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Use these JTM 3 inch Screwed flanges to seal the ends of a pipeline or any connection. DN80 has a 190mm diameter, 18mm thickness, and 150mm PCD with 4 holes for M16X65 bolts. Made from durable steel and consisting of four holes, it is ideal for sealing the ends of a pipeline or any suitable connection. Flanges are covered in a primer-finished black paint, which may chip or flake during transportation, but this does not affect quality. Once installed with a pump or valve, they are usually painted in red oxide to protect from rust. Please note bolts are not included and must be purchased separately.. JTM PN6 Screwed Flange Black - 3 inch Steel FL-067-D