無縫鋼管（GB/T17395

12.60 12.30 12.0

(1)外徑和壁厚鋼管尺寸分為普通鋼管尺寸組(見表6-1)、精密鋼管尺寸組(見表6-2)和不鏽鋼管尺寸組(見表6-3)。鋼管的外徑分為三個系列。第一系列：標準化鋼管；第二系列：非標準化為主的鋼管；第三系列：特殊用途鋼管。普通鋼管的外徑分為系列l、2、3，精密鋼管的外徑分為系列2、3，不鏽鋼管的外徑分為系列l、2、3。(2)答應偏差見表6-4～表6-7。(3)長度見表6-8。(4)外形見表6-9_表6-11。(5)質量見表6-12。表6-1普通鋼管的尺寸規格
外 徑／mm 壁 厚／mm
系列1 系列2 系列3 O.25 O.30 0.40 0.50 0.60 0.80 1.0 1.2 1.4 1.5 1.6 1.8 2.0 2.2 (2.3) 2.5 (2.6) 2.8
單位長度理論質量／(kg／m)
6 0.035 O.042 0.055 0.068 0.080 0.103 0.123 0.142 0.159 0.166 0.174 O.186 0.197
7 0.042 O.050 O.065 O.080 0.095 O.122 O.148 O.172 0.193 O.203 O.213 O.231 0.247 0.260 0.277
8 O 048 0.057 0.075 O.092 O.110 O.142 O.173 0.201 O.228 0.240 0.253 0.275 0.296 O.315 O.339
9 0.054 0.064 0.085 O.105 0.124 O.162 O.197 O.231 O.262 0.277 0.292 0.320 O 345 0.369 0.401 O.428
10 (10.2) 0.060 0.072 0.095 O.117 0.139 O.182 0.222 0.261 O.297 O.314 O.332 0.364 O.395 O.423 0.462 0.497
11 0.066 0.079 0.105 O.129 O.154 0.201 0.247 O.290 0.331 0.351 0.371 0.408 0.444 0.477 0.524 O.566
12 0.072 0.087 O.115 O.142 0.169 0.221 0.271 0.320 0.366 O.388 0.410 0.453 O.493 0.532 0.586 O.635
13(12.7) 0.079 0.094 O.124 O.154 O.184 O.241 0.296 0.349 0.400 0.425 0.450 0.497 O.543 O.586 0.647 0.704
13.5 0.082 0.098 0.129 0.160 0.191 O.251 0.308 0.364 0.418 0.444 0.470 0.519 O.567 0.613 0.678 0.739
14 0.085 O.101 0.134 O.166 0.198 0.260 O.321 0.379 0.435 0.462 0.490 O.542 0.592 O.640 0.709 O.773
16 0.097 0.116 O.154 O.191 0.228 O.300 0.370 0.438 O.504 O.536 O.568 0.630 0.691 0.749 O.832 0.91
17 (17.2) O.103 0.124 O.164 O.203 O.243 O.320 0.395 0.468 O.539 0.573 0.608 O.675 0.740 O.803 0.894 0.98
18 0.109 O.131 O.174 O.216 0.258 O.340 0.419 0.497 O.573 O.610 O.647 0.719 0.789 O.857 0.956 1.05
19 0.115 0.138 O.183 0.228 O.272 0.359 0.444 0.527 0.608 O.647 0.687 0.763 O.838 0.911 1.02 1.12
20 0.122 O.146 0.193 O.240 O.287 O.379 O. 469 O.556 O.642 O.684 O.726 O.808 O.888 O.966 1.08 1.19
2l (21.3) O.203 O.253 O.302 0. 399 O.493 O.586 O.677 O.721 0.765 O.852 0.937 1.02 1.14 1.26
22 O.212 O.265 O.317 0 .418 O.518 O.616 0. 711 O.758 O.805 O.897 O.986 1.07 1.20 1.33
25 O.242 0.302 0.361 0.477 0.592 O.704 0.815 O.869 O.923 1.03 1.13 1.24 1.39 1.53
25.4 O.247 O.307 0 367 0.485 0.602 O.716 O.829 O.884 O. 939 1.05 1.15 1.26 1.4l 1.56
27 (26.9) O.262 0.327 O.391 O. 517 0.641 0 .763 0.884 O.943 1.00 1.13 1.23 1.34 1.51 1.67
28 O.272 0.339 0.406 0.537 O.666 0.793 0.918 0.98 1.04 1.16 1.28 1.40 1.57 1.74
6
7
8
9
10(10.2) O.518 O.537 O.561
11 0.592 O.615 0.647
12 O.666 0.694 0.734 0.789
13(12.7) 0.740 O.774 O.820 O.888
13.5 O.777 O.813 0.863 0.937
14 0.814 O.852 0.906 O.986
16 O.962 1.01 1.08 1.18 1.28 1.36
17(17.2) 1.04 1.09 1.17 1.28 1.39 1.48
18 1.11 1.17 1.25 1.38 1.50 1.60
19 1.18 1.25 1.34 1.48 1.61 1.73 1.83 1.92
20 1.26 1.33 1.42 1.58 1.72 1.85 1.97 2. 07
2l(21.3) 1.33 1.4l 1.51 1.68 1,83 1.97 2.10 2.22
22 1.4l 1.48 1.60 1.78 1.94 2.10 2 .24 2.37
25 1.63 1.72 1.86 2.07 2.28 2.47 2.64 2.8l 2.97 3.11
25.4 1.66 1.75 1.89 2.11 2.32 2.52 2.70 2.87 3.03 3.18
27(26.9) 1.78 1.88 2.03 2.27 2.50 2.71 2. 92 3.11 3.29 3.45
28 l.85 1.96 2.11 2.37 2.61 2.84 3.05 3.26 3.45 3.63
30 0.292 0.364 0. 435 0.576 0.715 O.852 0.987 1.05 1.12 1.25 1.38 1.5l 1.70 1.88
32(31.8) O.311 O.388 0.465 O.616 O.765 O.911 1.056 1.13 1.20 1.34 1.48 1.62 1.82 2.02
34(33.7) 0.331 0 .413 0.494 O.655 0.814 0.971 1.125 1.20 1.28 1.43 1.58 1.72 1.94 2.15
35 O.341 O.425 O.509 0.675 O.838 1.000 1.160 1.24 1.32 1.47 1.63 1.78 2.00 2.22
38 O.370 O.462 O.553 O.734 O.912 1.089 1.26 1.35 1.44 1.61 1.78 1.94 2.19 2.43
40 O.390 O. 487 0.583 O.774 0.962 1.148 1.33 1.42 1.52 1.69 1.87 2.05 2.31 2.57
42(42.4) 1.01 1.21 1.40 1.50 1.60 1.79 1.97 2.16 2.44 2.71
45(44.5) 1.09 1.30 1.51 1.61 1.71 1.92 2.12 2.32 2.62 2.9l
48(48.3) 1.16 1.39 1.6l 1.72 1.83 2.05 2.27 2.48 2.8l 3.12
5l 1.23 1.47 1.71 1.83 1.95 2.18 2.42 2.65 2.99 3.33
54 1.31 1.56 1.82 1.94 2.07 2.32 2.56 2.81 3.18 3.54
57 1.38 1.65 1.92 2.05 2.19 2.45 2.71 2.97 3.36 3.74
60(60.3) 1.46 1.74 2.02 2.16 2.31 2.58 2.86 3.14 3.55 3.95
63(63.5) 1.53 1.83 2.13 2.27 2.42 2.72 3.O1 3.30 3.73 4.16
65 1.58 1.89 2.20 2.35 2.50 2.81 3.11 3.41 3.85 4.29
68 1.65 1.98 2.30 2.46 2.62 2.94 3.26 3.57 4.04 4.50
70 1.70 2.04 2.37 2.53 2.70 3.03 3.35 3.68 4.16 4.64
73 1.78 2.12 2.47 2.64 2.82 3.16 3.50 3.84 4.35 4.85
76(76.1) 1.85 2.2l 2.58 2.76 2.94 3.29 3.65 4.00 4.53 5.05
77 2.6l 2.79 2.98 3.34 3.70 4.06 4.59 5.12
80 2.71 2.90 3.09 3.47 3.85 4.22 4.78 5.33
30 2.00 2.12 2.29 2.56 2.83 3.08 3.32 3.55 3.77 3.97 4.16 4.34
32(31.8) 2.15 2.27 2.46 2.76 3.05 3.33 3.59 3.85 4.09 4.32 4.53 4.74
34(33.7) 2.29 2.43 2.63 2.96 3.27 3.58 3.87 4.14 4.41 4.66 4.90 5.13
35 2.37 2.51 2.72 3.06 3.38 3.70 4.00 4.29 4.157 4.83 5.09 5.33 5.56 5.77
38 2.59 2.75 2.98 3.35 3.72 4.07 4.41 4.74 5.05 5.35 5.64 5.92 6.18 6.44 6.68 6.91
40 2.74 2.90 3.15 3.55 3.94 4.32 4.68 5.03 5.37 5.70 6.01 6.31 6.60 6.88 7.15 7.40
42(42.4) 2.89 3.06 3.32 3.75 4.16 4.56 4.95 5.33 5.69 6.04 6.38 6.71 7.02 7.32 7.6l 7.89
45(44.5) 3.11 3.30 3.58 4.04 4.49 4.93 5.36 5.77 6.17 6.56 6.94 7.30 7.65 7.99 8.32 8.63
48(48.3) 3.33 3.54 3.84 4.34 4.83 5.30 5.76 6.21 6.65 7.08 7.49 7.89 8.28 8.66 9.02 9.37
51 3.55 3.77 4.10 4.64 5.16 5.67 6.17 6.66 7.13 7.60 8.05 8.48 8.91 9.32 9.72 10.11
54 3.77 4.01 4.36 4.93 5.49 6.04 6,58 7.10 7.6l 8.11 8.60 9.08 9.54 9.99 10.43 10.85
57 4.00 4.25 4.62 5.23 5.83 6.41 6.99 7.55 8.10 8.63 9.16 9.67 10.17 10.65 11.13 11.59
60(60.3) 4.22 4.48 4.88 5.52 6.16 6.78 7.39 7.99 8.58 9.15 9.71 10.26 10.80 11.32 11.83 12.33
63(63.5) 4.4.4 4.72 5.14 5.82 6.49 7.15 7.80 8.43 9.06 9.67 10.26 10.85 11.42 11.98 12.53 13.07
65 4.59 4.88 5.31 6.02 6.71 7.40 8.07 8.73 9.38 10.01 10.63 11.25 11.84 12.43 13.00 13.56
68 4.81 5.11 5.57 6.31 7.05 7.77 8.48 9.17 9.86 10.53 11.19 11.84 12.47 13.10 13.71 14.30
70 4.96 5.27 5.74 6.51 7.27 8.01 8.75 9.47 10.18 10.88 11.56 12.23 12.89 13.54 14.17 14.80
73 5.18 5.51 6.00 6.81 7.60 8.38 9.16 9.91 lO.66 11.39 12.11 12.82 13.52 14.20 14.88 15.54
76(76.1) 5.40 5.75 6.26 7.10 7.93 8.75 9.56 10.36 11.14 11.91 12.67 13.42 14.15 14.87 15.58 16.28
77 5.47 5.82 6.34 7.20 8.05 8.88 9.70 10.50 11.30 12.08 12.85 13.61 14.36 15.09 15.8l 16.52
80 5.70 6 06 6.60 7.50 8.38 9.25 lO.10 10.95 11.78 12.60 13.41 14.20 14.99 15.76 16.52 17.26
30
32(31.8)
34(33.7)
35
38
40
42(42.4)
45(44.5) 9.22 9.77
48(48.3) lO.04 10.65
5l 10.85 11.54
54 11.67 12.43 13.14 13.81
57 12.48 13.32 14.11 14.85
60(60.3) 13.29 14.21 15.07 15.88 16.64 17.36
63(63.5) 14.11 15.09 16.03 16.92 17.76 18.55
65 14.65 15.68 16.67 17.61 18.50 19.33
68 15.46 16.57 17.63 18.64 19.61 20.52
70 16.01 17.16 18.27 19.33 20.35 21.3l 22.22
73 16.82 18.05 19.2,4 20.37 21.46 22.49 23.48 24.41 25.30
76 (76.1) 17.63 18.94 20.20 21.41 22.56 23.67 24.73 25.75 26.7l 27.62
77 17.90 19.23 20.52 21.75 22.93 24.07 25.1S 26.19 27.18 28.1l
80 18.72 20.12 21.48 22.79 24.04 25.25 26.41 27.52 28.58 29.59
30
32(31.8)
34(33.7)
35
38
40
42(42.4)
45(44.5)
48(48.3)
5l
54
57
60(60.3)
63(63.5)
65
68
70
73
76(76.1)
77
80
83(82.5) 2.82 3.02 3.21 3.60 4.00 4.38 4.96 5.54
85 2.89 3.09 3.29 3.69 4.09 4.49 5.09 5.68
89(88.9) 3.02 3.24 3.45 3.87 4.29 4.71 5.33 5.95
95 3.23 3.46 3.69 4.14 4.59 5.03 5.70 6.37
102(101.6) 3.47 3.z2 3.96 4.45 4.93 5.41 6.13 6.85
108 3.68 3.94 4.20 4.71 5.23 5.74 6.50 7.26
114(114.3) 4.16 4.44 4.98 5.52 6.07 6.87 7.68
121 4,42 4.71 5.29 5.87 6.45 7.31 8.16
127 5.56 6.17 6.77 7.68 8.58
133 8.05 8.98
140(139.7)
142(141.3)
146
152(152.4)
159
168(168.3)
180(177.8)
194(193.7)
203
219(219.1)
245(244.5)
B3(82.5) 5.92 6.30 6.86 7.79 8.71 9.62 10.51 11.39 12.26 13.12 13.96 14.80 15.62 16.42 17.22 18.00
85 6.07 6.46 7.04 7.99 8.93 9.86 10.78 11.69 12.58 13.46 14.33 15.19 16.04 16.87 17.69 18.49
89(88.9) 6.36 6.77 7.38 8.38 9.38 10.36 11.33 12.28 13.22 14.16 15.07 15.98 16.87 17.76 18.63 19.48
95 6.81 7.24 7.90 8.98 10.04 11.10 12.14 13.17 14.19 15.19 16.18 17.16 18.13 19.09 20.03 20.96
102(101.6) 7.32 7.80 8.50 9.67 10.82 11.96 13.09 14.21 15.31 16.40 17.48 18.55 19.60 20.64 21.67 22.69
108 7.77 8.27 9.02 10.26 11.49 12.70 13.90 15.09 16.27 17.44 18.59 19.73 20.86 21.97 23.08 24.17
114(114.3) 8.21 8.74 9.54 lO.85 12.15 13.44 14.72 15.98 17.23 18.47 19.70 20.91 22.11 23.30 24.48 25.65
121 8.73 9.30 10.14 11.54 12.93 14.30 15.67 17.02 18.35 19.68 20.99 22.29 23.58 24.86 26.12 27.37
127 9.19 9.77 10.66 12.13 13.59 15.04 16.48 17.90 19.3l 20.71 22.10 23.48 24.84 26.19 27.53 28.85
133 9.62 10.24 11.18 12.72 14.26 15.78 17.29 18.79 20.28 21.75 23.21 24.66 26.10 27.52 28.93 30.33
140 (139.7) 10.14 10.80 11.78 13.42 15.04 16.65 18.24 19.83 21,40 22.96 24.5l 26.04 27.56 29.08 30.57 32.06
142 (141.3) 10.28 10.95 11.95 13.6l 15.26 16.89 18.51 20.12 21.72 23.30 24.88 26.44 27.98 29.52 31.04 32.55
146 10.58 11.27 12.30 14.01 15.70 17.39 19.06 20.72 22.36 23.99 25.62 27.22 28.82 30.41 31.98 33.54
152 (152.4) 11.02 11.74 12.82 14.60 16.37 18.13 19.87 21.60 23.32 25.03 26.73 28.41 30.08 31.74 33.39 35.02
159 13.42 15.29 17.14 18.99 20.82 22.64 24.44 26.24 28.02 29.79 31.55 33.29 35.02 36.75
168 (168.3) 14.20 16.18 18.14 20.10 22.04 23.97 25.89 27.79 29.68 31.56 33.44 35.29 37.13 38.97
180 (177.8) 15.23 17.36 19.48 21.58 23.67 25.74 27.81 29.86 31.90 33.93 35.95 37.95 39.94 41.92
194 (193.7) 16.44 18.74 21.03 23.30 25.60 27.82 30.05 32.28 34.49 36.69 38.88 41.06 43.22 45.38
203 17.22 19.63 22.03 24.41 26.79 29.15 31.50 33.83 36.16 38.47 40.77 43.06 45.33 47.59
219 (219.1) 31.52 34.06 36.60 39.12 41.63 44.12 46.6l 49.08 51.54
245 (244.5) 35.36 38.23 41.08 43.93 46.76 49.57 52.38 55.17 57.95
83(82.5) 19.53 21.Ol 22.44 23.82 25.15 26.44 27.67 28.85 29.99 31.07 33.10
85 20.07 21.60 23.08 24.5l 25.89 27.23 28.51 29.74 30.92 32.06 34.18
89(88.9) 21.16 22.79 24.36 25.89 27.37 28.80 30.18 31.52 32.80 34.03 36.35 38.47
95 22.79 24.56 26.29 27.96 29.59 31.17 32.70 34.18 35.61 36.99 39.60 42.02
102 (101.6) 24.69 26.63 28.53 30.38 32.18 33.93 35.63 37.29 38.89 40.44 43.40 46.16 47.47 48.73 51.10
108 26.3l 28.41 30.46 32.45 34.40 36.30 38.15 39.95 41.70 43.40 46.66 49.7l 51.17 52.58 55.24 57.71
114 (114.3) 27.94 30.19 32.38 34.52 36.62 38.67 40.66 42.61 44.51 46.36 49.91 53.27 54.87 56.42 59.38 62.15
121 29.84 32.26 34.62 36.94 39.21 41.43 43.60 45.72 47.79 49.81 53.71 57.41 59.18 60.91 64.21 67.83
127 31.47 34.03 36.55. 39.01 41.43 43.80 46.12 48.38 50.60 52.77 56.96 60.96 62.88 64.76 68.36 71.76
133 33.10 35.81 38.47 41.08 43.65 46.16 48.63 51.05 53.41 55.73 60.22 64.51 66.58 68.60 72.50 76.20
140 (139.7) 34.99 37.88 40.71 43.50 46.24 48.93 51.56 54.15 56.69 59.18 64.02 68.65 70.90 73.09 77.33 81.38
142 (141.3) 35.54 38.47 41.36 44.19 46.98 49.72 52.41 55.04 57.63 60.17 65.11 69.84 72.13 74.38 78.72 82.86
146 36.62 39.66 42.64 45.57 48.46 51.29 54.08 56.82 59.50 62.14 67.27 72.20 74.60 76.94 81.48 85.82
152 (152.4) 38.25 41.43 44.56 47.64 50.68 53.66 56.59 59.48 62.32 65.10 70.53 75.76 78.30 80.79 85.62 90.26
159 40.15 43.50 46.80 50.06 53.27 56.42 59.53 62.59 65.60 68.55 74.33 79.90 82.61 85.27 90.45 95.43
168 (168.3) 42.59 46.17 49.69 53.17 56.59 59.97 63.30 66.58 69.81 72.99 79.2l 85.22 88.16 91.04 96.67 102.09
180 (177.8) 45.84 49.72 53.54 57.31 61.03 64.71 68.33 71.91 75.43 78.91 85.72 92.33 95.56 98.74 104.95 110.97
194 (193.7) 49.64 53.86 58.02 62.14 66.21 70.23 74.20 78.12 81.99 85.82 93.31 100.61 104.19 107.71 114.62 121.33
203 52.08 56.52 60.91 65.25 69.54 73.78 77.97 82.12 86.21 90.26 98.20 105.94 109.74 113.49 120.83 127.99
219 (219.1) 56.42 61.26 66.04 70.77 75.46 80.10 84.68 89.22 93.71 98.15 106.88 115.41 119.60 123.74 131.88 139.82
245 (244.5) 63.48 68.95 74.37 79.75 83.08 90.35 95.58 100.76 105.89 110.97 120.98 130.80 135.63 140.41 149.83 159.06
83(82.5)
85
89(88.9)
95
102(101.6)
108
114(114.3)
121 70.24
127 74.97
133 79.70 83.01 86.12
140(139.7) 85.22 88-88 92.33
142(141.3) 86.81 90.56 94.11
146 89.96 93.91 97.66 101.21 104.56
152(152.4) 94.69 98.94 102.98 106.83 110.48
159 100.22 104.81 109.20 113.39 117.39 121.19 126.51
168(168.3) 107.32 112.35 117.19 121.82 126.26 130.50 136.50
180(177.8) 116.79 122.41 127.84 133.07 138.10 142.93 149.81 156.26 160.30
194(193.7) 127.84 134.15 140.27 146.19 151.9l 157.43 165.35 172.83 177.56
203 134.94 141.70 148.26 154.62 160.78 166.75 175.33 183.47 188.65 200.74
219(219.1) 147.57 155.11 162.46 169.61 176.57 183.33 193.10 202.41 208.38 222.45
245(244.5) 168.08 176.91 185.54 193.98 202.22 210.25 221.94 233.18 240.44 257.71 273.74 288.54
273
299
325 (323.9)
340 (339.7)
351
356 (355.6)
377
402
406 (406.4)
426
450
457
480
500
508
530
560(559)
610
630
660
500
508
530
560(559)
610
630
660
273 42.72 45.92 49.10 52.28 55.44 58.59 61.73 64.86
299 53.9l 57.41 60.89 64.36 67.82 71.27
325 (323.9) 58.72 62.54 66.34 70.13 73.02 77.68
340 (339.7) 65.50 69.49 73.47 77.43 81.38
351 67.67 71.79 75.90 80.01 84.10
356(355.6) 77.02 81.18 85.33
377 81.67 86.10 90.51
402 87.22 91.85 96.67
406(406.4) 88.12 92.89 97.66
426 92.55 97.57 102.59
450 97.88 103.20 108.50
457 99.44 104.84 110.24
480 104.53 110.22 115.90
500 108.97 114.91 120.83
508 110.75 116.79 122.81
530 115.63 121.94 128.23
560(559) 122.29 128.97 135.63
610 133.39 140.69 147.97
630 137.82 145.36 152.89
660 144.49 152.40 160.30
273 71.07 77.24 83.35 89.42 95.43 101.40 107.32 113.19 119.01 124.78 136.17 147.37 152.89 158.37 169.17 179.77
299 78.13 84.93 91.69 98.39 105.05 111.68 118.22 124.73 131.19 137.60 150.28 162.76 168.92 175.04 187.12 199.01
325 (323.9) 85.18 92.63 100.02 107.37 114.67 121.92 129.12 136.27 143.37 150.43 164.38 178.14 184.95 191.71 205.07 218.24
340 (339.7) 89.25 97.07 104.84 112.56 120.22 127.85 135.42 142.94 150.41 157.83 172.53 187.03 194.21 201.34 215.44 229.35
351 92.23 100.32 108.36 116.35 124.29 132.18 140.02 147.81 155.56 163.25 178.49 193.53 200.98 208.38 223.04 237.48
356 (355.6) 93.59 101.80 109.97 118.08 126.14 134.16 142.12 150.04 157.91 165.72 181.21 196.50 204.07 211.60 226.49 241.19
377 99.28 108.02 116.69 125.32 133.90 142.44 150.92 159.35 167.74 176.07 192.59 208.92 217.01 225.05 240.98 256.71
402 106.06 115.41 124.71 133.95 143.15 152.30 161.40 170.45 179.45 188.40 206.16 233.72 232.42 241.08 258.24 275.21
406 (406.4) 107.15 116.60 126.00 135.34 144.64 153.89 163.09 172.24 181.34 190.39 208.34 226.10 234.90 243.66 261.02 278.18
426 112.58 122.52 132.40 142.24 152.03 161.77 171.46 181.10 190.70 200.24 219.18 237.92 247.22 256.46 274.8l 292.96
450 119.08 130.6l 140.09 150.52 160.91 171.24 181.52 191.76 201.94 212.08 232.20 252.12 262.0l 271.85 291.38 310.72
457 120.99 131.69 142.35 152.95 163.5l 174.01 184.47 194.88 205.23 215.54 236.01 256.28 266.34 276.36 296.23 315.9l
480 127.22 139.49 149.71 160.88 172.00 183.08 194.10 205.07 216.00 226.37 248.47 269.88 280.51 291.09 312.10 332.91
500 132.65 145.41 156.12 167.79 179.40 190.97 202.48 213.95 225.37 236.74 259.32 281.72 292.84 303.91 325.91 347.91
508 134.82 146.79 158.70 170.56 182.37 194.13 205.85 217.51 229.13 240.70 263.68 286.47 297.79 309.06 331.45 353.65
530 140.78 153.29 165.74 178.14 190.50 202.80 215.06 227.27 239.42 251.53 275.60 299.47 311.33 323.14 346.62 369.90
560(559) 148.92 163.16 175.36 188.50 201.60 214.64 227.64 240.58 253.48 266.33 291188 317.23 329.85 342.40 367.36 392.12
610 162.49 176.97 191.40 205.78 220.10 234.38 248.61 262.79 276.92 291.01 319.02 346.84 360.67 374.46 401.88 429.11
630 167.9l 183.88 197.80 212.67 227.49 242.26 256.98 271.65 286.28 300.85 329.85 358.66 373.00 387.28 415.69 443.91
660 176.06 191.77 207.43 223.04 238.60 254.1l 209.57 284.99 300.35 315.67 346.15 376.43 391.50 406.52 436.41 466.10
273 190.18 204.58 214.84 224.90 234.76 244.43 258.56 272.45 281.12 295.69 315.17 333.42
299 210.70 222.19 233.58 244.58 255.48 266.18 281.86 297.10 307.02 330.96 353.62 375.08
325 (323.9) 231.21 243.99 256.56 268.94 281.12 293.11 310.72 327.88 339.08 366.22 392.09 416.75
340 (339.7) 243.06 256.58 269.90 283.01 295.94 308.66 327.38 345.66 357.59 386.57 414.3l 440.82
351 251.73 265.79 279.64 293.3l 306.77 320.04 339.57 358.66 371.13 401.49 430.56 458.43
356 (355.6) 255.69 269.99 284.10 298.01 311.72 325.23 345.14 364.60 377.32 408.27 437.99 466.47
377 272.25 287.58 302.73 317.67 332.42 346.97 368.42 389.43 403.19 436.76 469.03 500.10
402 291.97 308.55 324.92 341.10 357.08 372.86 396.16 419.02 434.02 470.66 506.02 540.18
406(406.4) 295.15 311.92 328.49 344.87 361.04 377.02 400.63 423.78 438.97 476.09 511.97 546.62
426 310.91 328.67 346.23 363.59 380.75 397.72 422.80 447.43 463.61 503.22 541.53 578.65
450 329.85 348.79 367.53 386.08 404.42 422.57 449.43 475.84 493.20 535.77 577.04 617.12
457 335.40 354.68 373.77 392.66 411.35 429.85 457.22 484.15 501.86 545.27 587.44 628.38
480 353.53 373.94 394.17 414.19 436.02 453.64 482.72 511.35 530.19 576.46 621.43 665.20
500 369.31 390.71 411.92 432.93 453.74 474.36 504.91 535.02 554.85 603.59 651.02 697.26
508 375.64 397.44 419.05 440.45 461.66 482.67 513.82 544.53 564.75 614.44 662.90 710.13
530 392.98 415.87 438.55 461.04 483.34 505.43 538.20 570.53 591.84 644.28 695.41 745.35
560 (599) 416.68 441.05 465.21 489.19 512.96 536.53 571.53 606.08 628.87 684.97 739.84 793.48
610 456.14 482.97 509.60 536.04 562.28 588.32 627.02 665.27 690.52 752.79 813.83 873.63
630 471.92 499.74 527.36 554.79 582.01 609.04 649.2l 688.94 715.18 779.92 843.42 905.69
660 495.60 524.90 554.00 582.90 611.60 640.11 682.51 724.46 752.18 820.61 887.81 953.78
註：1.括弧內尺寸表示相應的英制規格。2.通常應採用公稱尺寸，不推薦採用英制尺寸。3.理論質量按密度為7.85kg／dm3計算。表6-2 緊密鋼管的尺寸規格
外徑／mm 壁厚/mm
系列2 系列3 O.5 (0.8) 1.0 (1.2) 1.5 (1.8) 2.O (2.2) 2.5 (2.8) 3.0 (3.5) 4 (4.5)
單位長度理
4 O.043 O.063 0.074 O.083
5 0.056 0.083 O.099 O.112
6 0.068 0.103 0.123 O.142 O.166 O.186 O.197
8 O.092 O.142 0.173 O.201 0.240 0.275 0.296 O.315 O.339
1O 0.117 O.182 O.222 0.260 O.314 O.364 0.395 O.423 O.462
12 0.142 O.221 0.271 O.320 0.388 O.453 O.493 O.532 O.586 0.635 0.666
12.7 0.150 0.235 O.289 O.340 O.414 O.484 O.528 O.570 O.629 0.684 0.718
14 O.166 O.260 O.321 0.379 0.462 O.542 O.592 O.640 O.709 0.773 0.814 O.906
16 O.191 0.300 O.370 O.438 0.536 O.630 O.691 O.749 0.832 0.911 0.962 1.08 1.18
18 O.216 O.339 O.419 O.497 O.610 O.719 0.789 0.857 O.956 1.05 1.1l 1.25 1.38 1.50
20 O.240 O.379 O.469 0.556 O.684 O.808 O.888 0.966 1.08 1.19 1.26 1.42 1.58 1.72
22 0.265 0.418 0.518 O.616 O.758 O.897 0.986 1.07 1.20 1.33 1.41 1.60 1.70 1.94
25 0.302 0.477 0.592 0.704 0.869 1.03 1.13 1.24 1.39 1.53 1.63 1.86 2.07 2.28
28 O.339 O.537 0.666 0.793 0.980 1.16 1.28 1.40 1.57 1.74 1.85 2.11 2.37 2.61
30 O.364 O.576 0.715 O.852 1.05 1.25 1.38 1.51 1.70 1.88 2.00 2.29 2.56 2.83
32 O.388 O.616 O.765 O.91l 1.13 1.34 1.48 1.62 1.82 2.02 2.15 2.46 2.76 3.05
35 0.425 O.675 0.838 1.00 1.24 1.47 1.63 1.78 2.00 2.22 2.37 2.72 3.06 3.38
38 O.462 O.734 O.912 1.09 1.35 1.61 1.78 1.94 2.19 2.43 2.59 2.98 3.35 3.72
40 O .87 O.773 O.962 1.15 1.42 1.70 1.87 2.05 2.31 2.57 2.74 3.15 3.55 3.94
42 O.813 1.01 1.21 1.50 1.78 1.97 2.16 2.44 2.71 2.89 3.32 3.75 4.16
45 O.872 1.09 1.30 1.61 1.92 2.12 2.32 2.62 2.91 3.11 3.58 4.04 4.49
48 1.16 1.39 1.72 2.05 2.27 2.48 2.8l 3.12 3.33 3.84 4.34 4.83
50 0.971 1.21 1.4.4 1.79 2.14 2.37 2.59 2.93 3.26 3.48 4.01 4.54 5.05
外徑／mm 壁厚/mm
系 列 2 系 列 3 5 (5.5) 6 7 8 (9) 10 (11) 12.5 (14) 16 (18) 20 (22) 25
論質量／(kg/m)
4
5
6
8
1O
12
12.7
14
16
18
20 1.85
22 2.10
25 2.47 2.64 2.81
28 2.84 3.05 3.26 3.63 3.95
30 3.08 3.32 3.55 3.97 4.34
32 3.33 3.59 3.85 4.32 4.74
35 3.70 4.00 4.29 4.83 5.33
38 4.07 4.41 4.74 5.35 5.92 6.44 6.91
40 4.32 4.68 5.03 5.70 6.31 6.88 7.40
42 4.56 4.95 5.33 6.04 6.71 7.32 7.89
45 4.93 5.36 5.77 6,56 7.30 7.99 8.63 9.22 lO
48 5.30 5.76 6.21 7.08 7.89 8.66 9.37 10.0 10.9
50 5.55 6.04 6.51 7.42 8.29 9.10 9.86 10.6 11.6
外徑／mm 壁厚/mm
系 列 2 系 列 3 0.5 (O．8) 1．O (1.2) 1.5 (1.8) 2．O (2.2) 2.5 (2.8) 3.0 (3.5) 4 (4.5) 0.5
單位長度理
55 1.07 1.33 1.59 1.98 2.36 2.61 2.86 3.24 3.60 3.85 4.45 5.03 5.60
60 1.17 1.46 1.74 2.16 2.58 2.86 3.14 3.55 3.95 4.22 4.88 5.52 6.16
63 1.23 1.53 1.83 2.27 2.72 3.01 3.30 3.73 4.16 4.44 5.13 5.82 6.49
70 1.36 1.70 2.04 2.53 3.03 3.35 3.68 4.16 4.64 4.96 5.74 6.5l 7.27
76 1.48 1.85 2.21 2.76 3.29 3.65 4.00 4.53 5.05 5.40 6.26 7.10 7.93
80 1.56 1.95 2.33 2.90 3.47 3.85 4.22 4.78 5.33 5.70 6.60 7.50 8.38
90 2.63 3.27 3.92 4.34 4.76 5.39 6.02 6.44 7.47 8.48 9.49
100 2.92 3.64 4.36 4.83 5.31 6.01 6.71 7.18 8.33 9.47 lO．6
110 3.22 4.01 4.80 5.33 5.85 6.63 7.40 7.92 9.19 10.5 11.7
120 5.25 5.82 6.39 7.24 8.09 8.66 lO．1 11.4 12.8
130 5.69 6.31 6.93 7.86 8.78 9.40 10.9 12.4 13.9
140 6.13 6.8l 7.48 8.48 9.47 10.1 11.8 13.4 15．O
150 6.58 7.30 8.02 9.09 10.2 10.9 12.6 14.4 16.1
160 7.02 7.79 8.56 9.71 10.9 11.6 13.5 15.4 17.3
170 14.4 16.4 18.4
180
190
200
220
240
260
註：1.鋼的密度7.85kg／dm3。 2.括弧內尺寸不推薦使用。
外徑／mm 壁厚/mm
系 列 2 系 列 3 5 (5.5) 6 (7) 8 (9) lO (11) 12.5 (14) 16 (18) 20 (22) 25
單位長度理
55 6.17 6.71 7.25 8.29 9.27 10.2 11.1 11.9 13.1 14.2
60 6.78 7.39 7.99 9.15 10.3 11.3 12.3 13.3 14.6 15.9 17.4
63 7.15 7.80 8.43 9.67 10.9 12.0 13.1 14.1 15.6 16.9 18.6
70 8.01 8.75 9.47 10.9 12.2 13.5 14.8 16.0 17.7 19.3 21.3
76 8.75 9.56 10.4 11.9 13.4 14.9 16.3 17.6 19.6 21.4 23.7
80 9.25 10.1 10.9 12.6 14.2 15.8 17.3 18.7 20.8 22.8 25.3 27.5
90 10.5 11.5 12.4 14.3 16.2 18．O 19.7 21.4 23.9 26.2 29.2 32.0 34.5 36.9
100 11.7 12.8 13.9 16.1 18.2 20.2 22.2 24.1 27.0 29.7 31.1 36.4 39.5 42.3 46.2
110 12.9 14.2 15.4 17.8 20.1 22.4 24.7 26.9 30.1 33.1 37.1 40.8 44.4 47.7 52.4
120 14.2 15.5 16.9 19.5 22.1 24.6 27.1 29.6 33.1 36.6 41.0 45.3 49.3 53.2 58.6
130 15.4 16.9 18.3 21.2 24.1 26.9 29.6 32.3 36.2 40.0 45.0 49.7 54.3 58.6 64.7
140 16.6 18.2 19.8 23.0 26.0 29.1 32.1 35.0 39.3 43.5 48.9 54.2 59.2 64.0 70.9
150 17.9 19.6 21.3 24.7 28.0 31.3 34.5 37.7 42.4 46.9 52.9 58.6 64.1 69.4 77.1
160 19.1 21.0 22.8 26.4 30.0 33.5 37.0 40.4 45.5 50,4 56.8 63.0 69.1 74.9 83.2
170 20.3 22.3 24.3 28.1 32.0 35,7 39.5 43.1 48.6 53.9 60.8 67.5 74.0 80.3 89.4
180 21.6 23.7 25.7 29.9 33.9 38.0 41.9 45.8 51.6 57.3 64.7 71.9 78.9 85,7 95.6
190 25.0 27.2 31.6 35.9 40.2 44.4 48.6 54.7 60.8 68.7 76.3 83.8 91.1 102
200 28.7 33.3 37.9 42.4 46.9 51.3 57.8 64.2 72.6 80.8 88.8 96.6 108
220 36.8 41.8 46.8 51.8 56.7 64.0 71.1 80.5 89.7 98.6 107 120
240 40.2 45.8 51.3 56.7 62.1 70.1 78.0 88.4 98.6 109 118 133
260 43.7 49.7 55.7 61.7 67.5 76.3 84.9 96.3 107 118 129 145
註：1.鋼的密度7.85kg／dm3。 2.括弧內尺寸不推薦使用。表6-3不鏽鋼管的尺寸規格
外 徑／mm 壁 厚／mm
系列l 系列2 系列3 1.O 1.2 1.4 1.5 1.6 2 2.2(2.3) 2.5(2.6) 2.8(2.9) 3.O 3.2 3.5(3.6) 4 4.5 5 5.5(5.6) 6 6.5(6.3) 7.O(7.1)
6 ● ●
7 ● ●
8 ● ●
9 ● ●
lO(10.2) ● ● ● ● ● ●
12 ● ● ● ● ● ●
12.7 ● ● ● ● ● ● ● ● ● ● ●
13(13.5) ● ● ● ● ● ● ● ● ● ● ●
14 ● ● ● ● ● ● ● ● ● ● ● ●
16 ● ● ● ● ● ● ● ● ● ● ● ● ●
17(17.2) ● ● ● ● ● ● ● ● ● ● ● ● ●
18 ● ● ● ● ● ● ● ● ● ● ● ● ● ●
19 ● ● ● ● ● ● ● ● ● ● ● ● ● ●
20 ● ● ● ● ● ● ● ● ● ● ● ● ● ●
2l(2l.3) ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
22 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
24 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
25 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
25.4 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
27(26.9) ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
30 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
32(31.8) ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
34(33.7) ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
35 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
38 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
40 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
42(42.4) ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
45(44.5) ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
48(48.3) ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
51 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
54 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
57 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
60(60.3) ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
64(63.5) ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
68 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
70 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
73 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
76(76.1) ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
83(82.5) ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
89(88.9) ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
95 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
102(101.6) ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
108 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
114(114.3) ● ● ● ● ● ● ● ● ● ● ● ● ● ● ◆
127 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
133 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
140(139.7) ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
146 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
152 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
159 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
168(168.3) ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
180 ● ● ● ● ● ● ● ● ● ● ● ● ● ●
194 ● ● ● ● ● ● ● ● ● ● ● ● ●
219(219.1) ● ● ● ● ● ● ● ● ● ● ● ● ●
245 ● ● ● ● ● ● ● ● ● ● ● ● ●
273 ● ● ● ● ● ● ● ● ● ● ● ● ●
325(323.9) ● ● ● ● ● ● ● ● ● ● ●
351 ● ● ● ● ● ● ● ● ● ● ●
356(355.6) ● ● ● ● ● ● ● ● ● ● ●
377 ● ● ● ● ● ● ● ● ● ● ●
406(406.4) ● ● ● ● ● ● ● ● ● ● ● ●
426 ● ● ● ● ● ● ● ● ●
外 徑／mm 壁 厚／mm
系列l 系列2 系列3 7.5 8 19 9.0(8.8) 9.5 10 11 12(12.5) 14(14.2) 15 16 17(17.5) 18 20 22(22.2) 24 25 26 28
6
7
8
9
lO(10.2)
12
12.7
13(13.5)
14
16
17(17.2)
18
19
20
2l(2l.3)
22
24
25
25.4
27(26.9)
30
32(31.8)
34(33.7)
35
38
40
42(42.4) ●
45(44.5) ● ● ●
48(48.3) ● ● ●
51 ● ● ● ●
54 ● ● ● ● ● ●
57 ● ● ● ● ● ●
60(60.3) ● ● ● ● ● ●
64(63.5) ● ● ● ● ● ●
68 ● ● ● ● ● ● ● ●
70 ● ● ● ● ● ● ● ●
73 ● ● ● ● ● ● ● ●
76(76.1) ● ● ● ● ● ● ● ●
83(82.5) ● ● ● ● ● ● ● ● ●
89(88.9) ● ● ● ● ● ● ● ● ●
95 ● ● ● ● ● ● ● ● ●
102(101.6) ● ● ● ● ● ● ● ● ●
108 ● ● ● ● ● ● ● ● ●
114(114.3) ● ● ● ● ● ● ● ● ●
127 ● ● ● ● ● ● ● ● ●
133 ● ● ● ● ● ● ● ● ●
140(139.7) ● ● ● ● ● ● ● ● ● ● ●
146 ● ● ● ● ● ● ● ● ● ● ●
152 ● ● ● ● ● ● ● ● ● ● ●
159 ● ● ● ● ● ● ● ● ● ● ●
168(168.3) ● ● ● ● ● ● ● ● ● ● ● ● ●
180 ● ● ● ● ● ● ● ● ● ● ● ● ●
194 ● ● ● ● ● ● ● ● ● ● ● ● ●
219(219.1) ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
245 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
273 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
325(323.9) ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
351 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
356(355.6) ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
377 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
406(406.4) ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
426 ● ● ● ● ● ● ● ● ● ● ● ● ● ●
表6-4標準化外徑答應偏差
偏差等級 標準化外徑答應偏差
Dl ±1.5％,最小±0.75mm
D2 ±1.0％,最小±O．50mm
D3 ±0.75％,最小±0.30mm
D4 ±0.50％,最小±0.10mm
表6-5非標準化外徑答應偏差
偏差等級 非標準化外徑答應偏差(％)
NDl +1.25 —1.50
ND2 ±1.25
ND3 +1.25 —1.0
ND4 ±0.8
註：特殊用途的鋼管和冷軋(拔)鋼管外徑答應偏差可採用盡對偏差。表6-6標準化壁厚答應偏差
偏差等級 壁厚答應偏差
S,D
0.1 < DIV> 0.05 < DIV> 0.025 < DIV> S／D≤0.025
S1 ±15％,最小±0.6mm
S2 A ±12.5％,最小±0.4 mm
B +正偏差取決於質量要求一12.5％
S3 A ±l0％,最小士0.2mm
B ±10％ 士12.5％最小±0.4mm ±15％
C +正偏差取決於質量要求-10％
S4 A ±7.5％ 最小±0.15mm
B ±7.5％ 1 0％ ±12.5％ ±15％ 最小±0.2mm
S5 ±5％,最小±0.10mm
註：s是鋼管公稱壁厚，D是鋼管公稱外徑。表6-7非標準化壁厚答應偏差
偏差等級 非標準化壁厚答應偏差(％)
NSL +15 -12.5
NS2 +15 -10
NS3 +12.5 -10
NS4 +12.5 -7.5
註：特殊用途的鋼管和冷軋(拔)鋼管壁厚答應偏差可採用盡對偏差。表6-8全長答應偏差
全長答應偏差等級 全長答應偏差／mm
L1 0～20
L2 0～l0
L3 0～5
註：1．鋼管一般以通常長度交貨。通常長度應符合以下規定： 熱軋(擴)管：3000—12000mm； 冷軋(拔)管：2000—10500mm； 熱軋(擴)短尺管的長度不小於2m，冷軋(拔)短尺管的長度不小於lm。 2．特殊用途的鋼管，如不銹耐酸鋼極薄壁鋼管、小直徑鋼管等的長度要求可另行規定。 3．定尺長度和倍尺長度應在通常長度範圍內，全長答應偏差分為三級(見表中)。每個倍尺長度按以下規定留出切口餘量： 外徑≤159mm：5～lOmm；外徑>159mm：10～15mm.表6-9全長彎曲度
彎曲度等級 全長彎曲度(％) ≤
E1 0.20
E2 0.15
E3 0.10
E4 0.08
E5 0.06
表6-10每米彎曲度
彎曲度等級 每米彎曲度／(mm／m) ≤
F1 3.0
F2 2.0
F3 1.5
F4 1.0
F5 0.5
表6-11鋼管的圓度
圓度等級 圓度不大於外徑答應偏差(％)
NRl 80
NR2 70
NR3 60
NR4 50
表6-12質量答應偏差
質量答應偏差等級 單根鋼管質量答應偏差(％)
W1 ±10
W2 士7.5
W3 +lO -5
W4 +10 -3.5
W5 +6.5 -3.5
註：按理論質量交貨的鋼管，每批不小於10t鋼管的理論質量與實際質量答應偏差為±7.5％或±5％。

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