斯威沃管道工程有限公司生产具备ABD/DNV船级社PDA认可的3D外加厚弯头，包括3D 45/90弯头。
设计制造均满足以下国际规范：
MSS‐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. ASME VIII Division 1 section 13.10Boiler and Pressure Vessel Code.
API 6A: Speci?cations for Wellhead and Christmas Tree Equipment
