Weld Neck flanges

We are a reputable manufacturer and global supplier of ASME B16.5 Class 900 Weld Neck Flanges, offering forged steel flanges for high-pressure pipeline systems. Our Class 900 WN flanges are precision-engineered for critical applications in oil & gas, petrochemicals, refineries, and offshore industries.

Pressure Rating: Class 900 lbs
Size Range: ½” to 24” (DN15 – DN600)
Standard: ASME B16.5
Facing Type: RF (Raised Face), RTJ (Ring Type Joint)

Weld Neck flanges ASME B16.5 Class 1500 lbs Manufacturer,

Pressure Rating: Class 1500 lbs
Size Range: ½” to 24” (DN15 – DN600)
Standard: ASME B16.5
Facing Type: RF (Raised Face), RTJ (Ring Type Joint)

We are a professional ASME B16.5 Class 150 Weld Neck Flanges manufacturer and supplier in China, offering a wide range of forged flanges suitable for low to moderate pressure applications. Weld Neck flanges (also known as WN flanges) are designed to be butt-welded to pipe, offering excellent stress distribution and resistance to dishing and distortion.

½″ (DN 15) to 24″ (DN 600)