【文章內(nèi)容簡介】 ameter and wall thickness deviation would never go more than related standard requirement ( Deviation value for ordinary pipe external diameter is 177。10%DN, and wall thickness deviation is+12%，10% ).其中管子的管子質(zhì)量證明書應包括以下內(nèi)容： Besides, quality certificate would includes the following content:（1）. 產(chǎn)品標準號；Product standard No.（2）. 鋼的牌號；Steel No.（3）. 爐罐號、批號、交貨狀態(tài)，重量和件數(shù)； Furnace tank No., lot No., condition of delivery, weight and quantity。（4）. 品種名稱、規(guī)格和質(zhì)量等級；Type name, specification and quality level（5）. 產(chǎn)品標準中規(guī)定的各項檢驗結果。Each item testing findings specified in product standard requirement. Nondestructive Testing of materials 對于設計壓力等于或大于10Mpa的管子，輸送易燃易爆有毒介質(zhì)的管子管件參照SH35012011的規(guī)范，外表面應采用滲透檢測逐根檢查，檢驗結果以I幾為合格。（滲透檢測方案詳見附件3）External surface of pipes with design pressure ≥10Mpa, and inflammableamp。explosiveamp。toxic pipesamp。fittings during transportation shall be conducted by penetrant test one by one as per specification of SH35012011 . Testing findings with I shall be accepted.( see Affix 3 for Penetrant testing plan) Pressure Test of Valve閥門壓力試驗，試驗時間10分鐘，以殼體填料無滲漏為合格。，以閥瓣密封面無泄露為合格。試驗介質(zhì)：潔凈水。Pressure testing of valvea: The test pressure for valve case shall be times of nominal pressure with10 minutes for testing, and no leakage from case stuffing is regarded as eligible. Sealing test pressure shall be performed as times of nominal pressure, and no leakage from seal face of valve clack, it can be regarded as eligible. Clean water is as testing medium.對于檢測合格和不合格的閥門要做出相應明確的標識，分開擺放。Related clear identification for acceptance and unacceptance shall be made respectively, and stacking separately.試驗合格的閥門及時排盡內(nèi)部積水，并吹干，密封面涂防銹油，關閥門，封閉出入口，做好標記，并填寫“閥門試驗記錄”。Qualified valves shall be free water in time, and dry it out, seal face shall be lad with antirust oil, then turn off valves, close inlet and outlet, make identification, and fill inValve Test Record.a. 檢查法蘭密封面及密封墊片，不得有影響密封性能的劃痕、斑點等缺陷。Check the flange facing and sealing gasket. No scratch, mottle or other defects affecting sealing property is allowed.b. 軟墊片的周邊應整齊，墊片尺寸應與法蘭密封面相符，其允許偏差應符合下表規(guī)定：Soft gasket edges would be trim, and dimension should be matched with flange facing with allowable deviation conforming to the following table characteristic:法蘭密封面形式公稱直徑平面型凸凹型榫槽型內(nèi)徑外徑內(nèi)徑外徑內(nèi)徑外徑100及以下+++100以上+++Flange facingNominal diameterFlat faceMFMTGLess than 100+++More than 100+++ Pressure Test of Safety Valve安全閥應按設計給定值進行調(diào)試，依據(jù)國家要求而委托給相關的安全檢測公司。調(diào)試時壓力應穩(wěn)定，每個安全閥啟閉次數(shù)不得少于三次。Safety valve shallbe performed debugging at rated pressure value as per the design. Keep pressure steady during debugging, and each safety valve should be turn on and off at least three times.調(diào)試介質(zhì)：Debugging medium① 工作介質(zhì)為氣體時，調(diào)試介質(zhì)應為空氣或惰性氣體，并應有足夠的貯氣容器。When gas is taken as working medium, debugging medium would be air or inert gas. Besides, sufficient air container should be prepared.② 工作介質(zhì)為液體時，調(diào)試介質(zhì)應為潔凈水。When liquid is taken as working medium, debugging medium shall be clean water.③調(diào)試后應進行鉛封，并及時填寫《安全閥調(diào)試記錄》。Lead sealing would be done after debugging, and Debugging Record of Safety Valve shall be filled out. 焊材檢驗 Welding Materials Inspection (1) 所有焊材應具有質(zhì)量證明書，焊條藥皮不得脫落或有明顯裂紋，焊絲在使用前應清除其表面油污和銹蝕。All welding materials shall be provided with quality certificate. No falling off or obvious fissure of electrode covering, and greasy dirt and rusting on the surface of welding wire shall be eliminated before application.(2) 焊條應符合GB/T511795規(guī)定Welding rod shall conform to GB/T511795 standard.(3) %。Argon purity of argon arc welding shall be no less than %.6管道預制 Pipe Prefabrication。預制前應仔細研究管道布置圖及單線圖，在單線圖上標好焊口號,標明管道的系統(tǒng)號和預制順序，標明各組成件的順序。合理留出現(xiàn)場固定焊口位置、定出自由管段和封閉管段及預制程度，封閉管道應按現(xiàn)場實測后的安裝長度加工。Pipe prefabrication shall be standardized prefabrication. Pipeline drawing and single line drawing shall be read before prefabrication, weld crater on the isometric drawing shall be labeled, pipe system No. and prefab order marked, as well as each assembly elements39。 order. Location for site fastening weld crater shall be reserved, free spool and close spool of pipe segments and prefab degree shall be marked, and close spool shall be processed according to the installation length after site measurement.:管道組成件在施工過程中應妥善保管，不得損壞和混淆色標，或標記應明顯清晰，管子下時必須做好標記移植。碳鋼管件及不銹鋼管件必須分開擺放。Storage for piping ponents and transplant marking: piping ponents should be safekept during construction, no damage or color code confusion is allowed. The marking on the pipe should be distinct, and transplant existing marking on the pipes prior to cutting. Carbon steel pipe fittings shall be kept separately with stainless steel fittings. ，其余預制量在現(xiàn)場預制場地預制。First weld seam of elbow and flange for pipe prefab would be welded before surface treatment, and the other prefab work should be done on the site prefab area. Pipe Cutting a. 小口徑（3″以下）碳鋼管采用切割機切割，然后用磨光機加工坡口；大口徑（3″以上）采用氧—乙炔切割并打磨坡口。不銹鋼管3″以下采用砂輪切割機切割，應用專用砂輪片切割，3″以上采用等離子切割機切割。Small sized pipes shall be cut using cutting machine, and be beveled using grinding machine。 large sized(above 3″) pipes can use oxy acetylene for cutting and the bevel shall be ground. pipe size below 3″ will use abrasive wheel cutting machine with special grinding wheel, and those above 3″ shall use plasmacutting machine.b. 鋼管切割的切口表面應平整，無裂紋、重皮、毛刺、凹凸等缺陷，如有應予以清除。Quality requirements for steel pipe cutting: the cut surface shall be flat without any cracks, laminations, burrs, pitting or other defects, if exist, they shall be removed.c. 切口端面斜偏差△≤外徑的1%，且不得超過3mm。Bevel end slope deviation ≤1% of of pipe, and not more than 3mm.△角尺管子Piped. 將切割下來的管段標上管線號及管段號，并根據(jù)施工圖紙標明所使用的位置。For steep pipes that are already cut, each pipe segment shall be marked with line number and segment number, and their service location shall be marked on construction drawings. chamfering a. 下好料的管段用角向磨光機及內(nèi)磨機加工坡口。 Bevel chamfering of pipe segments after cutting shall be performed by angle grinder or internal grinde