material:steel processing of surface zincification length:3000mm 1. 42H T BLACCK GROOVE main tee:42*15mm 3.6/3.66mcross tee:42*15mm 1.2/1.22mcross tee:42*15mm 0.6/0.61wall angle:22*19/22mm 3m2. 28H T BLACCK GROOVE main tee:28*24mm 3.6/3.66mcross tee:28*24mm 1.2/1.22mcross tee:28*24mm 0.6/0.61mwall angle:22*19/22mm 3m3. 15H T BLACCK GROOVE main tee:32*15mm 3.6/3.66mcross tee:32*15mm 1.2/1.22mcross ...
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