ASME B16.48 Hastelloy C-276 Spectacle Blind Nickel Alloy Flanges Material Size 2'-24' 1200#

1. What is Spectacle Blind or figure 8 blind?

Spectacle blind is pressure retaining plate with one solid end and one open end connected with small nose piece (small tie bar). Now, look at the image of this blind. As it resembles a pair of eyeglasses or numeric number Eight, Spectacle blind is also known as a figure 8 blind and sometimes refer collectively as figure 8 spectacle blind.

2. Paddle blank or Spade or Slip Blind

Paddle blank or spade is similar to the solid end of the spectacle blind. A handle is welded with the spec blind. See the image.

3. Paddle Spacer or Spacer Ring

Paddle blank or spacer ring is similar to the open end of the spectacle blind. A handle is welded with the blank. See the image.

4. Use of Spectacle Blind, Spades and Spacers

Spectacle Blind, Spades and Spacers are used to provide flexibility during maintenance an operation. Therefore, it is essential to consider this during design of Piping system. Blanks are installed in horizontal line. In general, you can see the use of spectacle blind flange at following location;

. At inlets and outlets of static equipment

. At inlets and outlets of rotary equipment

. At inlets and outlets of fired heater and common headers

. In bypass line

. At unit battery limit

5. Spectacle Blind Flange Class & Types

ASME B16.48 standard that covers Line Blanks. This standard covers the Spectacle Blind, Spades and Spacers with pressure class 150, 300, 600, 900, 1500, and 2500 as listed in ASME B16.5.

6. Spec blinds are available in the following face type;

. Raised Face

. Female Ring-Joint Blanks

. Male Ring-Joint Blanks

7. More Information about C276

Hastelloy Alloy C276 Pipe Flanges Chemical Composition

Hastelloy C276 Plate Flanges Mechanical Properties

Equivalent Grades for C276 Hastelloy Industrial Pipe Flanges

8. Hastelloy Flange Standards / Types And Pressure Class :

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FAQ

Q1: Are you a factory or a trade company?
A1: We are a professional manufacturer for designing and producing of Large-size products.(View Mor)

Q2: Do you make customized products or finished parts?
A2: All parts are custom made only, and in stock, we can produce based on your drawings.

Q3: Will my drawing be e after you get it?
A3: Yes, we will not release your design to third party unless with your permission.

Q4: What is the MOQ?
A4: Small order is acceptable, but the more, the cheaper.

Q5: How about the samples?
A5: We are happy to make prototype part or sample for clients to ensure quality standard, but it’s charged according to your drawing.

BoYue Industrial (Shanghai)Co., Ltd. is a professional, young and dynamic enterprise. Adhering to the concept of “survival by quality, development by innovation, cooperation by service”, we provide customers with reliable quality, reasonable price and stable delivery time.

Our main products include steel plate series, pipe series, pipe fittings series, flange series and other related products.

We have a complete sales team, technical team, after-sales service team and large and reliable supply factory, all kinds of certificates. Make sure you get the most reliable products, the most professional technical support and attentive service.

We welcome friends from all over the world to visit our company.

In order to comply with the global modernization services development trends and eliminating the varieties distress of the global enterprise‘s purchase in the consumables, which especially BoYue in products. We coordinate the pressure pipe manufacturer which with the scale of production, quality control and high cost performance (has passed ISO 9001 quality series attestation, ccs, DNV,PED/97/23/EC,AD2000-WO, special equipment manufacturing license,ASME-SA182,) through a variety of effective assort mechanism to make up the shortage of supply and Post-processing of VAT enterprise, and to supply high quality pipe fittings, because of the superior quality and good service, we have established long term business cooperation with more than 30 countries and areas,which covers Europe, Africa, South America, North America, Middle East, Taiwan and South East Asia and so on.

With many years effort and support from our valuable customers, these products have obtained a big market share in the world. Our business principle is "Superior quality, Competitive price, Timely delivery and Considerate service " Standing to the principle of “Enterprises focus on the core business”, we will actively promotes the globalization of business strategy approach, using advanced supply chain management technology to service for clients with higher quality and more competitiveness ‘ s products. At the same time, we sincerely reply your inquiry, honesty waiting for your visiting and wish to have cooperation with you at the any time. We welcome all the customers to contact us for more information. We assure you, with our technical knowledge and experience, our company will be one of your Stable, Continuate business partner in China!

Our main products as follows:

Stainless steel pipe & tube

(seamless pipe / welded pipe / square pipe / rectangular tube,duplex stainless / inconel tube)

Carbon / alloy steel pipe & tube

(seamless pipe / ERW / SSAW / LSAW / UOE / hollow section pipe / Galvanized Pipe)

Tubing and casting

(line pipe,water pipeline,gas pipeline,oil pipeline)

Special steel tube

(copper tube/titanium tube/aluminium tube/nickel alloy )

Flange

(DIN flange/ AISI flange/blind flange/welding flange/stainless flange/slip on flange)

steel sheet / coil

(stainless steel/carbon steel/alloy steel/galvanized steel/aluminium )

Valve

(ball valve/gate valve/butterfly valve/globe valve/swing check valve/ check valve)

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