双钢筋技术是国外专利,已在许多国家应用。双钢筋是将低碳冷拔钢丝焊成梯格形的骨架,它在混凝土中有较强的握裹力,可使构件受荷后裂缝较细,是一种在普通混凝土中发挥低碳冷拨钢丝强度的好方法,用它带替Ⅰ、Ⅱ级钢筋,1吨可顶1.5～3.0吨钢材,与Ⅲ级钢筋有相近强度,而且施工工艺和普通钢筋一样,适应面广,有一定经济效果 Double rebar technology is a foreign patent that has been applied in many countries. Double steel bars are welded low-carbon cold-drawn steel wire into a trapezoidal skeleton. It has strong gripping force in concrete and can make the cracks after loading the parts thinner. It is a kind of low-carbon cooling in ordinary concrete. A good way to set the wire strength, use it to replace the I, II steel, 1 ton can be top 1.5 to 3.0 tons of steel, similar strength with the III steel, and the construction process and ordinary steel, wide adaptation, there is a certain economy effect