For construction use. Carry film faced plywood. Made of high-grade solid sawn lumber and plywood. Around 5.6-6.6 kgs per running meter. Treated by Water Proof Glue. (WBP) Prefabricated wood H20 beams are manufactured in a range of sizes. Long lengths use fingerjoining to splice flanges and butt jointing or toothed, tongue and groove or scarf configurations to splice the webs. The actual length is limited only by transportation restrictions Resistant to rough handling and extreme use with longer service life. Weight per running meter: 5.2-5.8 kg Mechanical specification: Bending moment max.5 Kn/m Cutting action max 10.0KN Bending max1/500 Live load max 1.5 KN/m2 Length in cm 180 - 245 - 290 - 330 - 360 - 390 - 450 - 490 - 590 http://www.i-beam.cn/ email: woodsupplier@gmail.com