pipeline installation Construction services

Your Global Partner in Pipeline Installation

We are specialists in the installation and pre-commissioning of oil and gas pipeline systems. With certified expertise in GA1/GB1 Pressure Pipeline Installation and integrated Pigging, Testing, and Drying services, we deliver fully operational pipelines. Our core advantage to international clients is a single-source solution that guarantees safety, performance, and full compliance with global energy industry standards, protecting your investment from installation to first flow.

Construção e instalação de condutas

Pipelines conveying toxic, flammable, or explosive gas with design pressure P > 1.6 MPa;
Pipelines conveying toxic, flammable, or explosive liquid with conveying distance ≥ 200 km and nominal diameter DN ≥ 300 mm;
Pipelines conveying slurry medium with conveying distance ≥ 50 km and nominal diameter DN ≥ 150 mm.

GB1 applies to gas pipelines.

GA1 Class & Long-Distance Pipelines

Gas Transmission Pipelines with design pressure ≥4.0MPa (gauge pressure, same below)
Oil Transmission Pipelines with design pressure ≥6.3MPa
Note: GA1 classification covers GA2 requirements. GB1 applies to gas distribution pipelines.

New Pipeline Services:

Pigging (pipeline cleaning)
Line sweeping
Pressure testing
Pipeline drying

Pipeline installation site

Pigging, Line Swabbing, and Pressure Testing for New Pipelines

Pigging and swabbing are critical steps in long-distance pipeline construction. The process involves using compressed air to propel cleaning pigs through the pipeline, effectively removing debris such as soil, welding slag, and other contaminants.

Pipeline Cleaning and Grouting Injection

Environmentally Safe Disposal of Decommissioned Pipelines (Cleaning & Grout Sealing)

Although decommissioned pipelines remain buried underground, years of corrosion and third-party construction activities may compromise their integrity. Without proper treatment, residual oil/gas in these pipelines can pose secondary hazards. While complete excavation removal is the optimal disposal method, most abandoned pipelines are located in high-risk areas—either beneath roads/buildings with complex permitting requirements or near environmentally sensitive zones like coastal shallows—making full removal impractical.

The environmentally safe disposal process consists of two phases:

Pipeline Cleaning (method selection based on residual content):
- Physical cleaning: Pigging (PIG)
- Chemical cleaning: Solvent flushing
- Thermal cleaning: Steam purging
Pipeline Sealing:
- Nitrogen purging
- Grout injection sealing (primary method)

Pipeline pigs are specialized devices propelled by gases, liquids, or the pipeline’s own medium to perform cleaning operations. They can also carry auxiliary tools to complete complex pipeline maintenance tasks.

During construction, pipelines inevitably accumulate debris (water, soil, sand, stones, welding slag, etc.). In operation, built-up condensates and corrosion products degrade gas quality, reduce throughput (while increasing pressure differentials and energy consumption), clog instrumentation, impair measurement accuracy, and accelerate internal corrosion.

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Beijing Jinshiwan is a leading integrated company of pipeline technology and services, combining high-end equipment manufacturing with professional engineering expertise. We deliver safe, reliable, and innovative full-lifecycle pipeline solutions for the global oil & gas, chemical, and utility industries.

Construção e instalação de condutas

Construção de gasodutos transnacionais
Instalação e colocação em funcionamento de condutas
Instalação de sistemas de condutas em instalações industriais
Desvio e alteração de condutas

Manutenção e reparação de condutas

Serviços de perfuração a quente e de perfuração sob pressão
Serviços de obstrução e isolamento de condutas
Reparação de emergência de uma conduta
Reabilitação e revestimento de condutas
Reparação com manga composta (instalação da manga B)
Proteção contra a corrosão e reparação

Serviços Técnicos Especializados

Gestão da integridade das condutas
Serviços de apoio à inspeção em linha
Alterações em linha sob tensão sem interrupção do serviço
Ensaios de pressão em condutas
Limpeza e secagem de condutas

Equipamento e Fabrico

Fabrico de máquinas de perfuração a quente
Produção de equipamento para desobstrução de condutas
Fabrico de acessórios personalizados para tubagens
Fabrico de válvulas especiais

As vantagens do nosso serviço internacional:

• Capacidade de resposta a emergências 24 horas por dia, 7 dias por semana
• Normas em conformidade com a API e a ASME
• Gestão de projetos multilingues
• Apoio global em matéria de transporte marítimo e logística
• Supervisão técnica no local em todo o mundo