外径(毫米)

壁  厚（毫米）

16

17

18

19

20

22

(24)

25

(26)

28

理论重量（公斤/米）

102

33.93

35.64

37.29

38.89

40.44

43.40

46.17

-

-

-

108

36.30

38.15

39.95

41.70

43.40

46.66

49.72

51.17

52.58

55.24

114

38.67

40.67

42.62

44.51

46.36

49.91

53.27

54.87

56.43

59.38

121

41.43

43.60

45.72

47.79

49.82

53.71

57.41

59.19

60.91

64.22

127

43.80

46.12

48.39

50.61

52.78

56.97

60.96

62.89

64.76

68.36

133

46.17

48.63

51.05

53.42

55.73

60.22

64.51

66.59

68.61

72.50

140

48.93

51.57

54.16

56.70

59.19

64.02

68.66

70.90

73.10

77.34

146

51.30

54.08

56.82

59.51

62.15

67.27

72.21

74.60

76.94

81.48

152

53.66

56.60

59.48

62.32

65.11

70.59

75.76

78.30

80.79

85.62

159

56.43

59.53

62.59

65.60

68.56

74.33

79.90

82.62

85.28

90.46

168

59.98

63.31

66.59

69.82

73.00

79.21

85.23

88.16

91.05

96.67

180

64.71

68.34

71.91

75.44

78.92

85.72

92.33

95.56

98.74

104.96

194

70.24

74.21

78.13

82.00

85.28

93.32

100.62

104.19

107.72

114.63

203

73.78

77.97

82.12

86.21

90.26

98.20

105.94

109.74

113.49

120.83

219

80.10

84.69

89.23

93.71

98.15

106.88

115.42

119.61

123.75

131.89

245

90.36

95.59

100.77

105.90

110.98

120.99

130.80

135.64

140.42

149.84

273

101.41

107.33

113.20

119.02

124.79

136.18

147.38

152.90

158.38

169.18