我司生產(chǎn)的彈簧預(yù)緊裝柱機(jī)分為內(nèi)徑30mm，50mm，大小均可定制，
裝柱完成后可保持柱內(nèi)恒壓，填料不塌陷。
The spring pretensioner column machine produced by our company is divided into inner diameter of 30mm, 50mm, and the size can be customized.
After the column is loaded, the constant pressure in the column can be maintained, and the packing material will not collapse.
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