... :2~11.8m 4) Material:Q195,Q cold forming square pipe 1.size:10*10mm-600*600mm2.thickness:0.5mm ... or as customers’request2. Painting, caps, beveled edges, plain end,making, tread , or as customers’ requestsProcessing technologyThreading ,coupling and ... have professional testing equipment such as ultrasonic testing machine, eddy current testing machine,Mechanics testing machine to make sure high quality.