斯威沃制造符合 API 16A & API 16C的管套管夹，材质为高强4130材料，并通过ABS&DNV第三方设计认可。
设计制造符合以下国际规范：
SS‐SP75: Speci?cations for High test Wrought Butt Weld Fittings.
ANSI B31.3: Chemical Plant and Petroleum Re?nery Piping.
ANSI 16.9: Factory made Wrought Steel Butt Weld Fittings.
NACE MR‐01‐75: Sulphide Stress Cracking Resistant metallic Materials for Oil Field Equipment.
API 16A: Speci?cations for Drill Through Equipment.
