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首页> 外文会议>Proceedings of the ASME India oil and gas pipeline conference 2017 >PRESSURFECT~™ CNG-ADVANCED MATERIAL GRADE FOR HIGH PRESSURE CNG FUEL LINE APPLICATIONS
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PRESSURFECT~™ CNG-ADVANCED MATERIAL GRADE FOR HIGH PRESSURE CNG FUEL LINE APPLICATIONS

机译：用于高压CNG燃料管线应用的PRESSURFECT〜™CNG先进材料等级

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In line with the government of India's philosophy of going green to reduce emission levels in cities there is a thrust to increase the gas distribution network. With an increase in CNG vehicles, comes the safety of the people and we need to ensure that Safety is not comprised at any level. To follow the Safety aspect, CNG is an excellent alternate fuel which can be used to minimize risks and increase life of the vehicles. Since this gas is used at very high pressures (in the range of 230-250 bar) and under severe conditions, special tubing must be used for the transportation to gas stations and in the vehicles. Therefore, the tubing should be able to not only withstand high pressure of the gas within but also the corrosion issues arising due to the extreme conditions the tubes within. Sandvik did an extensive study of the conditions and came up with a material which is specifically developed for this high pressure application. The high pressure line is of Stainless Steel 316L but this material comes with certain modifications for this particular requirement. In this tubing the C content is lowered to 0.025% for better corrosion resistance, Ni is min 13% along with Mo min 2.5% this makes sure that the material not only has sufficient passivation properties but the strength also to withstand that kind of a pressure. Alongside a special production route also has been developed for the manufacturing of these tubing. This ensures Safety for the people throughout the life of the vehicle.
机译：与印度政府绿色环保的理念相一致，以减少城市的排放水平，因此有一个扩大天然气配送网络的努力。随着CNG车辆的增加，人们的安全也随之而来，我们需要确保安全性不在任何层面。为了遵循安全方面的要求，CNG是一种出色的替代燃料，可用于最大程度降低风险并延长车辆寿命。由于这种气体是在非常高的压力（230-250 bar的范围）和严酷条件下使用的，因此必须使用特殊的管道将其输送到加油站和车辆中。因此，管道不仅应能承受内部气体的高压，而且还应能承受由于内部管道的极端条件而引起的腐蚀问题。山特维克对条件进行了广泛的研究，并提出了专门为此高压应用开发的材料。高压管线为316L不锈钢，但该材料针对此特定要求进行了某些修改。该管中的C含量降低至0.025％，以获得更好的耐腐蚀性，Ni至少为13％，Mo至少为2.5％，这确保了该材料不仅具有足够的钝化性能，而且还具有承受这种压力的强度。除了这些管材的生产之外，还开发了一条特殊的生产路线。这确保了车辆整个生命周期的人员安全。

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