Galvanized square steel pipe& rectangle steel pipe, Big size square steel pipe& rectangle steel pipe, erw welded square steel pipe& rectangle steel pipe.
Ten years for the professional research and development of the steel pipe productLeadingfly steel pipe factory is professional in research, production and sales of the steel pipe.
Consultation hotline:0086-317-3771170
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About us
Cangzhou Leadingfly Steel Pipe Co.,Ltd, located in the Development Zone of Mengcun which is the hometown of steel pipe and pipe fittings, is specialized in the production of the steel pipe and pipe fittings etc. 
We have black erw welded steel pipe production line, 500 machinery group, 300 machinery group and 200 machinery group. In addition, all of the machinery groups are controlled automatically. The size is 15mm*15mm—1000mm*1000mm for the square steel pipe, 20mm*15mm—1200mm*900mm for the rectangle steel pipe. The range of the wall thickness is 1.2mm---35mm. The type of the hollow section will be ERW welded pipe or seamless steel pipe. 
We also can supply the erw steel pipe with the size fromΦ21mm-Φ1220mm. The wall thickness is from 2.0mm-30mm. the size of the spiral steel pipe is from Φ159mm to Φ3000mm. The wall thickness is 4.5mm to 30mm. 
The standard of the square steel pipe and rectangle steel pipe is ASTM A 53, ASTM A 106, GB/T 9711, SY/T 5037, EN10210,EN10219, ASTMA500, GB/T3094-2012,. GB/T6728-2008, JIS G3466 etc.。The steel grade is Q195,Q235A/B/C/D, Q345A/B/C/D, alloy steel pipe, ss steel etc. 
With the development of the marketing, we opened one new workshop to product the anti-corrosion steel pipe, such as Epoxy coated firefighting steel pipe, 2PE/3PE coated steel pipe, epoxy coated steel pipe for water transmission, epoxy coated inside galvanized steel pipe, epoxy and polyester coated steel pipe for natural gas, etc. this kind of anti-corrosion process can be used in all of the pipe, such as seamless steel pipe, erw steel pipe, spiral steel pipe, galvanized steel pipe etc. It is widely used in city building, chemical industry, electrical industry, mineral industry. Therefore, it has good reputation for air protection and safe usage environment, long life for anti-corrosion. 
Leadingfly's consistent idea and action principle is: The best products for projects, the best service for customers. Let's create a more prospective future together!