... :6m-18m. 3.API&ISO certification. API 5L spiral steel pipe/ERW pipe/welded tube.1.API 5L ... 030.0351741317.5-24 SAW/SSAW Spiral Welded Steel PipeQUALITY STANDARD1>SY/T 5040 Spiral submerged arc-welded steel pipe ... Machinery, Solar Stent, Offshore Oil Field, Mine Equipment, Electromechanical Hardware, , heavy engineering, Mining and Resources, Process Engineering, Materials Handling,Mechanical Parts ...