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螺旋鋼管水壓試驗及標(biāo)準(zhǔn)

發(fā)布日期：2014/5/29 10:12:48 訪問次數(shù)：2765

螺旋鋼管水壓試驗機(jī)在進(jìn)行試壓時，首先通過端部密封裝置對受試鋼管兩端進(jìn)行密封并注入低壓水，在注水過程中通過排氣閥排出管內(nèi)空氣，在低壓水充滿后，通過增壓裝置向管內(nèi)注入高壓水進(jìn)行增壓直至達(dá)到規(guī)定試驗壓力。

　　在達(dá)到規(guī)定試驗壓力后按規(guī)定時間保壓，若螺旋鋼管在試壓中無泄漏、變形等現(xiàn)象，則進(jìn)行卸壓。然后打開端部密封裝置，排出低壓水，將受試螺旋管送到檢查臺進(jìn)行目視檢查有無可疑滲透。按標(biāo)準(zhǔn)要求對試壓過程的壓力變化曲線采用自動記錄裝置記錄。
螺旋鋼管水壓試驗標(biāo)準(zhǔn)：

稱外徑 mm	壁厚mm	靜水壓試驗壓力單位：MPa 1MPa約等于10公斤
		SY/T5037-2000		GB/T9711.1-1997
		Q235B	16Mn	Q235B	L360
219	6/7/8	7.7/9.0/10.3	11.3/13.2/15.1	10.9/12.8/14.6	14.8/17.3/19.7
273	6/7/8	6.2/7.2/8.3	9.1/10.6/12.1	8.8/10.2/11.7	13.5/15.7/17.9
325	6/7/8	5.2/6.1/6.9	7.6/8.9/10.2	7.4/8.6/9.5	11.3/13.2/15.1
377	6/7/8/9	4.5/5.2/6.0/6.7	6.6/7.7/8.8/9.9	6.4/7.4/8.5/9.5	9.7/11.4/13.0/14.6
426	6/7/8/9/10	4.0/4.6/5.3/6.0/6.6	5.8/6.8/7.8/8.7/9.7	5.6/6.6/7.5/8.4/9.4	8.6/10.1/11.5/12.9/14.4
478	6/7/8/9/10	3.5/4.1/4.7/5.3/5.9	5.2/6.1/6.9/7.8/8.7	0.0/5.9/6.7/7.5/8.4	7.7/9.0/10.2/11.5/12.8
529	6/7/8/9/10	3.2/3.7/4.3/4.8/5.3	4.7/5.5/6.3/7.0/7.8	0.0/5.3/6.0/6.8/7.6	7.3/8.6/9.8/11.0/12.2
630	6/7/8/9/10	2.7/3.1/3.6/4.0/4.5	3.9/4.6/5.3/5.9/6.6	0.0/4.4/5.1/5.7/6.3	6.2/7.2/8.2/9.3/10.3
720	6/7/8/9/10	2.4/2.7/3.1/3.5/3.9	3.5/4.0/4.6/5.2/5.8	0.0/3.9/4.4/5.0/5.5	5.4/6.3/7.2/8.1/9.0
820	6/7/8/9/10/12	2.1/2.4/2.8/3.1/3.4/0.0	3.0/3.5/4.0/4.5/5.0/0.0	0.0/0.0/3.9/4.4/4.9/0.0	4.7/5.5/6.3/7.1/7.9
920	7/8/9/10/11/12	2.1/2.5/2.8/3.1/3.4/3.7	3.2/3.6/4.1/4.5/5.0/5.4	0.0/3.5/3.9/4.3/5.2	4.9/5.6/6.3/7.0/7.7/8.5
1020	7/8/9/10/11/12	1.9/2.2/2.5/2.8/3.0/3.3	2.8/3.2/3.7/4.1/4.5/4.9	0.0/3.1/3.5/3.9/4.7	3.8/4.4/5.1/5.7/6.4/7.0/7.6
1220	8/9/10/11/12/14	1.8/2.1/2.3/2.5/2.8/3.2	2.7/3.1/3.4/3.7/4.1/4.8	2.6/2.9/3.3/3.9/0.0	4.2/4.8/5.3/5.8/6.4/7.4