ASME B16.48 A105 F304/L F316/L F51 F56 Figure-8 Blank and Spectacle
Blind FlangeProduct introductionFigure-8 Blank, also known
as figure 8 flange or spectacle blind flange which is
combination of the two that can be rotated to function as Single
Bind or a Ring Spacer. This kind of flange is generally a piece of
metal than is cut to fit between two pipe flanges and usually
sandwiched between two gaskets a spectacle blind is often made from
two metal discs that are attached to each other by a small section
of steel. The shape is similar to a pair of glasses or spectacles -
hence the name spectacle blind flange. One end of the blind will
have an opening to allow flow through the pipe during operation and
the other end is solid to block flow during maintenance. They are
generally installed as a permanent device to separate process
piping system.Spectacle Blind Flange is usually used on
the oil line with two different functions:If the spade is put in
between the flanges, it stops the fluid's passage;If the spacer is
put in between the flanges, the passage of the fluid is
allowed.SpecificationTypesSpectacle Blind Flange/Figure-8
Blank/Figure-8 Flange StandardsASME B16.48MaterialsCarbon steel
A105, A516 Gr. 60/65/70, A350 LF2, A694 F60-65, stainless steel
A182 F304/304, F316/316L, alloy steel AISI Gr.1, Gr.5, Gr.9, Gr.91,
Gr.11, Gr.22,duplex stainless steel F51, F53, F55,
F44,DimensionsFrom 1/2" NPS to 24" NPSPressure ClassFrom class 150
to class 2500, PN6, PN10, PN16, PN25, PN40, PN64 Face Type
Flat Face (FF), Raised Face (RF), Ring Type Joint (RTJ)Surface
treatmentPolished version on request Inspection/testDirect-reading
Spectrograph, Hydrostatic testing machine, X-ray detector,
Ultrasonic flaw detector, Magnetic particle detectorMill's
certificateEN10204 3.1 Marking Buyer or seller's
logo/standard/material/dimension/heat noPacking In wooden case or
carton box depends on quantity Lead time 3 days for stock,
15-20days for fresh production depends on quantityCompany
ProfileFrom 1989 to now, Kingmetal Steel focus on manufacturing and
distributing pipeline products including piping, fitting, flange,
valve and fastener in stainless, carbon, alloy and duplex steel.
Kingmetal has a factory to manufacture seamless stainless steel
pipe from DN6 to DN600 and distribute seamless steel pipe and
fitting from top brand manufacturers such as Baosteel, Hengsteel,
Tiansteel and Pansteel etc.All of products are strictly compliance
with standard, 100% inspection passed including visual, dimension
and PMI test before shipment.Both our sales and logistic teams are
over 10 years of experiences and training frequently.After- sales
service with high efficiency, if any products are short
quantity/weight or damaged caused by manufacturing, design or
transportation can be compensated.Inspection Why choose
us?One-Stop SolutionWe have thousands of total production
experience, from raw materials to finished products.Competitive
PriceLarge scale purchase, standardized production process and
efficient management make our price competitive.Quick ShippingYears
of export experience enable us to control the transportation time
more accurately.Quality ControlThe standardized production process,
comprehensive management system, professional testing
equipmentSpecial material customizationWe support the customization
of various complex materialsOEM/ODMWe support any form of OEM/ODM
customization requirements. /* March 10, 2023 17:59:20
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