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Blind flange and spacers are effective methods for blocking the flow of pipeline systems, which can prevent pollution, facilitate maintenance, or control flow,
The Spectacle Blind Flange combines these two commonly used components to provide a single solution for your routing and flow control needs, especially when forward closure is required.
They are a combination of blade blanks (also known as spades or sliding blinds) and blade spacers (also known as spacer rings). One surface provides complete closure for the pipeline system, while the other surface includes a ring that matches the inner diameter of the connected pipeline.
Instead of using a handle, web, or lever on each ring, a small nose piece or lever is used to connect them together.
The final effect looks like an eight character shape, or similar to the name of the component - a pair of glasses
Standard | Type | Class | Size |
ASME B16.5 | WN/LWN/SO/Blind/Lap Joint | 150#-2500# | 1/2"-48" (Except Blind Flange 2500lb 1/2"-12") |
SW flange | 150#-1500# | 1/2"-3" (Except 1500# 1/2"-2 1/2") | |
Threaded | 150#-900# | 1/2"-24" | |
1500# 2500# | 1/2"-2 1/2" | ||
ASME B16.47 Series A | WN/blind flange | 150# -900# | 22"-48" (Except 900# Size:26"-48") |
ASME B16.47 Series B | WN/blind flange | 75#-300# | 26"-48" |
400# 600# 900# | 26"-36" | ||
DIN2527 | Blind flange | PN6-PN100 | DN10-DN1000 |
DIN2543 | SO flange | PN16 | DN10-DN1000 |
DIN2544 | SO flange | PN25 | DN10-DN1000 |
DIN2545 | SO flange | PN40 | DN10-DN500 |
DIN2565 | Threaded flange with Neck | PN6 | DN6-DN200 |
DIN2566 | Threaded flange with Neck | PN16 | DN6-DN150 |
DIN2567 | Threaded flange with Neck | PN25 PN40 | DN6-DN150 |
DIN2568 | Threaded flange with Neck | PN64 | DN10-DN150 |
DIN2569 | Threaded flange with Neck | PN100 | DN10-DN150 |
EN1092-1:2002 | Plate flange for welding/ loose plate flange with weld-on plate collar or for lapped pipe end/Blind Flange/WN flange | PN2.5-PN100 | DN10-DN4000 |
JIS B2220 | Welding flange, lap joint flange, threaded flange | PN6-PN100 | DN10-DN1500 |
BS4504 BS10 TableD/E | Plate Flange for welding/ WN flange/blank Flange | PN6-PN100 | DN10-DN1500 |
Other Products | Anchor/swivel/girth/l ap joint/reducing/orifice | ||
Spectacle blind/paddle blind/ spacer ring/orifice plate/bleed ring | |||
Special Products: rings/ forgings/disc/shaft sleeves | |||
Sealing Surface | RF FF RTJ TF GF LF LM | ||
Flange Face Finish | Stock finish/spiral serrated/ concentric serrated/smooth finish (Ra 3.2 and 6.3 micrometers) | ||
125-250 AARH(it is called smooth finish) | |||
250-500 AARH(it is called stock finish) | |||
Coating | Vanish, yellow paint, anti-rust oil, galvanizing etc | ||
Material Grade | Nickel Alloy Steel | ASTM/ASME B/SB564 UNS N02200(NICKEL 200), UNS N04400(MONEL 400), | |
UNS N08825( INCOLOY 825),UNS N06600(INCONEL 600), | |||
UNS N06601(INCONEL 601), UNS N06625(INCONEL 625), UNS N10276(HASTELLOY C276), | |||
ASTM/ASME B/SB160 UNS N02201(NICKEL 201), ASTM B/SB472 UNS N08020(Alloy 20) | |||
Copper Alloy | ASTM/ASME B/SB151 UNS C70600(CuNi 90/10), C71500(CuNi 70/30) | ||
Stainless Steel | ASTM/ASME A/SA182 F304,304L,304H,309H,310H, 316,316H,316L,316LN, | ||
317,317L,321,321H,347,347H | |||
Duplex and Super Duplex Steel | ASTM/ASME A/SA182 F44,F45,F51,F53,F55,F60,F61 | ||
Carbon steel | ASTM /ASME A/SA105(N) | ||
Low Temp Carbon Steel | ASTM/ASME A/SA350 LF2 | ||
High Yield Carbon Steel | ASTM/ASME A/SA694 F52,F56 F60, F65, F70 | ||
Alloy Steel | ASTM/ASME A/SA182 GR F5, F9, F11,F12,F22,F91 | ||
Titanium | ASTM/ASME B/SB381 Grade 2, Grade 5, Grade 7 |
What can we do for you ?
>> 1.Are you a factory or a trading company?
1.We are a factory focused on rigging hardware over 22 years.
2.Our main products are shackles,eye bolts and nuts. turnbuckles, wire rope clips, hooks and load binders.
3.We have 6 production lines with advanced machines over 30 like friction presses, air hammer, punching machines,etc.
4.We own warehouse over 3000 square meters.
5.We have numerous distributors at home and board.
>> 2.How do you control your quality?
1.Selection of high-quality steel material from famous steel group
2.Production process standardization, process standardization, refinement.
3.100% Finished Product Testing.
4.The third party product inspections are acceptable.
5.ISO Quality Management System Certificated Factory
6.Inspection before loading
>> 3.What are your advantages compared with others?
1.BV, SGS Field Certification and Assessed Factory
2.Focused on rigging since 1997, Rich experience in Production.
3.Owned factory, the same quality product, the best price.
4.Timely Delivery with the support of 3000 square meters warehouse.
5.Numerous Patents in Rigging Hardware. Be Good at Custom-Made and Shaped Products.
6.Over 20 Professional Staff in Trading Team,Let you enjoy worry-free and effective communication.
>> 4.Can you offer samples ?
Yes, free samples are available, but freight charged by customer
>> 5.How about your quality guarantee?
We’re 100% responsible for damage of full container goods if it’s caused by our improper package.
We have very strict QC team to control the quality problem.
From material to finished products, each step, our inspection man to inspect it.For each order, we will test and have the record.
>> 6.Why choose us?
1). More than 20 year's manufacturing experience
2). OEM/ODM service offered • Small order accepted
3). Direct factory price • More competitive
4). High Quality • Zero Complaint