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    1. HOME > English > Products > Drill pipe > Double wall >

      Double wall

      Double wall
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      24 hours free hotline

      product details
      Product Features
      Superior-quality pipe& advanced heat treatment process, high strength &high toughness(especially under low temperature)
      Smooth and long upset transition area & strong hard banding-extended product life
      To meet or exceed requirements of the API 5D,API 7G, API Q1 & ISO9001
      Equipment with advanced inspection instruments and a strictly quality controlling system, the final products are guaranteed to be of superior and stable quality
      Due to our professional technicians & product flexibility, we are capable of meeting some customers’ specific requirement.

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