[{"data":1,"prerenderedAt":187},["ShallowReactive",2],{"blog-pipe-pile-release-agent-application-guide-en":3},{"id":4,"attributes":5},460,{"content":6,"createdAt":7,"updatedAt":8,"publishedAt":9,"slug":10,"title":11,"summary":12,"views":13,"locale":14,"cover":15,"cate_blog":32,"products":42,"seo":178,"author":184,"localizations":185},">## Introduction\n>Prestressed Concrete Pipe Piles (PHC Pipe Piles) are widely used in building foundations, bridges, ports, and municipal engineering due to their high load-bearing capacity, excellent durability, and efficient installation. As the precast concrete industry continues to pursue higher quality, lower production costs, and more sustainable manufacturing, manufacturers are paying increasing attention to every stage of the production process that affects product quality.\n>\n>From applying the release agent to steel molds, to concrete placement, prestressing, centrifugal casting, steam curing, and final demolding, every step influences the appearance, production efficiency, and overall manufacturing cost of concrete pipe piles. Although often regarded as an auxiliary material, the concrete release agent plays a critical role throughout the entire production process by ensuring smooth demolding, protecting steel molds, and improving the surface quality of finished concrete.\n>\n>This article explains the manufacturing process of prestressed concrete pipe piles while sharing practical application experience with water-based release agents for pipe pile production.\n\n---\n\n## 1. The First Step in Pipe Pile Production: Applying the Release Agent\n\nBefore production begins, the steel molds must be properly prepared.\n\nA high-quality release agent forms a uniform and continuous protective film on the mold surface, reducing the adhesion between concrete and steel while minimizing mold wear and corrosion.\n\nToday, more manufacturers are switching to [water-based release agents](https:\u002F\u002Fwww.chinareleaseagent.com\u002Fproduct\u002Fwater-based-precast-concrete-rel) specifically designed for concrete pipe pile production.\n\nCompared with conventional oil-based products, high-performance water-based release agents offer several advantages:\n\n- Form a uniform release film for consistent demolding performance;\n- Reduce oil buildup and mold contamination;\n- Improve the surface finish of concrete products;\n- Lower VOC emissions;\n- Can be diluted with water, reducing overall operating costs.\n\n### Recommended Dilution Ratios for Pipe Pile Molds\n\nBased on our practical application experience, the upper and lower mold sections perform differently during production. Therefore, different dilution ratios are recommended.\n\n| Mold Section | Recommended Dilution Ratio | Recommendation |\n| --- | --- | --- |\n| Initial Trial | 15:1–25:1 | Verify release performance first |\n| Lower Mold | Up to 35:1 | Increase dilution if demolding remains stable |\n| Upper Mold | 6:1–10:1 | Lower dilution is recommended because the upper mold is more prone to sticking |\n\nDuring application, use a spray gun to apply a thin, continuous, and uniform coating over the mold surface, avoiding missed areas or excessive application.\n\n![Closing the upper steel mold during prestressed concrete pipe pile manufacturing](https:\u002F\u002Fassets.chinareleaseagent.com\u002Fblog_0724_5_4d71d7dc20.webp)\n\n---\n\n## 2. Concrete Placement and Mold Assembly\n\nAfter the release agent has been applied, concrete placement begins.\n\nConcrete is typically placed using a movable distribution machine following the sequence of \"center – both ends – center\" to ensure even distribution throughout the mold.\n\nThe mold is then assembled.\n\n\nDuring mold assembly, particular attention should be paid to:\n\n- Ensuring the mold edges are clean;\n- Confirming the retaining rings are correctly positioned;\n- Tightening all bolts in the proper sequence;\n- Verifying that the mold is completely closed.\n\nThese details directly affect the quality of centrifugal casting and final demolding.\n\n>\n\n![Concrete placement process in prestressed concrete pipe pile production using a movable distribution machine](https:\u002F\u002Fassets.chinareleaseagent.com\u002Fblog_0724_2_a23602fd9f.webp)\n\n---\n\n## 3. Prestressing\n\nOnce the mold has been assembled, the prestressing process begins.\n\nDuring tensioning, it is important to ensure that:\n\n- The hydraulic jack is properly aligned with the center of the mold;\n- Tensioning is carried out smoothly and gradually;\n- The specified prestressing force is maintained before anchoring;\n- Tensioning records are kept for every pipe pile.\n\nProper prestressing not only determines the structural performance of the pipe pile but also influences the subsequent centrifugal casting process.\n\n\n>\n![Prestressing process during prestressed concrete pipe pile manufacturing](https:\u002F\u002Fassets.chinareleaseagent.com\u002Fblog_0724_6_71a20e9cd4.webp)\n\n---\n\n## 4. Centrifugal Casting\n\nCentrifugal casting is one of the most critical stages in pipe pile manufacturing.\n\nThe entire centrifugal process is generally divided into five stages.\n\n| Centrifugal Stage | Function |\n| --- | --- |\n| Low Speed | Restores the flowability of fresh concrete |\n| Low-Medium Speed 1 | Begins distributing concrete evenly along the mold wall |\n| Low-Medium Speed 2 | Continues concrete distribution for greater uniformity |\n| Medium Speed | Reduces segregation while improving density and impermeability |\n| High Speed | Fully compacts the concrete to produce a high-strength pipe pile |\n\n\n\nThe complete centrifugal process is typically controlled within approximately 15 minutes.\n\nSecondary centrifuging should be avoided, and equipment operation should be continuously monitored throughout the process.\n\n---\n\n## 5. Atmospheric Steam Curing\n\nAfter centrifugal casting, the pipe piles enter the atmospheric steam curing stage.\n\nThe curing process generally consists of four phases:\n\n- Pre-curing;\n- Heating;\n- Constant-temperature curing;\n- Cooling.\n\n\n\nProper control of the heating rate and holding temperature helps ensure stable strength development while minimizing the risk of cracking.\n\n---\n\n## 6. Demolding—The Most Direct Test of Release Agent Performance\n\nDemolding begins after steam curing is completed.\n\nThis is the most direct stage for evaluating the performance of a release agent.\n\nA high-quality water-based release agent helps achieve:\n\n- Smooth demolding;\n- No sticking;\n- No edge chipping;\n- No visible oil stains;\n- Uniform concrete surface color;\n- Clean steel molds.\n\n\n>\n![Demolding prestressed concrete pipe piles after steam curing](https:\u002F\u002Fassets.chinareleaseagent.com\u002Fblog_0724_3_85c908ca17.webp)\n\nPoor demolding not only affects product quality but also increases labor costs for mold cleaning and maintenance.\n\n---\n\n## 7. High-Pressure Steam Curing\n\nAfter demolding, the pipe piles are transferred to the autoclave for high-pressure steam curing.\n\nThe autoclave curing process consists of four stages.\n\n| Stage | Duration | Process Requirement |\n| --- | --- | --- |\n| Pressure Increase | Approximately 1.5 hours | Gradually increase pressure to 0.95 ± 0.05 MPa at the specified rate |\n| Constant Pressure | Approximately 2.75 hours | Maintain 0.95 ± 0.05 MPa |\n| Pressure Reduction | Approximately 2.5 hours | Gradually reduce pressure at the specified rate |\n| Cooling | Approximately 0.75 hours | Open the autoclave doors in stages to cool the chamber |\n\n\nAfter high-pressure curing, the pipe piles reach their design strength and are ready for inspection and delivery.\n\n\n>\n\n![High-pressure steam curing of prestressed concrete pipe piles in an autoclave](https:\u002F\u002Fassets.chinareleaseagent.com\u002Fblog_0724_4_f72758652d.webp)\n\n\n---\n\n## Conclusion\n\nThe production of prestressed concrete pipe piles involves multiple critical manufacturing stages, and the release agent plays an essential role from the very beginning of the process.\n\nThrough proven production applications, high-performance water-based pipe pile release agents not only provide reliable demolding performance but also reduce mold contamination, improve concrete surface quality, extend mold service life, and significantly lower overall production costs through dilution ratios of 15:1 to 35:1.\n\nFor modern pipe pile manufacturers, selecting a release agent that matches their production process, together with standardized application procedures, is an effective way to improve production efficiency while enhancing both product quality and economic performance.","2026-07-24T07:32:08.390Z","2026-07-24T18:15:21.495Z","2026-07-24T07:32:08.372Z","pipe-pile-release-agent-application-guide","Pipe Pile Release Agent Application Guide: A Complete Overview of Prestressed Concrete Pipe Pile Manufacturing","Prestressed Concrete Pipe Piles (PHC Pipe Piles) are widely used in foundation engineering. This guide explains the manufacturing process of concrete pipe piles and practical application experience with water-based release agents.",null,"en",{"data":16},{"id":17,"attributes":18},635,{"name":19,"alternativeText":20,"caption":21,"width":22,"height":23,"formats":13,"hash":24,"ext":25,"mime":26,"size":27,"url":28,"previewUrl":13,"provider":29,"provider_metadata":13,"createdAt":30,"updatedAt":31},"pipe-pile-release-agent-application-cover.webp","Water-based release agent application in prestressed concrete pipe pile manufacturing","A water-based release agent is applied to steel molds before the production of prestressed concrete pipe piles, ensuring smooth demolding, high surface quality, and improved manufacturing efficiency.",800,480,"blog_0724_1_54caae5312",".webp","image\u002Fwebp",42.52,"https:\u002F\u002Fassets.chinareleaseagent.com\u002Fblog_0724_1_54caae5312.webp","aws-s3","2026-07-24T08:13:54.680Z","2026-07-24T09:04:35.255Z",{"data":33},{"id":34,"attributes":35},1,{"name":36,"createdAt":37,"updatedAt":38,"publishedAt":39,"slug":40,"description":41,"sort":34,"locale":14},"Industry & Applications","2025-07-28T06:57:48.790Z","2026-05-08T06:47:31.737Z","2025-07-28T06:57:55.359Z","industry-applications","这是构建“主题集群”(Topic Clusters) 的核心区域，体现你的专业广度和深度。采购和研发人员会根据他们的领域来查找信息。",{"data":43},[44],{"id":45,"attributes":46},4,{"createdAt":47,"updatedAt":48,"publishedAt":49,"name":50,"Model":51,"Origin":52,"Applications":53,"Properties":54,"PH":55,"Density":13,"Dimensions":13,"Storage":56,"Transportation":57,"slug":58,"sort":59,"flashPoint":60,"freezingPoint":61,"useTemperature":62,"package":63,"shelfLife":64,"dilutionRatio":65,"description":66,"advantagesTitle":13,"locale":14,"cover":67,"images":94,"cate_product":168},"2025-09-02T09:16:01.762Z","2026-05-08T06:47:31.835Z","2025-09-02T09:16:08.575Z","Water Based Precast Concrete Release Agent for Pipe Pile Applications","GP-4,PC-06,GZ-06","China","Pipe pile molds, cylindrical precast parts, and high-frequency demolding lines.","Uniform coating behavior, low residue tendency, and reliable release performance.","6-8","Store in a cool, dry place indoors","7-20 days","water-based-precast-concrete-release-agent-for-pipe-pile-applications",3,"> 93°C"," -7℃","Normal Temperature","50kg\u002Fbarrel,200kg\u002Fbarrel","12 months","3-35 times","Water-based release agent optimized for pipe pile and related precast applications. Supports smooth release and more consistent surface quality under repetitive cycles.",{"data":68},{"id":69,"attributes":70},148,{"name":71,"alternativeText":72,"caption":58,"width":73,"height":73,"formats":74,"hash":89,"ext":25,"mime":26,"size":90,"url":91,"previewUrl":13,"provider":29,"provider_metadata":13,"createdAt":92,"updatedAt":93},"water-based-precast-concrete-for-piles.webp","Precast concrete piles with smooth surface using water-based release agent",640,{"small":75,"thumbnail":82},{"ext":25,"url":76,"hash":77,"mime":26,"name":78,"path":13,"size":79,"width":80,"height":80,"sizeInBytes":81},"https:\u002F\u002Fassets.chinareleaseagent.com\u002Fuploads\u002Fsmall_cover_concrete_4_4db0c2c68e.webp","small_cover_concrete_4_4db0c2c68e","small_cover_concrete_4.webp",5.11,500,5108,{"ext":25,"url":83,"hash":84,"mime":26,"name":85,"path":13,"size":86,"width":87,"height":87,"sizeInBytes":88},"https:\u002F\u002Fassets.chinareleaseagent.com\u002Fuploads\u002Fthumbnail_cover_concrete_4_4db0c2c68e.webp","thumbnail_cover_concrete_4_4db0c2c68e","thumbnail_cover_concrete_4.webp",0.79,156,794,"cover_concrete_4_4db0c2c68e",10.5,"https:\u002F\u002Fassets.chinareleaseagent.com\u002Fuploads\u002Fcover_concrete_4_4db0c2c68e.webp","2025-09-19T08:07:40.267Z","2026-02-24T04:26:43.549Z",{"data":95},[96,120,144],{"id":97,"attributes":98},183,{"name":99,"alternativeText":100,"caption":101,"width":73,"height":73,"formats":102,"hash":115,"ext":25,"mime":26,"size":116,"url":117,"previewUrl":13,"provider":29,"provider_metadata":13,"createdAt":118,"updatedAt":119},"precast-concrete-release-agent-in-pile.webp","Precast concrete release agent applied on precast concrete pile for smooth demolding"," Application of precast concrete release agent on precast concrete pile",{"small":103,"thumbnail":109},{"ext":25,"url":104,"hash":105,"mime":26,"name":106,"path":13,"size":107,"width":80,"height":80,"sizeInBytes":108},"https:\u002F\u002Fassets.chinareleaseagent.com\u002Fuploads\u002Fsmall_water_based_precast_concrete_release_agent_for_pipe_pile_applications_1_428b1c3507.webp","small_water_based_precast_concrete_release_agent_for_pipe_pile_applications_1_428b1c3507","small_water_based_precast_concrete_release_agent_for_pipe_pile_applications_1.webp",10.85,10846,{"ext":25,"url":110,"hash":111,"mime":26,"name":112,"path":13,"size":113,"width":87,"height":87,"sizeInBytes":114},"https:\u002F\u002Fassets.chinareleaseagent.com\u002Fuploads\u002Fthumbnail_water_based_precast_concrete_release_agent_for_pipe_pile_applications_1_428b1c3507.webp","thumbnail_water_based_precast_concrete_release_agent_for_pipe_pile_applications_1_428b1c3507","thumbnail_water_based_precast_concrete_release_agent_for_pipe_pile_applications_1.webp",2.49,2486,"water_based_precast_concrete_release_agent_for_pipe_pile_applications_1_428b1c3507",17.5,"https:\u002F\u002Fassets.chinareleaseagent.com\u002Fuploads\u002Fwater_based_precast_concrete_release_agent_for_pipe_pile_applications_1_428b1c3507.webp","2025-09-22T08:32:54.477Z","2026-02-24T04:27:14.826Z",{"id":121,"attributes":122},181,{"name":123,"alternativeText":124,"caption":125,"width":73,"height":73,"formats":126,"hash":139,"ext":25,"mime":26,"size":140,"url":141,"previewUrl":13,"provider":29,"provider_metadata":13,"createdAt":142,"updatedAt":143},"precast-concrete-release-agent-in-round-pile.webp"," Precast concrete release agent applied on round precast concrete pile for smooth demolding","Application of precast concrete release agent on round precast concrete pile",{"small":127,"thumbnail":133},{"ext":25,"url":128,"hash":129,"mime":26,"name":130,"path":13,"size":131,"width":80,"height":80,"sizeInBytes":132},"https:\u002F\u002Fassets.chinareleaseagent.com\u002Fuploads\u002Fsmall_water_based_precast_concrete_release_agent_for_pipe_pile_applications_2_675e268c87.webp","small_water_based_precast_concrete_release_agent_for_pipe_pile_applications_2_675e268c87","small_water_based_precast_concrete_release_agent_for_pipe_pile_applications_2.webp",8.55,8550,{"ext":25,"url":134,"hash":135,"mime":26,"name":136,"path":13,"size":137,"width":87,"height":87,"sizeInBytes":138},"https:\u002F\u002Fassets.chinareleaseagent.com\u002Fuploads\u002Fthumbnail_water_based_precast_concrete_release_agent_for_pipe_pile_applications_2_675e268c87.webp","thumbnail_water_based_precast_concrete_release_agent_for_pipe_pile_applications_2_675e268c87","thumbnail_water_based_precast_concrete_release_agent_for_pipe_pile_applications_2.webp",2.2,2204,"water_based_precast_concrete_release_agent_for_pipe_pile_applications_2_675e268c87",14.13,"https:\u002F\u002Fassets.chinareleaseagent.com\u002Fuploads\u002Fwater_based_precast_concrete_release_agent_for_pipe_pile_applications_2_675e268c87.webp","2025-09-22T08:32:54.403Z","2026-02-24T04:27:12.612Z",{"id":145,"attributes":146},182,{"name":147,"alternativeText":148,"caption":149,"width":73,"height":73,"formats":150,"hash":163,"ext":25,"mime":26,"size":164,"url":165,"previewUrl":13,"provider":29,"provider_metadata":13,"createdAt":166,"updatedAt":167}," precast-concrete-release-agent-square-in-pile.webp","Application of precast concrete release agent on square precast concrete pile surface","Smooth and non-stick surface on square precast concrete pile using release agent",{"small":151,"thumbnail":157},{"ext":25,"url":152,"hash":153,"mime":26,"name":154,"path":13,"size":155,"width":80,"height":80,"sizeInBytes":156},"https:\u002F\u002Fassets.chinareleaseagent.com\u002Fuploads\u002Fsmall_water_based_precast_concrete_release_agent_for_pipe_pile_applications_3_385db06b9d.webp","small_water_based_precast_concrete_release_agent_for_pipe_pile_applications_3_385db06b9d","small_water_based_precast_concrete_release_agent_for_pipe_pile_applications_3.webp",13.18,13182,{"ext":25,"url":158,"hash":159,"mime":26,"name":160,"path":13,"size":161,"width":87,"height":87,"sizeInBytes":162},"https:\u002F\u002Fassets.chinareleaseagent.com\u002Fuploads\u002Fthumbnail_water_based_precast_concrete_release_agent_for_pipe_pile_applications_3_385db06b9d.webp","thumbnail_water_based_precast_concrete_release_agent_for_pipe_pile_applications_3_385db06b9d","thumbnail_water_based_precast_concrete_release_agent_for_pipe_pile_applications_3.webp",2.92,2920,"water_based_precast_concrete_release_agent_for_pipe_pile_applications_3_385db06b9d",23.62,"https:\u002F\u002Fassets.chinareleaseagent.com\u002Fuploads\u002Fwater_based_precast_concrete_release_agent_for_pipe_pile_applications_3_385db06b9d.webp","2025-09-22T08:32:54.434Z","2026-02-24T04:27:13.579Z",{"data":169},{"id":34,"attributes":170},{"name":171,"createdAt":172,"updatedAt":173,"publishedAt":174,"sort":34,"slug":175,"title":176,"description":177,"locale":14},"Concrete Release Agent","2025-07-28T06:05:25.536Z","2026-04-30T05:30:04.875Z","2025-07-28T06:05:30.308Z","concrete-release-agent","Professional Concrete Release Solutions: Flawless Finishes for Every Mold","High-performance formulas for flawless precast concrete",{"id":179,"metaTitle":180,"metaDescription":181,"metaRobots":182,"canonicalURL":13,"metaViewport":183,"metaKeywords":13,"jsonLd":13},2388,"Pipe Pile Release Agent Guide | PHC Manufacturing","Learn how water-based release agents improve demolding, protect molds, and boost efficiency in PHC pipe pile production.","index,follow","width=device-width, initial-scale=1",{"data":13},{"data":186},[],1787129125122]