Until recently, these standards covered PVC (D-2464) and CPVC (F-437) Schedule 80 threaded pressure fitting.
直到最近，这些标准涵盖PV C (D- 2464)和CPVC (F - 437)目录80螺纹压力连接件。
Until recently, these standards covered PVC (D-2464) and CPVC (F-437) Schedule 80 threaded pressure fitting.
直到最近，这些标准涵盖PV C (D- 2464)和CPVC (F - 437)目录80螺纹压力连接件。
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