·閥桿設計 * U0 P; C1 `7 o2 Y; c9 Y" l4 u, z1 f" l+ g; _1 \
采用整體鍛造工藝制成,按照標準要求確定最小直徑。 , }% U* m X" w
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Stem Design ( v5 M* h* k9 H s" `0 G' N6 `) L; \4 A2 uThe stem is of integral forged design,The minimum diameter of the stem shall per the standard requirement.