The large quantity of nodular iron castings had back bridge housing are produced by using copula and handcraft molding.

　
英 美
  • 通過(guò)合理熔煉、造型、制芯及鑄造工藝參數,采用沖天爐熔煉,手工造型制芯,實(shí)現批量生產(chǎn)優(yōu)質(zhì)帶包類(lèi)橋殼球鐵件。
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