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astm a252 high quality spiral steel pipe . st2. API 5L welded Spiral steel pipe / welded spiral pipe / spiral steel tube / API Spiral steel pipe . API 5L Welded Spiral Steel Pipe 1.OD:219mm-4220 mm 2.WT:4mm-25mm 3. High quality , Low MOQ 4.Standard:JIS A5525, API PSL1, PSL2 astm a252 high quality spiral steel pipe steel pipe Penstock Api Large Diameter Astm A252 Ssaw Spiral Steel PipeHigh quality Penstock Api Large Diameter Astm A252 Ssaw Spiral Steel Pipe from China, China's leading api penstock pipe product, with strict quality control astm a252 ssaw spiral steel pipe factories, producing high quality large diameter ssaw spiral steel pipe products. ODM Manufacturer High Quality Carbon Steel Pipe - SSAW astm a252 high quality spiral steel pipe steel pipeSpiral steel pipe was made by steel ciol, extrusion forming under the normal temperature, take the technology of double wire and double-faced submerged-arc welded. Spiral steel pipe was mainly used in public waterworks, petrochemical industry, chemical industry, electric power industry, agricultural irrigation and

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