A61H/Y-160,A61H/Y-320 type are used forthe equipment and pipeline of the air, ammonia, petroleum gas, etc, medium what the working temperature are less than 200℃.A61Y-160P,A61Y-320type are used for the equipment and pipeline fo the quality with corrode gas and liquid medium What the working temperature are less than 200℃.Take for extra pressure protection devices.
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