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A333應(yīng)用溫度-45℃至-196℃材料類型16Mn、10MnDG、09DG、09Mn2VDG、06Ni3MoDG、ASTM A333-Grade系列目錄1生產(chǎn)工藝2應(yīng)用領(lǐng)域3技術(shù)特性4質(zhì)量控制生產(chǎn)工藝播報編輯低溫鋼管生產(chǎn)工藝主要有冷拔和熱軋兩種工藝 [1]。應(yīng)用領(lǐng)域播報編輯該管材主要應(yīng)用于液化天然氣（LNG）輸送管線、液氮儲運設(shè)備、乙烯裂解裝置等低溫工業(yè)場景。在液化天然氣接收站中，需承受-162℃低溫介質(zhì)，要求管材具備抗低溫脆斷能力。技術(shù)特性播報編輯的合金元素配比需優(yōu)化碳、錳含量，同時添加鎳、鉬等元素提升低溫穩(wěn)定性。管材出廠前需進(jìn)行-100℃低溫條件下的拉伸試驗，確保屈服強度與延伸率符合標(biāo)準(zhǔn)要求。壁厚公差控制嚴(yán)于常規(guī)無縫鋼管，冷拔工藝產(chǎn)品公差可達(dá)±5%，熱軋工藝產(chǎn)品公差通常控制在±10%以內(nèi)。內(nèi)表面需進(jìn)行噴丸處理以減少介質(zhì)流動阻力，外表面采用環(huán)氧粉末涂層增強耐腐蝕性。質(zhì)量控制播報編輯制造商需建立低溫沖擊試驗室，按批次抽樣進(jìn)行落錘撕裂試驗（DWTT）。對于厚度超過20mm的管材，需增加Z向性能測試以防止層狀撕裂。成品管需逐支進(jìn)行超聲波探傷檢測，缺陷回波幅度不得超過標(biāo)準(zhǔn)規(guī)定值。管端需加工坡口并實施保護(hù)措施，確保現(xiàn)場焊接時的熔合質(zhì)量。新手上路成長任務(wù)編輯入門編輯規(guī)則本人編輯我有疑問內(nèi)容質(zhì)疑在線客服官方貼吧意見反饋投訴建議舉報不良信息未通過詞條申訴投訴侵權(quán)信息封禁查詢與解封?2025?Baidu?使用百度前必讀?|?百科協(xié)議?|?隱私政策?|?百度百科合作平臺?|?京ICP證030173號?京公網(wǎng)安備11000002000001號window.PAGE_DATA= 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