With stellited trim 什么意思? trim 就是阀门内件的意思,和流体直接接触的部分,就是要求所有内件用stellite材质。 参考: the internal elements of a valve are collectively referred to as a valve's trim. according to api standards 600, "steel gate valve-flanged and butt-welding ends, bolted bonnets", the trim consists of stem, seating surface in the body, gate seating surface, bushing or a deposited weld for the backseat and stem hole guide, and small internal parts that normally contact the service fluid, excluding the pin that is used to make a stem-to-gate connection (this pin shall be made of an austenitic stainless steel material). 查看更多