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铁道部专用设计院,根据国外有关资料研制成一种新型的(DWJ—I型)碗扣型脚手架,系一种杆件组装脚手。立杆上焊有下碗扣和活动上碗扣,联接横杆上焊有接头,横杆接头插入下碗扣,用上
The special design institute of the Ministry of Railways has developed a new (DWJ-I type) bowl-type scaffold based on relevant foreign materials, which is a kind of rod assembly foot. The lower pole is welded with the lower bowl buckle and the activity upper bowl buckle. The joint is welded on the connecting rod. The crossbar joint is inserted into the lower bowl buckle and used.