China steel structure workshop (1)Light weight and neat. (2)Quick construction ... the purline by bolt.Purlin:we generally use c purlin ,c purlin can be paint or use material from ... , metal building, modular house, steel frame for warehouse, workshop, garage etc, steel beams, other riveting and welding parts ... bracing made from angle, round pipe, etc 6) C or z purlin: Size from C120~C320, Z100~Z2007 ...