• A

  扁钢之间搭接为扁钢宽度的2倍，两面施焊

• B

  圆钢之间搭接为圆钢直径的6倍，双面施焊

• C

  圆钢与扁钢搭接为圆钢直径的6倍，双面施焊

• D

  扁钢与钢管搭接，紧贴1/2管外径两侧施焊

• E

  扁钢与角钢搭接，紧贴角钢面上两侧施焊