螺旋鋼管是以帶鋼卷板為原材料,經(jīng)常溫?cái)D壓成型,以自動(dòng)雙絲雙面埋弧焊工藝焊接而成的螺旋縫鋼管.
?。?/span>1）原材料即帶鋼卷，焊絲，焊劑。在投入前都要經(jīng)過嚴(yán)格的理化檢驗(yàn)。
?。?/span>2）帶鋼頭尾對(duì)接，采用單絲或雙絲埋弧焊接，在卷成鋼管后采用自動(dòng)埋弧焊補(bǔ)焊。
?。?/span>3）成型前，帶鋼經(jīng)過矯平、剪邊、刨邊，表面清理輸送和予彎邊處理。（4）采用電接點(diǎn)壓力表控制輸送機(jī)兩邊壓下油缸的壓力，確保了帶鋼的平穩(wěn)輸送。
?。?/span>5）采用外控或內(nèi)控輥式成型。
?。?/span>6）采用焊縫間隙控制裝置來保證焊縫間隙滿足焊接要求，管徑，錯(cuò)邊量和焊縫間隙都得到嚴(yán)格的控制。
?。?/span>7）內(nèi)焊和外焊均采用美國林肯電焊機(jī)進(jìn)行單絲或雙絲埋弧焊接，從而獲得穩(wěn)定的焊接規(guī)范。
公稱外徑 nominal O.D |
公稱壁厚 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 |
39.46 |
43.33 |
47.26 |
54.90 |
62.54 |
70.13 |
|
|
|
|
|
|
|
|
|
|
377 |
45.88 |
50.39 |
54.89 |
63.87 |
72.80 |
81.67 |
|
|
|
|
|
|
|
|
|
|
426 |
51.91 |
57.03 |
62.14 |
72.33 |
82.46 |
92.55 |
102.59 |
|
|
|
|
|
|
|
|
|
457 |
55.73 |
61.24 |
66.73 |
77.69 |
88.58 |
99.43 |
110.23 |
120.98 |
131.60 |
142.34 |
|
|
|
|
|
|
508 |
|
|
74.28 |
86.48 |
98.64 |
110.75 |
122.81 |
134.82 |
146.78 |
158.69 |
|
|
|
|
|
|
529 |
|
|
77.38 |
90.11 |
102.78 |
115.41 |
127.99 |
140.51 |
152.99 |
165.42 |
|
|
|
|
|
|
559 |
|
|
81.82 |
95.29 |
108.70 |
122.07 |
135.38 |
148.65 |
161.87 |
175.04 |
|
|
|
|
|
|
610 |
|
|
89.37 |
104.09 |
118.76 |
133.39 |
147.96 |
162.48 |
176.96 |
191.39 |
|
|
|
|
|
|
630 |
|
|
92.33 |
107.54 |
122.71 |
137.82 |
152.89 |
167.91 |
182.88 |
197.80 |
|
|
|
|
|
|
660 |
|
|
96.77 |
112.72 |
128.63 |
144.48 |
160.29 |
176.05 |
191.76 |
207.42 |
|
|
|
|
|
|
720 |
|
|
105.64 |
123.08 |
140.46 |
157.80 |
175.09 |
192.32 |
209.51 |
226.65 |
|
|
|
|
|
|
820 |
|
|
|
140.34 |
160.19 |
179.99 |
199.75 |
219.45 |
239.10 |
258.71 |
276.26 |
297.77 |
317.23 |
256.01 |
394.58 |
432.96 |
914 |
|
|
|
|
178.74 |
200.06 |
222.93 |
244.95 |
266.92 |
288.84 |
310.72 |
332.54 |
354.31 |
397.74 |
440.95 |
483.96 |
920 |
|
|
|
|
179.92 |
202.19 |
224.41 |
246.58 |
268.70 |
290.77 |
312.79 |
334.76 |
356.68 |
400.40 |
443.91 |
486.13 |
1016 |
|
|
|
|
198.86 |
223.49 |
248.08 |
272.62 |
297.10 |
321.54 |
345.93 |
370.27 |
394.56 |
443.02 |
491.26 |
539.30 |
1020 |
|
|
|
|
199.65 |
224.38 |
249.07 |
273.70 |
298.39 |
322.82 |
347.31 |
371.75 |
396.14 |
44.79 |
493.23 |
541.47 |
1220 |
|
|
|
|
|
|
296.39 |
327.95 |
357.47 |
386.94 |
416.36 |
445.73 |
475.58 |
533.58 |
591.88 |
649.98 |
1420 |
|
|
|
|
|
|
347.71 |
362.21 |
416.66 |
451.06 |
485.41 |
519.71 |
553.96 |
622.36 |
690.52 |
758.49 |
1620 |
|
|
|
|
|
|
397.03 |
436.46 |
475.84 |
515.17 |
554.46 |
593.60 |
632.87 |
711.14 |
789.17 |
867.00 |
