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onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="crtnz3c" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/nbstgy/637229708672080078/3323985.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="xmo5iuo" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價(jià)格要求：</span>面議</p><p><span>所在地：</span>浙江省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>奉化區(qū)HDPE雙壁波紋管價(jià)格便宜</p><p><span>***更新：</span>2020-06-03 02:16:50</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="dszypw3" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">寧波塑通管業(yè)有限公司</a></p><p><span>聯(lián)系人：</span>徐海飛</p><p><span>郵箱: </span>476886350@qq.com</p><p><span>電話: </span>13732189871</p><p><span>傳真: </span>0574_</p><p><span>網(wǎng)址: </span></p><p><span>手機(jī): </span>0574-88108622</p><p><span>地址: </span>環(huán)城南路東段1678號(hào)1520室 </p><p>[當(dāng)前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="ihtyamg" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="gowjlsz" class="box"><p><p> 下管 </p> <p> 下管以施工安全，操作方便為原則，奉化區(qū)HDPE雙壁波紋管價(jià)格便宜，根據(jù)工人操作的熟練度、管材重量、長度、施工環(huán)境、溝槽深淺、吊裝設(shè)備供應(yīng)條件，合理確定下管方法。下管的關(guān)鍵是安全問題，必須由經(jīng)驗(yàn)豐富的工人擔(dān)任指揮。下管時(shí)需采用可靠地吊具，平穩(wěn)下溝，不得與溝壁、槽底激烈碰撞，奉化區(qū)HDPE雙壁波紋管價(jià)格便宜，吊裝時(shí)應(yīng)設(shè)兩個(gè)吊點(diǎn)，嚴(yán)禁穿心吊裝，奉化區(qū)HDPE雙壁波紋管價(jià)格便宜。起吊管子下方嚴(yán)禁站人；人工下管時(shí)，槽內(nèi)工作人員必須躲開下管位置。下管時(shí)，必須要對(duì)溝槽做徹底檢查，包括基地土質(zhì)，基地雜物，溝槽穩(wěn)定性。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="奉化區(qū)HDPE雙壁波紋管價(jià)格便宜" src="http://tyunfile.71360.com/UploadFile/nbstgy/637229708672080078/3323985.jpg"></div><p> 管道穿越鐵路、高等級(jí)道路路堤及有障礙的構(gòu)筑物時(shí)，應(yīng)設(shè)置鋼筋混凝土、鋼、鑄鐵等材料制作的保護(hù)套管，套管內(nèi)徑應(yīng)大于波紋管外徑200mm以上，管道與套管之間的端部處空間用填料填塞。 </p> <p> <br /> </p> <p> <br /> </p> <p> <br /> </p> <p> 管道基礎(chǔ)的埋深低于建(構(gòu))筑物基礎(chǔ)底面時(shí)，管道不得敷設(shè)在建(構(gòu))筑物基礎(chǔ)下地基擴(kuò)散角受壓區(qū)以內(nèi)。 </p> <p> <br /> </p> <p> <br /> </p> <p> <br /> </p> <p> 地下水位高于開挖溝槽槽底高程的地區(qū)，施工時(shí)應(yīng)采取降低地下水位的措施，防止溝槽失穩(wěn)。地下水位應(yīng)降至槽底比較低點(diǎn)以下0.3m～0.5m方可進(jìn)行管道安裝。回填的全部過程中，不得停止降低地下水。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="奉化區(qū)HDPE雙壁波紋管價(jià)格便宜" src="http://tyunfile.71360.com/UploadFile/nbstgy/637229708010791016/4333200.jpg"></div><p> 雙壁塑通管道按定型方式可分為：氣壓定型和真空定型兩種，目前部分廠家采用氣壓定型法設(shè)備，也就是將壓縮空氣通過機(jī)頭模芯支座上的筋條和固定在模芯上的螺塞加到外層管坯內(nèi)腔，使管坯緊貼在模塊上，形成波峰。這種設(shè)備生產(chǎn)出來的制品可以是任意截面，還可以提高波紋管的質(zhì)量，減少凹凸波紋寬度上有厚度誤差，并且減少廢品，還簡化了制品內(nèi)冷卻設(shè)備的結(jié)構(gòu)和機(jī)頭結(jié)構(gòu)。但是壓縮空氣的波動(dòng)使管材的波峰不盡一致，產(chǎn)品的外觀較難控制。 </p><div 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