Recently, persistent heavy rainfall in North China triggered floods and geological disasters across Beijing, Tianjin, and Hebei. A critical DN200 crude oil pipeline operated by North China Oilfield in Wen’an, Langfang, was at severe risk. Had the flood ruptured the pipeline, causing a crude oil spill, it would have not only disrupted production but also
Project Overview This offshore gas pipeline isolation project involves pressure containment operations during the relocation of CNOOC’s gas pipeline for the new Fuzhou-Xiamen railway construction. Key tasks include: Critical Workscope: Pipeline Specifications: Parameter Value Diameter φ406×8mm Material L360M steel Design Pressure 4.0 MPa Operating Pressure 2.0 MPa Content Natural gas Coating 3PE anti-corrosion Project Timeline & Stakeholders:
Taraudage à chaud et obturation de pipelines pour le déplacement du gazoduc de CNOOC Lire plus »
Project Overview In September 2021, inline inspection (ILI) of the Xingxian Gas (CBM) Utilization Project and Yuanping Second Gas Source Connection Project revealed critical deformations requiring pipe replacement: This non-stop pipeline isolation solution ensures continuous CBM supply during repairs. Key Technical Details: Parameter Value Diameter Ф813×12.5mm Material L450 steel Design Pressure 8.0 MPa Operating Pressure 4.0 MPa Content Natural
Project Overview This gas pipeline relocation is necessitated by the highway expansion of the Fuquan Expressway connector and planned Luocheng Road routing in Cangshan District, Fuzhou City. Approximately 1,450m of existing pipeline is encroached by planned ramps and roundabouts, with some sections directly beneath highway interchange pile foundations. The new route spans 1,821.7m (Pile AP-01 to AP-52). Key Construction Details: Pipeline Specifications: Parameter Value
Project Overview This high-pressure gas pipeline relocation project involves constructing 551m of new pipeline to replace an existing line. The new route runs: Key Construction Details: Technical Parameters: Parameter Value Diameter D355.6×6.3mm Design Pressure 6.3 MPa (GA1 Class) Content Natural gas Coating 3PE reinforced Project Timeline & Stakeholders:
High-Pressure Gas Pipeline Relocation and Pressure Isolation Project Lire plus »
Project Overview To meet market demand, this interconnection pipeline project requires adding a new DN508 pipeline to the existing Ф508 active gas line. Due to continuous downstream supply requirements, the construction will use hot tapping and plugging technology to avoid shutdowns. Key Construction Details:
Hot Tapping and Plugging for Sino-Russian Pipeline Interconnection Project Lire plus »
Project Scope This pressure pipeline subcontracting involves 12 hot tapping operations, including: Key Technical Specifications: Pipeline Dimensions Material Design Pressure Operating Pressure Special Requirements Gas Main (D717) 717.4×19.1mm X60 Class 600 6.0-7.0 MPa Pigging compatible Gas Main (D660) 660×30mm L415Q Class 600 6.0-7.0 MPa Thick-wall welding Critical Components: Technical Challenges: ✅ Thick-wall welding procedures (AWS D1.1 compliant)✅ High-pressure hot tapping (6-7MPa live
Hot Tapping Services Subcontract for EPC Project Lire plus »
Project Overview This pipeline safety remediation project involves 1.04km of new pipeline construction along the Ningbo-Yongning Crude Oil Pipeline (Pile 181#+350m to 181#+880m) to eliminate encroachment risks and ensure long-term operational safety. Key Construction Details: Pipeline Specifications: Parameter Value Diameter Ф762×10.3mm (D762mm) Material L415 steel Design Pressure 8.5 MPa Operating Pressure 1.0 MPa Content Crude oil Corrosion Protection 3PE coating Construction Schedule &
Project Overview This crude oil pipeline relocation project is located in Weishan County, Jining City, Shandong Province, addressing safety hazards along the Luning Pipeline. Key Construction Details: Pipeline Specifications: Parameter Value Diameter φ720×8.7mm (D711mm) Material L360 steel Design Pressure 6.0 MPa Operating Pressure 2.5 MPa Content Crude oil Corrosion Protection Asphalt coating + 3G tape Construction Schedule & Location:
Project Overview This project addresses safety hazards caused by pipeline encroachment near residential areas in Mayidian Village, Wuyuan Township, Yueyang County, Hunan Province. The existing pipeline, originally installed via directional drilling under National Highway 107, poses risks due to its proximity to populated areas. Key Construction Details: Pipeline Specifications: Parameter New Pipeline Existing Pipeline Diameter D406.4mm D406.4mm Wall Thickness
Pipeline Replacement and Encroachment Remediation Project Lire plus »
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