... High stability 2 Solid web: Plywood; High durability; High load bearing Features:1) Material: Radiate Pine, Hemlock/Fir2) Flange: 40x80mm, and ... ), the web is made of multilayer plywood.4) Length: 1.8m, 2m, 3m, up to 12metres( any special length ... ,universal property,fast operations High stiffness,light weight,strong load-carrying capability; Simple assembly and disassembly,flexible application make ...