seamless pipe : For the use of low, medium and high pressure boiler, marine, fluid transport, petroleum cracking, fertilizer eq Seamless steel pipe steel tubeFor the use of low, medium and high pressure boiler, marine, fluid transport, petroleum cracking, fertilizer equipment, structure and hollow rod purpose.Size:OD: 1/4"~48" WT: 1.5mm~40mmLength: 3M-12M. CustomizedSurface: Oiled or black ...