Hebei Longrun Pipeline Group CO.,LTD
We supply International Standard Code Industrial flanges for the Petrochemical, Construction, Waterworks, and other industries. We manufacture and supply ANSI, ASME, API, AWWA and other standard pipe flanges in common flange materials such as carbon, stainless, and alloys steel. Weld Neck flange, Slip on flange, Blind flange, Threaded flange, Socket Weld flange, Lap Joint flange, Orifice Flanges and more in sizes 1/2" to 72" or even customs shapes and sizes.
Size range of our flange:
The European system steel pipe flange applicable scope
Sealing surface type | PN/MPa (bar) | |||||||||
0.25 | 0.6 | 1.0 | 1.6 | 2.5 | 4.0 | 6.3 | 10.0 | 16.0 | 25.0 | |
RF | DN10-300 | DN10-2000 | DN10-1000 | DN10-600 | DN10-400 | DN10-300 | DN10-250 | |||
MFM | - | DN10-600 | DN10-400 | DN10-300 | - | |||||
TG | - | DN10-600 | DN10-400 | DN10-300 | - | |||||
FF | DN10-3000 | DN10-2000 | - | |||||||
RJ | - | DN15-400 | DN15-300 | DN15-250 |
The American system steel pipe flange applicable
Sealing surface type
| PN/MPa (Class) | |||||
2.0 | 5.0 | 11.0 | 15.0 | 26.0 | 42.0 | |
RF | DN15-600 | DN15-300 | ||||
MFM | - | DN15-600 | DN15-65 | DN15-300 | ||
TG | - | DN15-600 | DN15-65 | DN15-300 | ||
FF | DN15-600 | - | ||||
RJ | DN25-600 | DN15-600 | DN15-300 |
Sealing type of flange: RF,FF,MFM,TG,RJ
Flange Material:
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;
Stainless steel:
ASTM A182 F304,304L, F316,316L,1Cr18Ni9Ti,0Cr18Ni9Ti,321,18-8
Alloy steel:
ASTM A182 F1, F5a, F9, F11, F12, F22, F91,A182F12,A182F11,16MnR,
Cr5Mo,12Cr1MoV,15CrMo,12Cr2Mo1,A335P22,St45.8/Ⅲ;
Flange Standard:
ANSI B16.5,HG20617-1997,GB/T9115.1-2000—GB/T9115.4-200,DIN2630-2638,
HG20595-1997,GB/T9115.1-2000,GB/T9115.4-200