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    1. Huai’an Zhenda Steel Tube Manufacturing Co.,LTD

      Casing/Couping

      ApplicationCasing/Couping
      Grade

      H40、J55、

      K55、N80-1

      StandardAPI Spec 5CT
      CertificationФ168.28~Ф540Х7.32~30
      Product(“0”means it could be made)

      WTK OD

      >159
      ~177.8
      >177.8
      ~219
      >219
      ~273
      >273
      ~325
      >325
      ~356
      >356
      ~377
      >377
      ~426
      >426
      ~508
      >508
      ~720
      ≥4.0~5.00 0 0 0 0     
      >5.0~7.00 0 0 0 0 0 0   
      >7.0~8.00 0 0 0 0 0 0 0  
      >8.0~10.50 0 0 0 0 0 0 0 0 
      >10.5~13.00 0 0 0 0 0 0 0 0 
      >13.0~20.00 0 0 0 0 0 0 0 0 
      >20.0~25.0  0 0 0 0 0 0 0 
      >25.0~30.0  0 0 0 0 0 0 0 
      >30.0~35.0   

      0 0 0 0 
      >35.0~40.0    

      0 0 0