Menene Astm A269 tubing?

mu masu sana'a ne na bakin karfe astm a249 coil tubing, ma'auni shine ASTM A 249 Coil tubing, tube shine Standard shine ASTM A249.surface ne mai haske, da tsawon ne 4000m / nada, da nada tube ne taushi, za a iya amfani da man filin, bututu dacewa, Kayan aiki