(1)尺寸规格见表6-17、表6-18。
(2)允许偏差见表6-20。
(3)牌号和化学成分见表6-19。
(4)力学性能见表6-21。
(5)用途适于一般结构及机械结构用。
表6-17结构用不锈钢热轧(挤、扩)无缝钢管的尺寸规格(mm)

壁厚 外径

4.5

5

6

7

8

9

10

ll

12

13

14

15

16

17

18

19

20

22

24

25

26

28

68

◎

◎

◎

◎

◎

◎

◎

◎

◎

70

◎

◎

◎

◎

◎

◎

◎

◎

◎

73

◎

◎

◎

◎

◎

◎

◎

◎

◎

76

◎

◎

◎

◎

◎

◎

◎

◎

◎

80

◎

◎

◎

◎

◎

◎

◎

◎

◎

83

◎

◎

◎

◎

◎

◎

◎

◎

◎

89

◎

◎

◎

◎

◎

◎

◎

◎

◎

95

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

102

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

108

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

114

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

121

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

127

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

133

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

140

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

146

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

152

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

159

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

168

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

180

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

194

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

219

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

245

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

237

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

325

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

35l

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

377

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

◎

426

◎

◎

◎

◎

◎

◎

◎

◎

◎

表6-18结构用不锈钢冷拔(轧)无缝钢管的尺寸规格   (mm)

壁厚 外径

1.O

1.2

1.4

1.5

1.6

2.0

2.2

2.5

2.8

3.O

3.2

3.5

4.O

4.5

5.O

5.5

6.O

6.5

7.0

7.5

8.0

8.5

9.0

9.5

lO

ll

12

13

14

15

lO

●

●

●

●

●

●

●

●

11

●

●

●

●

●

●

●

●

12

●

●

●

●

●

●

●

●

●

●

13

●

●

●

●

●

●

●

●

●

●

14

●

●

●

●

●

●

●

●

●

●

●

●

15

●

●

●

●

●

●

●

●

●

●

●

●

16

●

●

●

●

●

●

●

●

●

●

●

●

●

17

●

●

●

●

●

●

●

●

●

●

●

●

●

18

●

●

●

●

●

●

●

●

●

●

●

●

●

●

19

●

●

●

●

●

●

●

●

●

●

●

●

●

●

20

●

●

●

●

●

●

●

●

●

●

●

●

●

●

2l

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

22

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

23

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

24

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

25

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

 

壁厚 外径

1.0

1.2

1.4

1.5

1.6

2.0

2.2

2.5

2.8

3.0

3.2

3.5

4.0

4.5

5.O

5.5

6.0

6.5

7.O

7.5

8.O

8.5

9.O

9.5

lO

11

12

13

14

15

27

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

28

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

30

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

32

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

34

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

35

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

36

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

38

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

40

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

42

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

45

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

48

●

●

◆

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

50

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

51

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

53

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

54

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

◆

●

●

●

●

●

●

●

●

●

56

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

 

壁厚 外径

1.0

1.2

1.4

1.5

1.6

2.0

2.2

2.5

2.8

3.0

3.2

3.5

4.0

4.5

5.O

5.5

6.0

6.5

7.O

7.5

8.O

8.5

9.O

9.5

lO

11

12

13

14

15

57

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

60

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

63

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

65

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

68

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

70

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

73

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

75

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

78

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

80

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

83

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

85

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

89

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

90

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

95

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

100

●

●

●

●

●

●

◆

●

●

●

●

●

●

●

●

●

●

●

●

●

●

102

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

 

壁厚 外径

1.o

1.2

1.4

1.5

1.6

2.0

2.2

2.5

2.8

3.0

3.2

3.5

4.0

4.5

5.0

5.5

6.O

6.5

7.O

7.5

8.O

8.5

9.O

9.5

lO

11

12

13

14

15

108

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

114

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

127

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

133

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

140

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

146

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

159

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

140

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

146

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

159

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

●

注：1.●表示冷拔(轧)钢管规格。
      2.钢管的通常长度规定如下：
    热轧（挤、扩）钢管……………………………………………………2～12m
    冷拔(轧)钢管……………………………………………………………1—8m
      3.钢管的弯曲度不得大于如下规定：
    壁厚<15mm……………………………………………………·……1.5mm／m
    壁厚≥15mm……………………………………·…………………2.0mm／m
热扩管…………………………………………………………………3.Omm／m
表6-19结构用不锈钢无缝钢管的牌号和化学成分

组织 类型	序号	牌  号	化学成分(质量分数)(％)
			C	Si	Mn	P	S	Ni	C	Mo	其  他
奥氏 体型	1	OCr18Ni9	≤0.07	≤1.00	≤2.00	≤0.035	≤0.030	8.00～11.00	17.00～19.00
	2	lCrl8Ni9	≤O.15	≤1.00	≤2.00	≤O.035	≤O.030	8.00～lO.00	17.00～19.00
	3	00Crl9NilO	≤0.030	≤1.00	≤2.00	≤0.035	≤O.030	8.00～12.00	18.00～20.00
	4	0Crl8Ni10Ti	≤0.08	≤1.00	≤2.O0	≤O.035	≤O.030	9.00～12.00	17.00～19.00		Ti≥5C％
	5	OCrl8NillNb	≤O.08	≤1.00	≤2.00	≤0.035	≤0.030	9.00～13.00	17.00～19.00		Nb≥10C％
	6	0Crl7Nil2M02	≤0.08	≤1.00	≤2.00	≤O.035	≤O.030	10.00～14.00	16.00～18.50	2.00～3.00
	7	00Crl7Nil4M02	≤0.030	≤1.00	≤2.00	≤O.035	≤0.030	12.00～15.00	16.00～18.oo	2.00～3.00
	8	OCrl8Nil2M02Ti	≤0.08	≤1.00	≤2.00	≤0.035	≤O.030	11.00～14.00	16.00～19.00	1.80～2.50	Ti 5C％～O.70
	9	1Crl8Nil2M02Ti	≤O.12	≤1.00	≤2.00	≤O.035	≤O.030	11.00～14.00	16.00～19.00	1.80～2.50	Ti 5(C％-0.02) ～0.80
	lO	0Crl8Nil2M03Ti	≤0.08	≤1.00	≤2.00	≤O.035	≤0.030	11.00～14.00	16.oo～19.00	2.50～3.50	Ti5C％～O.70
	11	1Crl8Ni12Mo3Ti	≤O.12	≤1.00	≤2.00	≤O.035	≤0.030	11.00～14.00	16.00～19.00	2.50～3.50	Ti 5(C％-0.02) ～0.80
	12	1Crl8Ni9Ti	≤0.12	≤1.00	≤2.00	≤O.035	≤0.030	8.00～11.00	17.00～19.oo		Ti 5(C％～O.02) ～0.80
	13	0Cr19Nil3M03	≤O.08	≤1.00	≤2.00	≤0.035	≤O.030	11.00～15.00	18.00～20.00	3.00～4.00
	14	00Crl9Nil3M03	≤0.030	≤1.00	≤2.00	≤0.035	≤O.030	11.00～15.00	18.00～20.00	3.00～4.00
铁素 体型 马氏 体型	15	OCrl3	≤O.08	≤0.60	≤0.80	≤0.035	≤O.030		12.00～14.00
	16	lCrl7	≤O.12	≤0.75	≤1.00	≤O.035	≤0.D30		16.00～18.00
	17	1Crl3	≤O.15	≤1.00	≤1.00	≤0.035	≤0.030		11.50～13.50
	18	2Crl3	O.16～0.25	≤1.00	≤1.00	≤O.035	≤O.030		12.00～14.00
注：*残余元素Ni≤O.60。

表6-20结构用不锈钢无缝钢管的尺寸允许偏差

热轧(挤、扩)钢管				冷拔(轧)钢管
尺寸／mm		允许偏差／mm		尺寸／mm		允许偏差／mm
		普通级	较高级			普通级	较高级
外径D	68≤D≤159	±1.25	±l	外径D	10≤D≤30	±O.30	土O.20
					30	土O.40	±O.30
	159	±1.5
					D>5	±O.9％	±0.8％
壁厚	<15	+15 -12.5	±12.5	壁厚	≤3	±14％	+12％ -10％
	≥15	+20 -15			>3	+12％ -10％	±lO％

注：供机械加工用钢管应在合同中注明，根据需方要求，经供需双方协议，可规定机械加工余量。
表6-2l结构用不锈钢无缝钢管的力学性能

组织类型	序号	牌  号	推荐热处理制度	力学性能			密度(g／cm3)
				ób／MPa	ó0. 2／MPa	δ5(％)
				≥
奥氏体型	l	OCr18Ni9	lOl0～1150℃，急冷	520	205	35	7.93
	2	lCrl8Ni9	1010～1150℃，急冷	520	206	35	7.90
	3	00Crl9Ni10	1010～1150℃，急冷	480	175	35	7.93
	4	OCrl8Nil0Ti	920～1150℃，急冷	520	206	35	7.95
	5	0Crl8NillNb	980～1150cC，急冷	520	205	35	7.98
	6	OCrl7Nil2M02	1010～1150℃，急冷	520	205	35	7.98
	7	00Cr17Nil4M02	1010～1150℃。急冷	480	175	35	7.98
	8	OCr18Mil2M02Ti	1000～1100℃，急冷	530	205	35	8.00
	9	lCrl8Nil2M02Ti	1000～1100℃，急冷	530	205	35	8.00
	10	oCr18Nil2M03Ti	1000～1100℃，急冷	530	205	35	8.10
	11	1Crl8Nil2M03Ti	1000～1100℃。急冷	530	205	35	8.10
	12	1Cr18Ni9Ti	1000～1100℃，急冷	520	205	35	7.90
	13	0Crl9Nil3M03	10lO～1150℃，急冷	520	205	35	7.98
	14	00Crl9Ni13M03	lOlO～1150℃，急冷	480	175	35	7.98
铁索体型	15	OCrl3	780～830℃，空冷或缓冷	370	180	22	7.70
	16	lCrl7	780～850℃，空冷或缓冷	410	245	20	7.70
马氏体型	17	lCrl3	800～900℃，缓冷	410	205	20	7.70
	18	2Crl3	800～900℃，缓冷	470	215	19	7.70

注：1.热挤压管的抗拉强度允许降低20MPa。
      2.钢管经热处理并酸洗交货。凡经整体磨、镗或经保护气氛热处理的钢管，可不经酸洗交货。
      3.供机械加工用钢管可不经酸洗交货。

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