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衡水浩威(wei)新材料有限公司主營(ying)產品:鋼波紋(wen)管、鋼波紋(wen)涵管

遂寧2021年鋼制波紋管涵疑點重重,該如何入手?

瀏覽:13816 發布日期:2021-08-12

鋼波紋管涵(han)(han)也叫波紋(wen)(wen)涵(han)(han)管(guan),是(shi)指鋪埋在公(gong)(gong)路,鐵路下面的(de)涵(han)(han)洞用螺紋(wen)(wen)波紋(wen)(wen)管(guan),它是(shi)由波形(xing)金屬板卷制成(cheng)或用半圓(yuan)波形(xing)鋼片拼(pin)制成(cheng)的(de)圓(yuan)形(xing)波紋(wen)(wen)管(guan),應(ying)用于公(gong)(gong)路,鐵路,小橋,通道,擋(dang)土墻以及各種礦場,巷道擋(dang)墻支護等工程中的(de)涵(han)(han)洞(管(guan))。

2021年鋼制波紋管涵疑點重重,該如何入手?

焊(han)(han)接(jie)時(shi)環(huan)境(jing)溫度應不(bu)低于-20,且應采納防雪(xue)、擋風等措施,減(jian)少焊(han)(han)件的溫度差。焊(han)(han)接(jie)后(hou)的接(jie)頭禁止立即接(jie)觸冰(bing)雪(xue)。冬期拌(ban)和(he)混凝土(tu)時(shi)應嚴(yan)格控(kong)制混凝土(tu)的合作比(bi)和(he)坍落度,集料不(bu)得帶(dai)有(you)冰(bing)雪(xue)和(he)凍(dong)結(jie)團(tuan)塊。投(tou)料前(qian),應先(xian)選用熱水或蒸汽沖洗拌(ban)和(he)機(ji)拌(ban)盤或鼓筒。

鋼波紋管

鋼波紋管

加料次序應(ying)先為(wei)集料、水(shui),稍加拌和后再加入水(shui)泥,且(qie)拌和時(shi)刻(ke)應(ying)比常溫(wen)時(shi)延長50%。對射線(xian)探傷(shang),厚度(du)大于2mm的鋼板焊縫(feng),要求達(da)到(dao)JB4730-94中規(gui)則的II級要求。管坯(pi)壁(bi)厚小于2mm時(shi),射線(xian)探傷(shang)焊縫(feng)缺陷等級應(ying)為(wei)GB16749-97中附錄B規(gui)則的合格(ge)級。

The feeding sequence shall be aggregate and water first, and then cement shall be added after slight mixing, and the mixing time shall be 50% longer than that at room temperature. For radiographic testing, steel plate welds with a thickness greater than 2mm are required to meet the class II requirements of the rules in jb4730-94. When the wall thickness of the pipe blank is less than 2mm, the defect grade of the weld through radiographic inspection shall be qualified according to the rules in Appendix B of gb16749-97.

2021年鋼波紋管涵疑點重重,該如何入手?

鋼波紋管

鋼波紋管

上(shang)色浸透傷(shang)只(zhi)適于(yu)(yu)管(guan)坯厚度不(bu)大于(yu)(yu)2mm的單道焊縫(feng)。檢驗規范(fan)為(wei):不(bu)允(yun)許(xu)有裂紋等線(xian)狀(zhuang)顯(xian)示(shi)、四個或四個以(yi)上(shang)邊距小于(yu)(yu)1.5mm的成(cheng)行(xing)密集圓形(xing)顯(xian)示(shi)、任一(yi)150mm焊縫(feng)長度內五個或五個以(yi)上(shang)直徑大于(yu)(yu)1/2管(guan)坯厚度的隨(sui)機(ji)渙散的圓形(xing)顯(xian)示(shi)。

使(shi)用(yong)壽命(ming)長(chang),鋼制(zhi)(zhi)波(bo)紋管涵是選用(yong)鋼管熱浸鍍鋅,所以(yi)使(shi)用(yong)壽命(ming)長(chang),壽命(ming)為80-100年(nian),在(zai)腐蝕性(xing)特別大的環(huan)境下使(shi)用(yong)時(shi),選用(yong)表(biao)里外表(biao)瀝清附(fu)層的鋼制(zhi)(zhi)波(bo)紋管,可在(zai)原使(shi)用(yong)壽命(ming)基礎(chu)上進步約20年(nian)以(yi)上。施工便(bian)利:波(bo)紋管涵是選用(yong)套筒或法(fa)蘭方(fang)法(fa)銜接,并(bing)且可以(yi)根據需要定制(zhi)(zhi)長(chang)度,即使(shi)對錯熟練工也可以(yi)操作,施工以(yi)少(shao)量的手工操作,可在(zai)短時(shi)刻(ke)內完(wan)結(jie),既方(fang)便(bian)又便(bian)利。

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