សូមស្វាគមន៍ដើម្បីទស្សនា និងសេវាអ្នកត្រឹមត្រូវ & # 160; ។
pipe
Q345B square tubes are used in construction, machinery manufacturing, steel construction projects, shipbuilding, solar power
Q235B square tube is a square tube formed by Q235B hot-rolled or cold-rolled steel strip after process treatment. Q235B squar