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ヘッド用のチューブキャップには20番の材質はありますか?

2020-12-02View Original

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ヘッド用のチューブキャップには20番の材質はありますか?お客様は毎回の注文でヘッドに20号材と記載していますが、鋼板はすべてQ235B材です。一体この材質のヘッドというものは存在するのでしょうか
Reply #22020-12-03
板材20#は、GB/T711の板です。。。あまり使われていないだけで、Q235BやQ245Rといった板材の方が最も一般的です。。

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