Umbhobho wensimbi we-Spiral udinga unyango lwangaphandle ukongeza ukuqina: 1. Umphezulu we-anticorrosive spiral tube ucocwa nge-solvents kunye ne-emulsions, enokususa i-organic matter kumphezulu we-spiral tube, kodwa ayikwazi ukususa i-rust, i-oxide scale, i-welding flux, njl., ngoko ke ukucoca ...
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