斯威沃制造符合 API 16A & API 16C的管套管夾，材質(zhì)為高強4130材料，并通過ABS&DNV第三方設(shè)計認可。
　　設(shè)計制造符合以下國際規(guī)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.