Stainless Steel Threaded Flange

Threaded Flanges are similar to slip-on flanges in outline, but the bore is threaded, thus enabling assembly without welding. This obviously limits its application to relatively low pressure piping systems. Threaded Flanges may be welded around the joint after assembly, but this is not considered a satisfactory method of increasing the flanges' pressure applications.
Specification of Stainless Steel Threaded Flanges:
1. Stainless Steel: ASTM A 182, A 240
2. Grade : F 304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H,904L, Duplex stainless steel UNS S31803, 2205, Super Duplex stainless steel UNS S32750
3. Size: ANSI B 16.5 from 1/2" to 24" and classes150 to 2500 (complete range)
4. Pressure: ANSI class 150 to 2,500
 
Sealing surface forms of Stainless Steel Threaded Flanges:
Raised face (RF)
The scope of European system for stainless steel flanges

Sealing surface type	Nominal pressure PN / MPa
	(Bar)
	0.6	1.0	1.6	2.5	4.0
	-6	-10	-16	-25	-40
Raised face (RF)	DN10-50

The scope of American system for stainless steel flanges

Sealing surface type	Nominal pressure PN (MPa)
	(Class)
	2.0	5.0	11.0	15.0
	Class 150	Class 300	Class 600	Class 900
Raised face (RF)	DN15-150		DN15-600
	(1/2 "-6")		(1/2 "to 24")

Applications of Stainless Steel Threaded Flanges:
These flanges are used in special requirements to work under high temperature and pressure, making sure no welding joint is made at the assembly.

Package of Stainless Steel Threaded Flanges:
The stainless steel flange products are packed according to the international standards and regulations as well as to customer's requests. We would take great care to avoid any damage during storage or transportation of the stainless steel flanges.