环垫类型环垫截面图环垫标准适用于法兰标准椭圆垫片ASMEB16.20API6AANSIB16.5ASMEB16.47,seriesA八角垫片ASMEB16.20API6AANSIB16.5ASMEB16.47,seriesARX垫片ASMEB16.20API6AAPI6BBX垫片API6AAPI6BX材质材质最大硬度(BRINELL)温度(℃)软铁90530低碳钢1205304C6%Chrome1/2%Mol(F5)130500304不锈钢160750316不锈钢160750321不锈钢160750347不锈钢160750410不锈钢17050031254不锈钢160650Monel140600Inconel8251601000Inconel6251801100)