ERW Black welded steel Pipe( Round Hollow section/Oval Hollow Section)
Tuyau-tube rond/ovale acier noir
Material:Q195/Q215/Q235/Q345
Size: OD. 11.80mm – 76mm  (Round section)
Size: 9.5 x 17mm – 30 x 60mm  (Oval section)
Thickness: 0.30mm to up
Regular Length : 5.8 Metre or 6.0metre, according to customers' requirements
Standards: GB/T6728, ASTM-A500, JIS-G3466,BS
Surface: lightly oil , include black, bright and pre-galvanized