SMC's 2-layer soft fluoropolymer tubing, series TQ, has a special nylon resin outer layer and an inner layer of special fluoropolymer. The internal smoothness of the TQ's inner layer is equivalent to Ra 0.02 m., and because the TQ is translucent it helps in identifying fluid color. Compared to SMC's TL series, flexibility has been improved by up to 55%, and the weight has been reduced
Common special order options for tubing can be found here.
Details on specifications other than those shown below can be found on the page of each of tubing series. Reinforced corrugated cardboard
specification/Longer length reel:
https://www.smcpneumatics.com/Part-Builder-Links_ep_2458-1.html?https://smccatalog.partbuilder.smcpneumatics.com/support/faq/en-jp/?ca_id=tubing&fa_id=11114