开口楼承板: YX76-305-915 YX75-200-600 YX76-320-960 YX76-344-688 YX76-230-690 YX76-293-880 YX113-256-768 YX130-300-600 YX130-300-600 YX51-305-915 YX51-240-720 YX51-226-678 YX51-341-1025 YX51-250-750 YX35-125-750 YX51-185-740 YX38-152-914 燕尾版,也称倒扣板。 YX51-200-600 YX51-190-760 YX51-200-800 全闭口板:(YXB或BD) YXB65-170-510 YXB65-185-555 YXB65-254-762 YXB65-220-660 YXB65-240-720 YXB51-200-600 YXB51-283-850 YXB95-300 组合楼承板(闭口板一种) YXB40-185-740 YXB40-200-800 YXB54-185-565