ASTM A105N Blind Flanges,A105 Weld Neck Flange,Slip on Flange
ASTM A105N blind flanges are forged carbon steel flanges used to close the end of pressure piping systems, valves, or pressure vessel nozzles.
The “N” designation indicates the material is supplied in the normalized condition, ensuring improved toughness and consistent mechanical properties for pressure service.
Manufactured in accordance with ASME B16.5, A105N blind flanges are widely used in oil & gas, petrochemical, power generation, and general industrial piping systems.
C&N is a professional manufacturer of steel forged flange in China,A105 Blind flange,Blind raise face flange,ANSI B16.5 blind flange,blind ring joint flange ,A105 Weld Neck Flange,Slip on Flange,Sour service, comply with Nace Mr0175/ISO 15156 standard.
Manufactured in accordance with ASME B16.5 and ASME B16.47, A105N blind flanges are widely used in oil & gas, petrochemical, power generation, and industrial piping systems.
Dimensions & Standards
-
Material Standard: ASTM A105 / ASME SA105
-
Heat Treatment: Normalized (A105N)
-
Flange Standard: ASME B16.5
-
Facing Types: RF, RTJ
-
Pressure Classes:
-
Class 150
-
Class 300
-
Class 600
-
Class 900
-
Class 1500
-
Class 2500
-
-
Size Range: 1/2″ – 24″
-
Manufacturing Process: Forged
ASTM A105
This specification covers standards for forged carbon steel piping components, that is, flanges, fittings, valves, and similar parts, for use in pressure systems at ambient and higher-temperature service conditions
CHEMICAL COMPOSITION % (ASTM A105)
| STEEL DESIGNATION | CHEMICAL COMPOSITION | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SYMBOLIC | C max |
Si | Mn | P max |
S max |
Cu max |
Ni max |
Cr max |
Mo max |
V max |
Nb max |
Cu + Ni + Cr + Mo max |
Cr + Mo max |
| ASTM A105 | 0,35 | 0,10 ÷ 0,35 | 0,60 ÷ 1,05 | 0,035 | 0,040 | 0,40 | 0,40 | 0,30 | 0,12 | 0,08 | 0,02 | 1,00 | 0,32 |
CONCENTRATION LIMITS OF THE ELEMENTS THAT ARE NOT INDICATED IN THE TABLE CAN BE DEDUCED IN THE EN 10020 REGULATION.
| STEEL QUALITY | TENSILE TESTING | ||||
|---|---|---|---|---|---|
| UNIFIED TENSILE STRENGTH R |
DEVIATION FROM PROPORTIONALITY Rp 0,2 min |
ELONGATION A min |
C min |
HB max |
|
| N/mm2 | N/mm2 | % | % | ||
| ASTM A105 | 485 | 250 | 22 | 30 | 187 |
Inspection & Quality Control
ASTM A105N blind flanges are supplied with full inspection and testing, including:
-
Chemical composition analysis
-
Mechanical property testing
-
Heat treatment verification (Normalized)
-
Dimensional inspection
-
Visual examination
-
PMI (Positive Material Identification)
-
Certification: EN 10204 3.1
How to order our Blind Flange?
Blind Flange 1 inch, 150P, RF. Material grade is A105 , B16.5 . QTY: 2 Each.
Blind Flange 2-1/2 inch, 150B, RF. Material grade is A105 , B16.5
Blind Flange 4 inch, 150B, RF. Material grade is A105 , B16.5
Blind Flange 16 inch, 150P, RF. Material grade is A105 , B16.5
ASTM A105N blind flanges provide a reliable and cost-effective solution for pressure piping system isolation.
With normalized heat treatment, compliance with ASME standards, and strict quality control, A105N blind flanges ensure safe and long-term performance in demanding industrial applications.
