720x10螺旋管每米重量是多少 螺旋焊管直徑1400壁厚允許偏差
螺旋焊管機組均采用在線連續(xù)檢驗方式來保證焊縫的的焊接質(zhì)量,這是螺旋焊管生產(chǎn)區(qū)別于直縫焊管生產(chǎn)的另一重要特征。連續(xù)檢驗有利于焊接缺陷的監(jiān)控、焊接質(zhì)量的穩(wěn)定、焊接等級的保證。由于生產(chǎn)工藝的限制,直縫焊管極難實現(xiàn)連續(xù)不間斷檢驗。這將使焊接隱患與質(zhì)量問題的出現(xiàn)機率增加,甚至影響將來管線運行的整體工作可靠性。
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 |
|
|
|
|
|
|
·生產(chǎn)資質(zhì)
當前疫情不確定因素較多,焦企鋼廠汽運受限,焦炭庫存積壓明顯,螺旋焊管鋼廠燜爐增加需求下降,同時焦煤 價格出現(xiàn)高位回調(diào),成本支撐減弱,焦炭價格仍有弱勢回落的可能;后續(xù)仍需關(guān)注疫情發(fā)展對運輸影響、鋼廠減產(chǎn)及庫存變化情況。
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