Adakah anda memerlukan rawatan anti-karat semasa pembinaan saluran paip PE?

2025-08-18

Apabila membina saluran paip PE di tapak pengebumian, ramai orang akan mengambil berat tentang keperluan untuk rawatan anti-karat. Malah, saluran paip PE (polietilena) itu sendiri mempunyai kestabilan kimia dan rintangan kakisan yang sangat baik, yang merupakan salah satu kelebihan ketara berbanding saluran paip logam tradisional. Biasanya, apabila saluran paip PE diletakkan di tapak pengebumian, ia tidak memerlukan rawatan anti-karat yang kompleks seperti saluran paip logam. Bahan

PE itu sendiri mempunyai rintangan yang kuat terhadap asid, semburan garam dan kakisan tanah. Ia tidak mudah bertindak balas dengan bahan kimia dalam tanah dan tidak menghasilkan kakisan elektrokimia atau karat seperti saluran paip logam. Ini membolehkan saluran paip PE mengekalkan integriti struktur dan prestasi penghantaran yang baik untuk masa yang lama dalam kebanyakan persekitaran tanah hanya dengan bahannya sendiri.

Walau bagaimanapun, ini tidak bermakna bahawa paip PE boleh "berlari telanjang" sepenuhnya dalam mana-mana persekitaran tertimbus. Dalam beberapa kes khas, langkah perlindungan yang sesuai untuk memastikan keselamatan dan hayat perkhidmatan sistem paip masih perlu dipertimbangkan.

Pertama sekali, jika persekitaran tanah sangat keras, seperti kehadiran kepekatan tinggi bahan kimia yang menghakis, tanah yang sangat berasid atau beralkali yang melebihi julat toleransi bahan PE itu sendiri, maka langkah pengasingan atau perlindungan tambahan untuk saluran paip mungkin diperlukan, seperti penggunaan selongsong khas atau salutan anti-karat (salutan di sini lebih ditujukan kepada kakisan kimia yang melampau daripada kakisan dalam erti kata biasa). Kedua, di beberapa lokasi yang mungkin berisiko kerosakan mekanikal, seperti tanah yang mengandungi banyak batu tajam, kerap mengalami penggelek beban tanah, atau potensi gangguan seperti penggalian pembinaan, untuk mengelakkan dinding luar paip PE daripada tercalar atau rosak akibat tekanan, langkah-langkah seperti meletakkan kusyen (seperti pasir halus, tanah halus), memasang tali amaran, dan perlindungan selongsong biasanya diambil. Walaupun tujuan utama langkah-langkah ini adalah perlindungan fizikal, ia juga secara tidak langsung melindungi saluran paip daripada masalah kakisan yang mungkin disebabkan oleh kerosakan.

Selain itu, saluran paip PE harus mengelakkan pendedahan jangka panjang kepada cahaya matahari dan mencegah penuaan ultraungu semasa pengangkutan, penyimpanan dan proses pembinaan. Walaupun ini bukan sebahagian daripada rawatan anti-karat selepas tertimbus, ia juga merupakan bahagian penting untuk memastikan prestasi saluran paip. Semasa pembinaan tertimbus, adalah penting untuk memastikan kualiti sambungan paip (seperti sambungan cair panas dan elektrofusi). Antara muka berkualiti tinggi boleh menghalang pencerobohan air luar, zarah tanah dan lain-lain dengan berkesan, dan secara tidak langsung menjamin prestasi anti-karat keseluruhan saluran paip.

Kesimpulannya, saluran paip PE, berdasarkan ciri rintangan kakisan yang sangat baik, biasanya tidak memerlukan rawatan anti-karat khusus apabila dibina di bawah persekitaran tanah konvensional. Walau bagaimanapun, dalam menghadapi keadaan kerja khas seperti persekitaran yang sangat menghakis dan risiko kerosakan mekanikal yang tinggi, tinjauan dan penilaian kejuruteraan yang mencukupi harus dilakukan. Jika perlu, langkah perlindungan yang disasarkan seperti memilih bahan mentah PE gred yang lebih tinggi, meningkatkan lapisan pelindung, dan memasang selongsong harus diguna pakai untuk memastikan operasi jangka panjang sistem saluran paip PE yang selamat dan stabil. Pada masa yang sama, operasi pembinaan yang standard dan kawalan kualiti yang ketat juga memainkan peranan yang tidak boleh diabaikan dalam memastikan hayat perkhidmatan saluran paip PE


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