CROWN parallel threaded mechanical Type 2 couplers comprise a steel sleeve that is internally threaded in the size range 16mm-40mm, are for the mechanical connection of deformed high-yield carbon steel bars for the reinforcement of concrete. The deformed high-yield carbon steel bars are cold-formed into a round shape and roll threading to a pre-determined size to suit the couplers.

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皇冠牌平行螺紋機械 2 型連接器包括一個鋼套，內螺紋尺寸範圍為 16mm-40mm，用於機械連接變形的高產碳素鋼棒以加固混凝土。變形的高產碳鋼棒材冷成型為圓形，並軋製螺紋至預定尺寸以符合接駁器。

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The steel grade of raw materials for rebar couplers is better than Grade 500B

 

鋼筋接駁器原材料鋼級優於500B級

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All materials supplying comes with a mill certificate to ensure standard compilation. All tests will be sample tested and carried out by laboratories,

 

所有供應的材料都附有工廠證書，以確保符合標準。所有測試將由實驗室進行樣品測試和執行，

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• Material physical properties – Steel Grade, Nominal Size, Effective Area, Yield Stress, Tensile Strength, Elongation;

• Coupler dimension check to coupler;

• Internal thread and chamfer angle check per inspection standard form;

• Inspect detail and description details on labeling of the packing box.

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• 材料物理性能——鋼種、公稱尺寸、有效面積、屈服應力、抗拉強度、伸長率；

• 對皇冠牌接駁器進行接駁器尺寸檢查；

• 根據檢驗標準表格檢查內螺紋和倒角角度；

• 檢查包裝箱標籤上的細節和描述細節。