Tianjin Jiu Long Steel Pipe Co., Ltd. is a company specializing in the sale of square steel pipes..We primarily sell square pipes, Q355B square pipes, Q345B seamless square tubes, Q345D seamless square tubes, Q345C square pipes, large diameter square pipes, stainless steel square pipes, galvanized square tubes, seamless square tubes, and special (non-standard) square rectangular tubes.

    Our products comply withGB/T 13793-92, GB 6728-86 standards, and Japanese JISG3445, JISG3446 standards.