【正文】 pipe and machine 固定管道與開孔機(jī) Fix the drilling machine in the position with chain, adjustment made to let the pipe horizontal 用鏈條將開孔機(jī)固定于管道預(yù)定開孔位置處，用水平尺調(diào)整管道至水平； 3 drilling 開孔 Start drilling, operate control wheel to drill a hole on the pipe 啟動(dòng)電機(jī)轉(zhuǎn)動(dòng)鉆頭，操作設(shè)置在支柱頂部的手輪，緩慢地下壓轉(zhuǎn)動(dòng)手輪，完成鉆頭在鋼管上的開孔作業(yè)； 4 clean 清理 Clean the fragment, burnish the burr, paint with anticorrosion coat 清理鉆落的碎片和開孔部位的殘?jiān)蒙拜啓C(jī)打磨孔口的毛刺，再刷兩道防銹漆； 5 Install mechanical tee 安裝機(jī)械三通 Put tee on the hole, insert gasket and tight screw 將機(jī)械三通置于鋼管孔洞上，機(jī)械三通、橡膠密封圈與孔洞間隙應(yīng)保持均勻，擰緊螺栓。壓槽時(shí)應(yīng)保持持續(xù)漸進(jìn)，槽深應(yīng)符合下表要求： The standard depth and tolerance: 鍍鋅鋼管溝槽標(biāo)準(zhǔn)深度及公差要求： NPS 公稱直徑（ mm） Groove to pipe end 溝槽至管端尺寸 (mm） depth 溝槽深度（ mm） width 溝槽寬度（ mm） DN100 DN125 DN150 DN200 5) Clamp joint 溝槽式卡箍管件安裝 Finished groove fitting are pleased to be used. 鍍鋅鋼管溝槽連接 優(yōu)先采用成品溝槽式 管件； Machine made pipe end, and tolerance allowed: when pipe size bigger than 100mm, tolerance no bigger than 1mm, when pipe size bigger than 125mm, Page 15 of 39 Technical Proposal 技術(shù)標(biāo) tolerance no bigger than . 采用機(jī)械截管，截面應(yīng)垂直軸心，允許偏差：管徑不大于 100mm時(shí)，偏差不大于 1mm；管徑大于 125mm時(shí)，偏差不大于 。 旋轉(zhuǎn)定位螺母，調(diào)整好壓輪行程，將對(duì)應(yīng)管徑塞尺塞入標(biāo)尺確定滾槽深度； 壓槽時(shí)先把液壓泵上的卸壓手柄順時(shí)針擰緊，再操作液壓手柄使上滾輪壓住鋼管。 Pipe groove 管道壓槽 Clamp coupling are used for galvanized pipe DN≥ 100mm 管徑 DN≥ 100mm的鍍鋅鋼管采用溝槽連接 1) Pipe groove make statement 管道壓槽原理 Groove of galvanized pipe is made by special pipe groove machine, 管道壓槽由專業(yè)壓槽機(jī)制作 The match roll are bined by press and roll wheel, the groove width and pipe edge length will be got through assembly rolls units participation, the depth of groove controlled by positioning ruler, slowly press, one grade after pipe rolled on circle to ensure no impact to the pipe roundness and equal depth of groove. Page 10 of 39 Technical Proposal 技術(shù)標(biāo) 壓 槽 原 理 圖 鍍鋅鋼管的溝槽是采用專用鋼管壓制而成，壓槽機(jī)配輪由壓輪和滾輪配對(duì)組成，溝槽寬度及端頭長(zhǎng)度均由配輪組合決定，壓輪下壓的深度由溝槽深度定位尺控制，其下壓過程依次實(shí)現(xiàn)在滾輪啟動(dòng)和管體旋轉(zhuǎn)中，旋轉(zhuǎn)一周、下壓一級(jí)，以保證下壓過程中不破壞管體真圓度或造成溝槽深淺不一。 Galvanized steel pipes 鍍鋅鋼管的安裝 All the galvanized steel pipes with no more than DN80 must be connected with silk screen. The fittings must also be galvanized fittings. 鍍鋅鋼管的安裝 , 所有小于等于 DN80 的鍍鋅管，必須絲接，所用配件必須是鍍鋅配件。 when installed, the surroundings of tank shall be provided with access passage with width of no less than . The distance between the top of gas pressure tank and floorslab or girder bottom shall not be less than . 本工程消防、噴淋系統(tǒng)設(shè)氣壓罐。 the distance between valve and box side is 140mm, and that between valve and internal surface after box is 100mm。 firstly big pipes, and then small pipes。 2) The outdoor fire hydrant and fire adapter must be installed strictly according to the requirements of fire design and construction amp。 the control valve on suction pipe shall be installed after fixing fire pump on the foundation. The diameter shall not be less than the diameter of suction mouth of fire pump。 the overflow mouth of blowoff valve and safety valve shall also be well connected with other waterways of sewer so as to draw off the remained water after using up. 安裝時(shí)，按圖標(biāo)各部位和尺寸進(jìn)行安裝 (放水閥水平延長(zhǎng)至開啟方便處 )，使用消防水泵接合器的消防給水管路，應(yīng)與生活用水管道分開，以防污染生活用水 (如無條件分開，也應(yīng)保證使用時(shí)斷開 )；各零部件的連接及與地下管道的連接均需密封，以防滲漏。反之，因用力不夠上不緊。 檢查壓槽機(jī)使用的驅(qū)壓輪和兩個(gè)下滾輪（驅(qū)動(dòng)輪）。如不符合規(guī)定，再微調(diào)，進(jìn)行第二次壓槽時(shí)，再一次檢查溝槽尺寸，以達(dá)到規(guī)定的標(biāo)準(zhǔn)尺寸 檢查管子斷面與管子軸線是否垂直，最大誤差不超過 2mm，去掉斷口殘留物，磨平管口，確保密封面無損傷。 7) Mechanical cross installation 機(jī)械四通安裝 Page 19 of 39 Technical Proposal 技術(shù)標(biāo) Installation sketch 機(jī)械四通安裝示意圖 Symbols: 1 galvanize pipe 3 drill for mechanical cross 符 號(hào)說明： 1鍍鋅鋼管； 2機(jī)械四通開孔 In order to enhance the drill precision to ensure the installation quality, make the two。 with the motorized wheel, smoothly and make the depth of groove meet the requirement below: 用壓槽機(jī)壓槽時(shí)，管道應(yīng)保持水平，且與壓槽機(jī)驅(qū)動(dòng)輪擋板呈 90176。下壓手動(dòng)液壓泵使?jié)L輪頂?shù)焦茏油獗凇? Various kinds of fillers shall be selected for connection of pipe screw thread according to pumped medium of pipe. The mon fillers are hemp lead oil and raw material belt which shall be correctly used when install