Product description
Blind flange is also called blind board, and its proper name is flange cover. It is a flange without holes in the middle for sealing the pipe plug. There are many types of sealing surface, such as
rise face, ring joint face, large or smalltongue face and groove face, large or small male face and female face. Blind flanges are mostly used to seal the end or opening of a pipe, which is why
they come without a bore. This comes in handy for inspection and pressure tests, as it allows quick access to the pipe.
Blind Flange Forming:
Forged
Blind Flange Material
Stainless Steel:
OCr18Ni9, 0Cr18Ni9Ti, 1Cr18Ni9Ti, 0Cr18Ni12Mo2Ti, 00Cr19Ni10, 00Cr17Ni14Mo2, ASTM A182-F304, F304L, F304H, F316, F316L, F321, F321H, F347H, F317,
Super austenitic stainless steel：
ASTM A182-904L, 317, 317L
Duplex Stee：
ASTM A182-F51, F53, F44
Special steel ：
N06600, N08800, N08811
Alloy Steel:
16Mn, 12CrMo, 15Cr5Mo, Cr5Mo, 12Cr1MoV, ASTM A182-F11, F22, F91 F9 F5
PIPE LINE：
ASTM A694-F42, F46, F48, F50, F52, F56, F60, F65, F70, F80
Carbon Steel ：
ASTM A350-LF2, LF3 Q235A, 20#, ASTM A105
Blind Flange Standard &Size &Rate
DIN2527: DN10-DN500
ASME/ANSI B16.5: 1/2"-24" 150LB 300LB 600LB 900LB 1500LB
1/2"-12" 2500LB
ASME B16.47 SERIE A/B: 26"-28" 150LB 300LB 600LB 900LB
Blind Flange Tests and Inspections
Analytic instrument of C&S
Machine Performance Test
Chemical Composition Analysis
Permeation Test
Ultrasonic Test
Metallographic microscope Test
Intergranular Corrosion Test
Hardness Test
Flattening Test
Ferrite test
Impact Test(Low temperature, Normal temperature,-196 temperature.)
Test methods for pitting corrosion resistance
X-ray flaw detection
Magnetic particle inspection
Blind Flange Documentation Offered
Raw Material Test Report
EN10204 3.1 Test Certificate
Heat Treatment Chart
Heat Treatment Report
Quality Assurance Plan
Inspection and Test Procedure Report
Blind Flange Application
steel blind flange uses in oil and gas pipeline
Blind flange uses in chemical industry
Alloy steel blind flange uses in plumbing
BLRF flange uses in water supply systems
Asme b16.5 blind flange uses in power plant
Nickel alloy flange uses in paper industry
Monel 400 blind flange uses in general purpose applications
Monel 800 blind flange uses in fabrication industry
254Mo blind flange uses in petroleum
C-276 blind flange uses in papermaking
Alloy 20 blind flange uses in shipbuilding
High quality blind flange uses in petrochemical
Dulex steel blind flange uses in natural gas industry
Super duplex steel blind flange uses in ocean engineering
Duplex steel 45 degree elbow uses in nuclear industry
Hastelloy raised face blind flange uses in food and beverage
Raised face blind flange uses in electrical powerplant
Ss blind flange uses in pharmacy.
