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Protection of screwed pipes against corrosion in saline water and reduction of the pressure drop coefficient of these same tubes
Protection of screwed pipes against corrosion in saline water and reduction of the pressure drop coefficient of these same tubes
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机译:防止螺纹管在盐水中腐蚀并降低这些管的压降系数
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摘要
Process for protecting steel pipes in saline waters against corrosion and reducing the internal friction coefficient of the fluid conveyed. The process consists in covering with PVC or plastic walls screwed steel pipes commonly employed in the oil industry, by sleeving by force. The process makes use of a fitting bench made of wood to facilitate the slip phenomenon, on which is placed a steel pipe threaded at the two end parts with the aid of a guide consisting of a steel pipe forming a protector. The guide fulfils two essential functions for this process of manufacture by sleeving by force: 1) it prevents the PVC or plastic from folding, breaking or being distorted, 2) it pushes the PVC or plastic tube by means of a translational pulling movement, driven by a steel cable which winds around a winch; blocking being provided by a stop placed at the end of this guide. IMAGE
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