【廣告】
有的膠合板是將兩個不同紋路的單板貼在一起制成的,所以在選擇上要注意夾板拼縫處應嚴密,沒有高低不平現(xiàn)象。挑選膠合板時,應注意挑選不散膠的膠合板。如果手敲膠合板各部位時,聲音發(fā)脆,工字鋼,則證明質(zhì)量良好,若聲音發(fā)悶,工字鋼采購,則表示膠合板已出現(xiàn)散膠現(xiàn)象。
Some plywood plywood is made of two different lines of the single board together, so in the choice of the splints should be careful to pay attention to the joint, there is no uneven phenomenon. When choosing plywood,工字鋼廠, you should pay attention to selecting plywood without glue. If the hand knocks on the plywood parts, the sound is crisp, which proves that the quality is good. If the voice is stuffy, it means that the plywood has already appeared loose glue phenomenon.
型材按生產(chǎn)方法可以分成熱軋型材、冷彎型材、冷軋型材、冷拔型材、擠壓型材、鍛壓型材、熱彎型材、焊接型材和特殊軋制型材等。型材按其橫斷面形狀可分成簡單斷面型材和復雜斷面型材。簡單斷面型材的橫斷面對稱、外形比較均勻、簡單,如圓鋼、線材、方鋼和扃鋼等。復雜斷面型材又稱為異型斷面型材,其特征是橫斷面具有明顯凸凹分支。
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