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Business development of gb/t 4171 q415nh advantages . GB/T 4171 specifies the size, shape, weight and allowable deviation of weather-resistant structural steel, technical requirements, test methods, inspection rules, packaging, marking and quality certificate.GB/T 4171 standard main steel grade:Q550NH,Q500NH,Q460NH,Q415NH, Q295NH,Q265GNH and so q345gnhlj weather steel mill - Weather Resistant Steel q345gnhlj weather steel mill. Standard:ASTM, ASME, AISI, GB, JIS, DIN, EN, BS Certification:ISO, SGS, RoHS, CE, IBR Production Capacity:50000 tons Per Month Description:what is gb t 18982 q325nhyj weather steel for bridge; gb t 18982 q245nhyj corten steel in stockgb t 18982 q295gnhj corten steel equivalent - Carbon Email:[email protected] Online Chat Leave a Message

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