內(nèi)襯（覆）不銹鋼復(fù)合鋼管管道工程技術(shù)規(guī)程

1.0.2本規(guī)程適用于新建、擴(kuò)建和改建的市政給水排水、建筑給水排水、工業(yè)給水排水、消防給水排水和空調(diào)水系統(tǒng)工程中采用內(nèi)襯（覆）不銹鋼復(fù)合鋼管管道系統(tǒng)1.0.3市政給水排水、建筑給水排水、工業(yè)給水排水、消防給水排水和空調(diào)水系統(tǒng)工程中采用內(nèi)襯（覆）不銹鋼復(fù)合鋼管管道系統(tǒng)的程規(guī)定外，尚應(yīng)符合國(guó)家現(xiàn)行有關(guān)標(biāo)準(zhǔn)和現(xiàn)行中國(guó)工程建設(shè)標(biāo)準(zhǔn)化協(xié)會(huì)有關(guān)標(biāo)準(zhǔn)的1.0.4城鎮(zhèn)燃?xì)夤艿?、采暖蒸汽管道、成品油及空氣輸送管道系統(tǒng)工程中采用內(nèi)襯（覆）不銹鋼復(fù)合鋼管管道系統(tǒng)的設(shè)計(jì)、施工及驗(yàn)收除可采用本規(guī)程規(guī)定，并應(yīng)符合國(guó)家現(xiàn)行有關(guān)標(biāo)準(zhǔn)和現(xiàn)行中國(guó)工程建設(shè)標(biāo)又稱雙金屬機(jī)械復(fù)合鋼管，將不銹鋼管襯入碳鋼管內(nèi)，在機(jī)械壓力作用下，在又稱雙金屬冶金復(fù)合鋼管，采用冶金方式，使內(nèi)層不銹鋼層和外層碳鋼層在結(jié)2.0.3外包鋼增強(qiáng)不銹鋼管reinforcedstainlesssteelp依靠外層碳鋼管提高機(jī)械強(qiáng)度，內(nèi)層不銹鋼管提高防腐能力的內(nèi)襯不銹鋼復(fù)合內(nèi)覆在基層（基管）并與基層（基管）熔合為一體的可滿足可滿足飲水衛(wèi)生安2.0.7不銹鋼復(fù)合鋼制對(duì)焊管件stainlesssteelcompositesteelbuttweldingpipe2.0.8內(nèi)襯不銹鋼復(fù)合鋼制對(duì)焊管件stainlesssteellinedsteelbuttweldingpipe2.0.9內(nèi)覆不銹鋼復(fù)合鋼制對(duì)焊管件stainlesssteelcladsteelbuttweldingpipe3.1.1內(nèi)襯（覆）不銹鋼復(fù)合鋼管應(yīng)符合1用于建筑生活給水系統(tǒng)時(shí)，應(yīng)符合現(xiàn)行行業(yè)標(biāo)準(zhǔn)《內(nèi)襯不銹鋼復(fù)合鋼管》2用于工業(yè)給水排水管道時(shí)，應(yīng)符合現(xiàn)行國(guó)家標(biāo)準(zhǔn)《流體輸送用耐蝕合金復(fù)合3用于城鎮(zhèn)燃?xì)夤艿?、成品油及空氣輸送管道時(shí)，應(yīng)符合現(xiàn)行國(guó)家標(biāo)準(zhǔn)《流體輸送用耐蝕合金復(fù)合鋼管》GB/T31940、現(xiàn)行行業(yè)標(biāo)準(zhǔn)《內(nèi)覆或襯里耐腐蝕合金復(fù)GB/T31940、現(xiàn)行國(guó)家標(biāo)準(zhǔn)《石油天然氣工業(yè)用內(nèi)覆或襯里耐腐蝕合金復(fù)合鋼管》3.1.2采用焊接連接的不銹鋼復(fù)合管件應(yīng)符合現(xiàn)行3.1.3用于生活飲用水和管道直飲水工程中的管材、管件和密封件還應(yīng)1管材、管件和橡膠密封件應(yīng)符合現(xiàn)行國(guó)家標(biāo)準(zhǔn)《生活飲用水輸配水設(shè)備及防2密封件還應(yīng)符合現(xiàn)行國(guó)家標(biāo)準(zhǔn)《生活飲用水管道系統(tǒng)用橡膠密封件》GB/T28604或現(xiàn)行國(guó)家標(biāo)準(zhǔn)《橡膠密封件給、排水管3.2.1內(nèi)襯（覆）不銹鋼復(fù)合鋼管的公稱尺寸、公稱外徑、復(fù)合管和復(fù)表3.2.1內(nèi)襯（覆）不銹鋼復(fù)合鋼管的公稱尺寸、公稱外 —1公稱尺寸不大于DN150的復(fù)合鋼管的最小公稱壁厚，應(yīng)符合《低壓流體輸4對(duì)于埋地使用的內(nèi)襯（覆）不銹鋼復(fù)合鋼管確定壁厚后，還應(yīng)按現(xiàn)行國(guó)家標(biāo)準(zhǔn)《給水排水工程管道結(jié)構(gòu)設(shè)計(jì)規(guī)范》GB50332、現(xiàn)行協(xié)會(huì)標(biāo)準(zhǔn)《給水排水工程埋4系統(tǒng)壓力大于2.5MPa，應(yīng)選用無(wú)縫鋼管或符合現(xiàn)行國(guó)家標(biāo)準(zhǔn)《石油天然氣ReL（MPa）Rm（MPa）D≤168.3mmD＞168.3mm化學(xué)成分（質(zhì)量分?jǐn)?shù)%）CPSNi——— —L360*化學(xué)成分（質(zhì)量分?jǐn)?shù)%）CPSNiN 3.2.8界面剪切試驗(yàn)和夾持力試驗(yàn)的試驗(yàn)方法及要求應(yīng)符合1內(nèi)襯不銹鋼復(fù)合鋼管的試驗(yàn)方法及要求應(yīng)符合現(xiàn)行行業(yè)標(biāo)準(zhǔn)《內(nèi)襯不銹鋼復(fù)2內(nèi)覆不銹鋼復(fù)合鋼管的試驗(yàn)方法應(yīng)符合現(xiàn)行國(guó)家標(biāo)準(zhǔn)《復(fù)合鋼板力學(xué)及工藝1內(nèi)螺紋管件應(yīng)采用內(nèi)襯不銹鋼可鍛鑄鐵管件。其外坯管件的材料、鍍鋅層dtL??1dtL2342外螺紋管件（內(nèi)接頭）可采用不銹鋼鑄造管件，其應(yīng)符合現(xiàn)行國(guó)家標(biāo)準(zhǔn)《低3.3.3管道工程中配套使用的內(nèi)襯不銹鋼溝槽式復(fù)合管件和內(nèi)襯不銹鋼1外坯管件的標(biāo)記、結(jié)構(gòu)尺寸、基本參數(shù)、殼體材料、耐壓強(qiáng)度等應(yīng)符合現(xiàn)行2消防使用的外坯管件的標(biāo)記、結(jié)構(gòu)尺寸、基本參數(shù)、殼體材料、耐壓強(qiáng)度等4配套連接的所使用的卡箍應(yīng)符合現(xiàn)行國(guó)家標(biāo)準(zhǔn)《卡箍式柔性管接頭型式與dt包裝、運(yùn)輸、貯存等應(yīng)符合現(xiàn)行協(xié)會(huì)標(biāo)準(zhǔn)《不銹鋼復(fù)合鋼制對(duì)焊管件》T/CECS2采用復(fù)層材質(zhì)的不銹鋼材質(zhì)的管件進(jìn)行對(duì)焊管件使用時(shí)，其應(yīng)符合現(xiàn)行國(guó)家標(biāo)準(zhǔn)《鋼制對(duì)焊管件類型與參數(shù)》GB/T12459和《鋼制對(duì)焊管件技術(shù)規(guī)范》2特殊需求法蘭的設(shè)計(jì)、制造等技術(shù)要求可按照其他現(xiàn)行國(guó)家行業(yè)標(biāo)準(zhǔn)的規(guī)定3.4.2平焊法蘭和平焊環(huán)與內(nèi)襯（覆）不銹鋼復(fù)合鋼管的蘭和平焊環(huán)，在法蘭內(nèi)孔和管體外層碳鋼管端面應(yīng)采用不銹鋼焊條或焊絲進(jìn)行封dhXt3.4.3設(shè)計(jì)工作壓力大于41采用加襯不銹鋼的鋼制帶頸螺紋法蘭2采用加襯不銹鋼的可鍛鑄鐵制帶頸螺紋法蘭。其外坯法蘭應(yīng)滿足現(xiàn)行國(guó)家標(biāo)準(zhǔn)《帶頸螺紋鑄鐵管法蘭》GB/T17241.3的規(guī)定，并且法蘭密封面端應(yīng)具有能夠添1采用加襯不銹鋼的帶頸法蘭。其外坯管件應(yīng)滿足現(xiàn)行國(guó)家標(biāo)準(zhǔn)《溝槽式管路3.5.1對(duì)埋地使用的內(nèi)襯（覆）不銹鋼復(fù)合鋼管管道系統(tǒng)的外防腐措施1采用涂塑或覆塑層防腐的，塑層材料和塑層厚度應(yīng)符合現(xiàn)行國(guó)家標(biāo)準(zhǔn)《流體3采用熔結(jié)環(huán)氧粉末防腐的，塑層材料和塑層厚度應(yīng)符合《鋼質(zhì)管道熔結(jié)環(huán)氧4采用石油瀝青涂料、環(huán)氧煤瀝青涂料、環(huán)氧樹(shù)脂玻璃進(jìn)行鋼管外防腐的，涂層材料和涂層厚度應(yīng)符合現(xiàn)行國(guó)家標(biāo)準(zhǔn)《給水排水管道工程施工及驗(yàn)收規(guī)范》GB5涂覆前應(yīng)對(duì)鋼管內(nèi)外表面進(jìn)行拋（噴）射除銹。處理后的表面應(yīng)無(wú)鐵銹、焊3.5.2對(duì)室內(nèi)使用的內(nèi)襯（覆）不銹鋼復(fù)合鋼管外表面宜采用鍍鋅防腐4.1一般規(guī)定4.1.1管道系統(tǒng)設(shè)計(jì)工作壓力和設(shè)計(jì)工作溫度的確定、水力設(shè)計(jì)、4.1.2管道系統(tǒng)設(shè)計(jì)工作壓力和設(shè)計(jì)工作溫度的確定，壁厚設(shè)計(jì)并4.1.3內(nèi)襯（覆）不銹鋼復(fù)合鋼管可采用螺紋連接、溝槽連接、法4.2設(shè)計(jì)工作壓力和設(shè)計(jì)工作溫度件4.2.3焊接連接管件的設(shè)計(jì)應(yīng)符合現(xiàn)行協(xié)基坯管件符合《可鍛鑄鐵管路連接件》GB/T4.3水力計(jì)算4.3.1室外給水管道水力計(jì)算應(yīng)符合現(xiàn)行國(guó)家標(biāo)準(zhǔn)《室外給4.3.2室外排水管道的水力計(jì)算應(yīng)符合現(xiàn)行國(guó)家標(biāo)準(zhǔn)《室外排4.3.3建筑給水排水管道水力計(jì)算應(yīng)符合現(xiàn)行國(guó)家標(biāo)準(zhǔn)《建筑給i=105C-1.85d-4.87qg1.854.3.6消防給水管道水力計(jì)算應(yīng)符合現(xiàn)行國(guó)家標(biāo)準(zhǔn)《消防給水及消4.4管道布置與敷設(shè)4.4.1室外埋地管道管頂最小4.4.2建筑室內(nèi)給水管道的布置應(yīng)符合現(xiàn)行國(guó)家標(biāo)準(zhǔn)《建筑給4.4.3室內(nèi)管道穿越樓板、梁和墻時(shí)，管道產(chǎn)生的荷載應(yīng)計(jì)入載。管道穿越混凝土、砌體等承重構(gòu)件時(shí)，應(yīng)設(shè)置保護(hù)不宜穿越建筑物之間的沉降縫。管道接頭不得埋設(shè)在承重1室外明露或室內(nèi)可能冰凍的場(chǎng)所安裝后應(yīng)進(jìn)行保溫，并在保溫層外加設(shè)金屬2室內(nèi)明露熱水管道應(yīng)采取相應(yīng)的保溫絕熱措施。對(duì)有可能結(jié)露的部位宜采取2管道的伸縮補(bǔ)償可選用曲撓橡膠接頭、波紋伸縮節(jié)等補(bǔ)償器，后在分流端設(shè)3熱水水平干管與水平支管連接、水平干管與立管連接、立管與每層熱水支管5.1一般規(guī)定2對(duì)安裝所需管材、管件、焊材、儀表密封圈等配件已核對(duì)產(chǎn)品合格證、質(zhì)量保證書(shū)、規(guī)格型號(hào)、品種和數(shù)量，并進(jìn)行外5.1.2施工人員應(yīng)經(jīng)內(nèi)襯（覆）不銹鋼復(fù)合鋼管管道安裝的5.1.4內(nèi)襯（覆）不銹鋼復(fù)合鋼管施工應(yīng)符合《給排水管道5.1.5管道穿越樓板、墻壁、屋面及嵌墻敷設(shè)時(shí)，應(yīng)配合土建2管道嵌墻內(nèi)暗敷時(shí)，管槽寬度可5.2螺紋連接2螺紋應(yīng)采用圓錐形管螺紋且符合現(xiàn)行國(guó)家標(biāo)準(zhǔn)《55°密封管螺紋第2部分：3螺紋加工（套絲）應(yīng)采用自動(dòng)套絲機(jī)，采用潤(rùn)滑油潤(rùn)滑，并應(yīng)采用標(biāo)準(zhǔn)螺紋5.2.3管端的螺紋清理加工后，應(yīng)進(jìn)行防腐、密封處理，宜采纏繞螺紋或液體生料帶涂覆螺紋或兩種組合的N×m在確認(rèn)配件接口已插入內(nèi)襯（覆）不銹鋼復(fù)合鋼管后，用管鉗進(jìn)行管子與管件的連3管材與給水栓、衛(wèi)生器具及設(shè)備附件連接時(shí)，應(yīng)采用不銹鋼或黃銅材質(zhì)的外螺紋接頭進(jìn)行過(guò)渡。過(guò)渡后，外螺紋接頭在依次連接5.3溝槽連接連接。管道系統(tǒng)的工作壓力不得大于溝槽式管接頭的公1管端溝槽軋制加工過(guò)程應(yīng)符合現(xiàn)行協(xié)會(huì)標(biāo)準(zhǔn)《溝槽式連接管道工程技術(shù)套，硅橡膠密封套、堆焊等，不銹鋼密封套在溝槽加工后應(yīng)與管端固定成為一體，不應(yīng)脫落。不銹鋼密封鋼套可由不銹鋼和密封圈組成。防腐措施應(yīng)能將整個(gè)管端與水接觸部位包裹，徹底解決基管端面與水接觸而產(chǎn)生電化學(xué)腐蝕的問(wèn)題。連接所用5.4法蘭連接2現(xiàn)場(chǎng)配接法蘭時(shí)，應(yīng)采用連接方式轉(zhuǎn)換的方式進(jìn)行，符合本技術(shù)規(guī)程3.4.44連接法蘭的螺栓應(yīng)使用相同規(guī)格，而且安裝方向應(yīng)一致，螺栓應(yīng)從鋼管對(duì)稱工廠進(jìn)行制作，在施工現(xiàn)場(chǎng)一次性進(jìn)行安裝。不應(yīng)在施工現(xiàn)場(chǎng)在復(fù)合鋼管上焊接法5.5焊接連接//5.5.3焊接坡口應(yīng)采用機(jī)械加工方法，出廠管端坡口應(yīng)滿足30°~35°,對(duì)接焊65°±5°5) ) 321115.5.4焊前應(yīng)采用機(jī)械方法及有機(jī)溶劑（如丙酮、酒精、香和焊接坡口兩側(cè)應(yīng)不小于20mm范圍內(nèi)的油污、銹跡、氧化膜及其他污物。鋼管對(duì)層材料的填充焊絲或焊條，都應(yīng)為焊接復(fù)層材料對(duì)應(yīng)的焊絲和焊條材料。應(yīng)采用比5相同強(qiáng)度等級(jí)的碳素鋼、低合金鋼相焊的焊接材料應(yīng)保證焊縫金屬的力學(xué)性6對(duì)于有防晶間腐蝕要求的焊接接頭應(yīng)采用熔敷金屬中含有穩(wěn)定化元素Ti、5.5.7當(dāng)設(shè)計(jì)施工技術(shù)條件要求進(jìn)行焊接工藝評(píng)定時(shí)，在焊度不宜大于150℃;對(duì)奧氏體-鐵素體雙相不銹鋼，復(fù)層焊接層間溫度不宜大于1封焊時(shí)應(yīng)注意觀察熔池，如果發(fā)現(xiàn)熔池由里往外冒氣泡，或是發(fā)生爆裂時(shí)，1先焊復(fù)層，再焊過(guò)渡層，最后焊基層。對(duì)于大口徑管道，焊工在管內(nèi)進(jìn)行對(duì)對(duì)管口進(jìn)行加熱，使其水蒸氣和空氣盡可能排出，然鋼基層。在打底焊結(jié)束后，采用不銹鋼刷或角向5.5.11打底焊（根焊）和內(nèi)蓋2焊接電流應(yīng)合適，一般控制在80A～100A；過(guò)小的電流容易造成未焊透，3對(duì)于打底焊的缺陷，通常需要將焊道磨穿才能將缺陷清除。如果打底焊返修1過(guò)渡層焊接時(shí)，過(guò)小的電流容易造成層間未焊透及熔敷金屬合金濃度梯度過(guò)大，過(guò)大的電流易將根部或封焊層燒穿；焊接過(guò)渡層時(shí)，應(yīng)采用較小直徑的焊條或2過(guò)渡層的厚度不小于2mm，過(guò)渡層焊接時(shí)可采用復(fù)層焊接材料或打底焊材5.5.13外蓋面焊縫控制焊縫余高5.5.17與管道連接的彎頭、三通、異徑管（4焊接連接時(shí)，管端在出廠時(shí)應(yīng)進(jìn)行封焊或堆焊，且對(duì)接焊縫內(nèi)壁不能露出碳6對(duì)內(nèi)襯（覆）不銹鋼復(fù)合鋼管主管需連接支管時(shí)，應(yīng)采用能確保復(fù)合管端面7管道系統(tǒng)的支承體、緊固件應(yīng)采用熱浸鍍鋅金屬件或碳鋼件加防腐漆；溝槽5.6.2運(yùn)輸和安裝過(guò)程中損壞的防腐層、管道連接部位聯(lián)聚乙烯熱收縮帶、輻射交聯(lián)聚乙烯補(bǔ)傷片、無(wú)溶劑液體涂料、聚合物膠粘帶或彈6.0.1內(nèi)襯（覆）不銹鋼復(fù)合鋼管管道工程應(yīng)按現(xiàn)行國(guó)家標(biāo)6.0.2中間驗(yàn)收、竣工驗(yàn)收前施工單位應(yīng)進(jìn)行自檢。驗(yàn)收時(shí)1焊縫無(wú)損檢測(cè)按照現(xiàn)行國(guó)家標(biāo)準(zhǔn)《金屬熔化焊焊接接頭射線照相》GB/T2焊縫的無(wú)損檢測(cè)的檢測(cè)范圍及合格標(biāo)準(zhǔn)，應(yīng)符合設(shè)計(jì)圖紙和技術(shù)條件規(guī)定，3試驗(yàn)管段所有敞口應(yīng)封閉，不得有滲漏水現(xiàn)象；試驗(yàn)管段注滿水后，宜在不6.0.5管道試壓合格后，應(yīng)將管道系統(tǒng)內(nèi)的存水放空，放空時(shí)應(yīng)開(kāi)啟進(jìn)氣孔，并進(jìn)行管道清洗。輸送生活飲用水和飲用凈水的管道還應(yīng)消毒。消毒后的管道通水水質(zhì)12341234過(guò)的鋼材表面和全面清除原有涂層后的鋼材表面的銹蝕等級(jí)和處理等級(jí)》GB/T8923.1的規(guī)定，目測(cè)或樣板對(duì)比評(píng)定鋼管涂裝前表面除銹質(zhì)量。目測(cè)或用五倍放大D——鋼管的公稱外徑，單位為毫米（mmK——不同標(biāo)準(zhǔn)規(guī)定的許用應(yīng)力和上屈服強(qiáng)度的比例，詳見(jiàn)表A.1-2；H——高溫下許用應(yīng)力與室溫下許用力相比的下降系數(shù)，詳見(jiàn)表A.1-3。下屈服強(qiáng)度*ReL（MPa）--D>508mm表A.1-3高溫下許用應(yīng)力與室溫下許用力相比的下降系數(shù)H下降系數(shù)H1≤200℃≤300℃含Cl-水含Cl-水— 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