NFF01-812-2 铁路车辆.钢的电弧焊和电阻焊焊接点.第2部分:电阻焊焊接点缺陷的验收标准
NFF01-812-2 Railway rolling stock.Arcand resistance welded joints of steels.Part2:resistance welding point defect acceptance criteria.
中国防火网全国免费咨询电话:400-666-7290
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NFF01-812-2 铁路车辆.钢的电弧焊和电阻焊焊接点.第2部分:电阻焊焊接点缺陷的验收标准
NFF01-812-2 Railway rolling stock.Arcand resistance welded joints of steels.Part2:resistance welding point defect acceptance criteria.
中国防火网全国免费咨询电话:400-666-7290
网址:www.firete.com
邮箱:info@firete.com
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