℃
|
520
|
206
|
35
|
7.98
|
|
8
|
OCrl7Nil2M02
|
lOlO～1150℃
|
520
|
205
|
35
|
7.98
|
|
9
|
1Cr17Nil2M02
|
>1040℃
|
520
|
205
|
35
|
7.98
|
|
lO
|
00Crl7Nil4M02
|
10lO～1150℃
|
480
|
175
|
40
|
7.98
|
|
11
|
OCrl9Ni13Mo3
|
lOlO～1150℃
|
520
|
205
|
35
|
7.98
|
|
12
|
00Crl9Nil3M03
|
1010～1150℃
|
480
|
175
|
35
|
7.98
|
|
13
|
1Cr18Ni9Ti
|
1000～1100℃
|
550
|
205
|
40
|
7.90
|
|
14
|
OCrl8NilOTi
|
920～1150℃
|
520
|
205
|
35
|
7.93
|
|
15
|
lCrl8Ni11Ti
|
冷軋≥1095℃
熱軋≥1050℃
|
520
|
205
|
35
|
7.93
|
|
16
|
0Crl8NillNb
|
9801150℃
|
520
|
205
|
35
|
7.98
|
|
17
|
lCrl9NillNb
|
冷軋≥1095℃
熱軋≥1050℃
|
520
|
205
|
35
|
7.98
|
|
18
|
0Crl8Ni13Si4
|
10lO～1150℃
|
520
|
205
|
35
|
7.98
|
|
19
|
OCrl8Ni12Mo2Ti
|
1000～1100℃
|
530
|
205
|
35
|
8.O
|
|
20
|
lCrl8Nil2Mo2Ti
|
1000～1100℃
|
540
|
215
|
35
|
8.O
|
|
2l
|
1Crl8Nil2M03Ti
|
1000～1100℃
|
540
|
215
|
35
|
8.1
|
|
奧氏體-鐵素體型
|
22
|
OCr26Ni5M02
|
950～1100℃
|
|
590
|
390
|
18
|
|
|
鐵素體型
|
23
|
1Crl7
|
780～850℃
|
空冷或緩冷
|
410
|
245
|
20
|
7.7
|
|
|
24
|
OOCr27Mo
|
900～1050℃
|
快冷
|
410
|
245
|
20
|
|
|
|
25
|
(1Cr25Ti)
|
700～800℃
|
空冷
|
440
|
245
|
17
|
7.7
|
注：1.熱擠壓管的抗拉強度可降低20MPa.
2.鋼管經熱處理并酸洗交貨。凡經整體磨、鏜的或經光亮處理的鋼管可不酸洗交貨。
表6-79鍋爐、熱交換器用不銹鋼無縫鋼管的硬度要求
|
鋼管的牌號
|
洛氏硬度
|
鋼管的牌號
|
洛氏硬度
|
|
HRB
|
HRC
|
HRB
|
HRC
|
|
0Crl8Ni9,1Crl9Ni9,00Crl9Nil0
2Cr23Ni13,0Cr23Ni13.2Cr25Ni20
0Cr25Ni20,0Cr17Nil2M02
00C17Nil4M02,OCr18Nil0Ti
|
<90
|
|
lCrl7Nil2Mo2.1Cr18Ni11Ti
OCrl8Ni11Nb,1Crl9NillNb
|
<90
|
|
|
OCr26Ni5M02
|
|
<29
|
|
OCrl8Nil3Si4
|
<95
|
|
注：1.經供需雙方協商，在合同中注明可做上述硬度試驗。
2.對壁厚≥2mm的鋼管可以做洛氏硬度試驗，每一試樣測定3處。
(5)用途適用于鍋爐過熱器、熱交換器、冷凝器、催化管等。
