The steel structural parts supplemented to the respective equipment shall be manufactured by the Buyer's at his own cost. 附属于相应设备的钢结构件应由买方自担费用负责制造。
It is demanding to fabricate crane bridge as large welded structure, so the upgrade to change its span is very challenging. 摘要起重机桥架作为大型焊接结构件，制造要求高，其改制具有典型意义。
