dn200大口径无缝钢管公称外径∣dn200大口径无缝钢管国标壁厚∣dn200大口径焊管规格表
工艺流程
开卷——上卷——校平——对接焊——铣边——成型——内焊——外焊——切管——破口——后续焊——水压试验
4. 检验工艺
原材料检验——校平检验——对接焊检验——成型检验——内焊检验——外焊检验——切管检验——超声波检验——坡口检验——外形尺寸检验——X射线检验——水压试验——最终检验
|
公称外径
nominal O.D
mm |
公称壁厚 Nominal Wall Thickness mm |
|
5.0 |
5.5 |
6.0 |
7.0 |
8.0 |
9.0 |
10.0 |
11.0 |
12.0 |
13.0 |
14.0 |
15.0 |
16.0 |
18.0 |
20.0 |
22.0 |
|
219 |
26.39 |
28.96 |
31.51 |
36.60 |
41.63 |
|
|
|
|
|
|
|
|
|
|
|
|
273 |
33.04 |
36.28 |
39.51 |
45.92 |
|
|
|
|
|
|
|
|
|
|
|
|
|
325 |
|
|
|
54.90 |
62.54 |
70.13 |
|
|
|
|
|
|
|
|
|
|
|
377 |
|
|
|
|
72.80 |
81.67 |
|
|
|
|
|
|
|
|
|
|
|
426 |
|
|
|
|
82.46 |
92.55 |
102.59 |
|
|
|
|
|
|
|
|
|
|
457 |
|
|
|
|
88.58 |
99.43 |
110.23 |
120.98 |
131.60 |
142.34 |
|
|
|
|
|
|
|
508 |
|
|
|
|
98.64 |
110.75 |
122.81 |
134.82 |
146.78 |
158.69 |
|
|
|
|
|
|
|
529 |
|
|
|
|
102.78 |
115.41 |
127.99 |
140.51 |
152.99 |
165.42 |
|
|
|
|
|
|
|
559 |
|
|
|
|
108.70 |
122.07 |
135.38 |
148.65 |
161.87 |
175.04 |
|
|
|
|
|
|
|
610 |
|
|
|
|
118.76 |
133.39 |
147.96 |
162.48 |
176.96 |
191.39 |
|
|
|
|
|
|
|
630 |
|
|
|
|
122.71 |
137.82 |
152.89 |
167.91 |
182.88 |
197.80 |
|
|
|
|
|
|
|
660 |
|
|
|
|
128.63 |
144.48 |
160.29 |
176.05 |
191.76 |
207.42 |
|
|
|
|
|
|
|
720 |
|
|
|
|
140.46 |
157.80 |
175.09 |
192.32 |
209.51 |
226.65 |
|
|
|
|
|
|
|
820 |
|
|
|
|
160.19 |
179.99 |
199.75 |
219.45 |
239.10 |
258.71 |
276.26 |
297.77 |
317.23 |
|
|
|
|
914 |
|
|
|
|
178.74 |
200.06 |
222.93 |
244.95 |
266.92 |
288.84 |
310.72 |
332.54 |
354.31 |
|
|
|
| 
