ASME B16.5 Welding Neck Flange
The ASME B16.5 Welding Neck Flange (WN Flange) is a widely used flange type designed for butt welding to pipes, providing a strong, permanent, and leak-tight connection.
Featuring a long tapered hub, it ensures smooth stress transition between the pipe and the flange, making it highly suitable for high-pressure, high-temperature, and critical service applications.
ASME B16.5 covers flanges in sizes from NPS 1/2" to 24", making it the standard choice for most industrial piping systems.
ASME B16.5 Welding Neck Flange
ASME B16.5 Welding Neck Flange:
DN: 2'-24'
Application: petroleum, chemical, food industry, marine, etc.
Pressure grade: 50LB, 300LB,400LB, 600LB, 900LB, 1500LB, 2500LB
Certificate: API/ABS/CCS/DNV/GL/BV/LR/KR, etc.
Material:
Carbon steel : A105, A36, Rst37.2, St37.2, C22.8, SA350 LF2/LF1, Q235, Q345, SS400,ASTM A105,20#, A234, 16Mn、ASTM A350 LF1,LF2 CL1/CL2,LF3 CL1/CL2、ASTM A694 F42,F46,F48,F50,F52,F56,F60,F65,F70
Stainless steel: 304,304L,316,316L,F321,F347,F310，F44 F51,A276 S31803, A182, F43, A276 S32750,A705 631,632,A961, A484,
Alloy steel: ASTM A182 F1、 F5a、 F9、 F11、 F12、 F22、 F91、A182F12、A182F11、16MnR、Cr5Mo、12Cr1MoV、15CrMo、12Cr2Mo1、A335P22、St45.8/Ⅲ、35CrMoV、 45CrMo
Surface treatment:
Antirust oil, yellow, epoxy coating, nylon surface,hot galvanized,electrical galvanized
Making type:
Forged
Standard:
ANSIB16.5/B16.47/B16.48/B16.36, ASME,MSS SP44, etc.
