Pinhole free film. A surface free from any defects.
无针孔的涂膜，没有表面缺陷的表面。
Centrifugal casting, compact structure, free from pinhole porosity and slag, smooth surface and even wall thickness.
高速离心铸造，组织致密，无砂眼、夹渣，表面光滑、壁厚均匀。
Centrifugal casting, compact structure, free from pinhole porosity and slag, smooth surface and even wall thickness.
高速离心铸造，组织致密，无砂眼、夹渣，表面光滑、壁厚均匀。
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