本工艺标准适用于工业与民用建筑现浇钢筋混凝土结构中直径14～40mm的

本工艺标准适用于工业与民用建筑现浇钢筋混凝土结构中直径14～40mm的ⅠⅢ级钢筋在垂直位置、水平
位置或倾斜位置的对接连接。当两钢筋直径不同时，也可用气压焊连接，但其两直径之差不得大于7mm。2 施工准备 2.1 材料及主
要机具； 2.1.1 钢筋：钢筋的级别、直径必须符合设计要求，有出厂证明书及复试报告单。进口钢筋还应有化学复试单，其化学成
分应满足焊接要求，并应有可焊性试验。2.1.2 氧气（O2）：气压焊采用氧气纯度应该 在99.5%以上，质量符合GB3863中Ⅰ类或
Ⅱ类一级的技术要求。2.1.3 乙炔气（C2H2）：最好用瓶装溶解乙炔，质量必须符合GB6819的要求

結果 (中文) 3:

This technology is applicable to industrial and civil buildings in the cast-in-place reinforced concrete structure with diameter of 14 ~ 1 grade 40mm in the vertical position, horizontal position butt
or inclined position connection. When the two bar diameter is not at the same time, can also be used in gas pressure welding connection, but the two diameter difference of not more than 7mm. 2 preparation of construction materials and equipment to the main 2.1
; 2.1.1 steel: steel grade, diameter must meet the design requirements, have merchandisecertification and retest report. Imports of steel should have the chemical re single, the chemical
sub should meet the welding requirements, and should solderability test. 2.1.2 oxygen (O2):Gas pressure welding with oxygen purity should be above 99.5%, can meet the quality requirements of class I or II
GB3863 class technology. Acetylene gas 2.1.3 (C2H2): the best use of bottled acetylene, quality must comply with the requirements of GB6819