Originally Posted by sethr
Can I purchase the CSST in long sections - say 30 feet? Alternatively, is it difficult to cut and attach connections to existing threaded black iron pipe?
Yes. You might have to get 50' though. I think it's something like 25', 50', 100'. It cuts with a normal copper pipe cutter, and the fittings attach with a series of washers, one split one not split and one o-ring. Follow the directions and you'll get along fine. I know Menards sells an installation guide with the pipe...and while there's way more in there than what you'll need, it's good to read the "best practices." When cutting, remove the plastic covering first, it cuts better. By the way...do a pressure check before turning on the gas, but no more than about 25 pounds.
To attach to existing pipe, just choose your connections accordingly e.g. male thread black pipe, use a female adapter. Make sure you use gas rated pipe thread sealant on the adapter to black connection. It seems many would rather stay away from the gas rated thread tape.