今天六合彩開什麽特碼

香港六合彩151期
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  • Name: API Casing
  • Number: O02

  API Casing: Casings are used for fixing the well wall or down hole, which have wider diameters, can be divided into conductor casings, technical casings and Oil casings.

Size: 4 1/2” – 20”; 30" conductor pipe;
Grade: H40, J55, K55, N80, L80, C-95, P110, Q125
Connection: LTC, STC, and BTC
Type: Seamless and ERW