Март 29, 2018
стандарты:API 5CT Base pipe:API casing or tubing Slot style:прямой слот, keystone slot Slot shape:Slotted or custom Slot pattern:Ступенчатая, прямо в строке, банда, or custom Slotted liner patterns Three slot patterns are designed for different characteristics. Compared to staggered and straight [...]