其中X42,X46,X56,X80等材质为API标准材质，不是我国管材的常用材质。
直缝钢管在国内主要应用于自来水工程、石化工业、化学工业、电力工业、农业灌溉、城市建设。作液体输送用：给水、排水。作气体输送用：煤气、蒸气、液化石油气。作结构用：作打桩管、作桥梁；码头、道路、建筑结构用管等。
|
钢管的理论质量/(kg/m) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
298.5 |
|
|
|
|
|
|
|
40.4 |
43.3 |
46.8 |
50.3 |
57.3 |
54.3 |
71.1 |
78.0 |
|
|
|
323.9 |
|
|
|
|
|
|
|
44.0 |
47.0 |
50.9 |
54.7 |
62.3 |
69.9 |
77.4 |
84.9 |
|
|
|
325 |
|
|
|
|
|
|
|
|
47.2 |
51.1 |
54.9 |
62.5 |
70.1 |
77.7 |
85.2 |
|
|
|
351 |
|
|
|
|
|
|
|
|
51.0 |
55.2 |
59.4 |
67.7 |
75.9 |
84.1 |
92.2 |
|
|
|
355.6 |
|
|
|
|
|
|
|
|
51.7 |
56.0 |
60.2 |
68.6 |
76.9 |
85.2 |
93.5 |
101.7 |
|
|
368 |
|
|
|
|
|
|
|
|
53.6 |
57.9 |
62.3 |
71.0 |
79.7 |
88.3 |
96.8 |
105.3 |
|
|
377 |
|
|
|
|
|
|
|
|
54.9 |
59.4 |
63.9 |
72.8 |
81.7 |
90.5 |
99.28 |
108.0 |
|
|
402 |
|
|
|
|
|
|
|
|
58.6 |
63.4 |
68.2 |
77.7 |
87.2 |
96.7 |
106.1 |
115.4 |
|
|
406.4 |
|
|
|
|
|
|
|
|
59.2 |
64.1 |
68.9 |
78.6 |
88.2 |
97.8 |
107.3 |
116.7 |
123.3 |
|
419 |
|
|
|
|
|
|
|
|
61.1 |
66.1 |
71.1 |
81.1 |
91.0 |
100.9 |
110.7 |
120.4 |
127.2 |
|
426 |
|
|
|
|
|
|
|
|
62.1 |
67.2 |
72.3 |
82.5 |
92.5 |
102.6 |
112.6 |
122.5 |
129.4 |
|
457 |
|
|
|
|
|
|
|
|
66.7 |
72.2 |
77.7 |
88.5 |
99.4 |
110.2 |
121.0 |
131.7 |
139.1 |
|
478 |
|
|
|
|
|
|
|
|
69.8 |
75.6 |
81.3 |
92.7 |
104.1 |
115.4 |
126.7 |
131.7 |
145.7 |
|
480 |
|
|
|
|
|
|
|
|
70.1 |
75.9 |
81.6 |
93.1 |
104.5 |
115.9 |
127.2 |
138.5 |
146.3 |
|
508 |
|
|
|
|
|
|
|
|
74.3 |
80.4 |
85.5 |
98,6 |
110.7 |
122.8 |
134.8 |
146.8 |
155.1 |
直缝焊管专栏 
产品分类
