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。

youdao

TPB with f &r , bone- like belt , is filled with cotton and other textile and has been sucked in PVC liquid , then molded with high temperature .

本厂生产的全塑整芯阻燃输送带是以绵、涤和棉线纺织而成的整体带芯的骨架，浸渍PVC糊体，经高温塑化而成。

youdao