Stainless steel flat welding flanges with neck (H * * 594, H * * 616, GB/T9116) have a lower neck height, which improves the stiffness and load-bearing capacity of the flange. Compared with butt welding flanges, the welding workload is large, the consumption of welding rods is high, and it cannot withstand high temperature, high pressure, repeated bending, and temperature fluctuations. However, on-site installation is more convenient and the process of welding seam rubbing can be omitted. Equipped with neck flat welding flanges (H * * 594, H * * 616, GB/T9116), the neck height is relatively low, which improves the stiffness and load-bearing capacity of the flange. Compared with butt welding flanges, the welding workload is large, the consumption of welding rods is high, and it cannot withstand high temperature, high pressure, repeated bending, and temperature fluctuations. However, on-site installation is more convenient, and the process of welding seam rubbing can be omitted, which is more popular.

Scope of application of stainless steel neck flange:

PN0.6~4.0MPA DN≤600mm。

Production materials:

碳钢: （Carbon Steel）:ASTM A105,20#、Q235、16Mn、 ASTM A350 LF1, LF2 CL1/CL2, LF3 CL1/CL2、ASTM A694 F42, F46, F48, F50, F52, F56, F60, F65, F70； 不锈钢: （Stainess Steel）: ASTM A182 F304、304L、 F316、316L、1Cr18Ni9Ti、0Cr18Ni9Ti、321、18-8； 合金钢: （Alloy Steel）: ASTM A182 F1、 F5a、 F9、 F11、 F12、 F22、F91、A182F12、A182F11、16MnR、Cr5Mo、12Cr1MoV、15CrMo、12Cr2Mo1、A335P22、 St45.8/Ⅲ；

Applicable standards:

Ministry of Chemical Industry H * * 594-1997, National Standards GB/T9116.1-2000-GB/T9116.4-2000, American Standard ANSI B16.5, Ministry of Chemical Industry H * * 616-1997, National Standards GB/T9116.1-2000-GB/T9116.4-2000.