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The perforated tubing connects to a piece of 4 ID flexible exhaust hose.
Perforations allow for air to be drawn in the flexible hose to cool the inner pipe. This type of perforations is rigid and allows air flow.
Length varies from 9-12 lengths.
Perforated tubes for making high performance exhaust systems for autos.
OD 30 x Thickness 1 mm x Length 6 meter
Perforation type: hole size 3mm, triangler stitch 4mm
Carbon Steel Perforated Tube
Carbon steel perforated tubing is usually hot dipped