... weight: about 22,000kg This changeable purlin machine can produce 2 profile in one machine, and the machine can auto change the profile and specifications, ... , length, punching cutting, and roll forming. JCZ-350 changeable purlin machine consists of hydraulic decoiler, flattening device, 2 sets of hydraulic ... .cn/index.asp http://jgrollformingmachine.com/ JCZ-350 c/z changeable purlin machine`