We have modified the C4 drawing coil-15848 collar cannot be performed because the position of the pipe END PLATE hole for every used material is stainless steel.Add a steel rod sizes, 9 mm To be used as a supplementary beam between the fin and the END PLATE.End plates for every position hole tubes must be punching all the big size 16 mm. Can't make a COLLAR?The foldting is a method designed to prevent copper pipe leak caused by crashing into the hole of the plate.
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