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From
Yignkou,
Liaoning,
China
From
Yignkou,
Liaoning,
China
Aluminum alloy cylinder pipe technology parameters:
Inner diameter 20-172mm
Line tolerance 1mm/1000mm
Inner toleranceh9-h11
Ovality tolerance:0.02-0.05mm
Surface oxidation hardness+300hv
Surface roughnessra0.6
Internal and external film thickness+308m
