A kind of pipe flange with a long tapered hub and gentle transition of thickness in the region of the butt weld joining them to the pipe. According to their strong ability of deformation-resistance, they are adapted to high pressure and temperature, PN 0.25~2.5MPa.

Dimention
3/8"～160"
DN10～DN4000

Pressure Class
CLASS 150,CLASS 300,CLASS 400,CLASS 600,CLASS 900,CLASS 1500
PN 6,PN 10,PN 16,PN 25,PN 40,PN 63,PN 100
Seal Surface
FF, RF, T, G, F, M, RJ

Material
CS: A105
Alloy: A182 F 1-F 2-F 5-F 9-F 10-F 91-F 92-F 122-F 911-F 11-F 12-F 21-F 22
SS: A182 304-304H-304L-304N-304LN 316-316H-316L-316N-316LN 321-321H 347-347H
HTS: A522 A707 Grade L 1-L 2-L 3-L 4-L 5-L 6-L 7-L 8
HPS: A694 F 42-F 46-F 48-F 50-F 52-F 56-F 60-F 65-F 70

Standard
ASME B16.5-2009 ASME B16.47-2006
API605-1988
EN1092-1-2007 EN1759-1-2004
DIN2630 DIN2631 DIN2632 DIN2633 DIN2634 DIN2635 DIN2636 DIN2637 DIN2638
BS1560-3.1-1989 BS4504-3.1-1989
JIS B2220-2004

Usage
Electricity, Petrol & Natural Gas, Petrofaction, Chemical Engineering, Shipping, Heating, Paper Making, Metallurgy, etc.