Product name Specification Material Steel factory/Origin price (yuan/ton) Than yesterday Last week Hot rolled coil 2.75mm*1250*C Q235 Steel 5700 0 0 470 Hot rolled coil 3.0mm*1500*C Q235 Tangsteel 5600 0 0 450 Hot rolled coil 3.0mm*1250*C Q235 Angang 5600 0 0 500 Hot rolled coil 3.5mm*1250*C Q235 Angang 5410 0 0 560 Hot rolled coil 2.0mm*1250*C ZJ400 Bead steel 5900 0 0 400 Hot Rolls 3.2mm*1250*C ZJ400 Beads 5450 40 40 600 Hot Rolls 5.75*1500*C Q235 Tangshan Steel 5360 0 -20 560 Hot Roll 5.75*1500*C Q235 Shan Steel 5360 0 -20 560 Hot Roll 5.75*1500*C Q235 Benxi Steel 5360 0 -20 560 Cold Rolled Plate 1.0mm*1000*2000 Q195 Angang 6550 0 0 650 Cold Rolled Plate 1.0mm*1250*2500 Q195 Angang 6550 0 0 650 Cold Rolled Plate 2.0mm*1250 *2500 Q195 Angang 6550 0 0 650 Cold rolled plate 3.0mm*1250*2500 Q195 Angang 6550 0 0 650 Cold rolled coil 1.0mm*1250*Cmm Q195 Masteel 6430 0 0 630 Cold rolled coil 1.0mm*1250*Cmm Q195 package Steel 6430 0 0 650 Cold rolled coil 1.0mm*1250*Cmm Q195 Handan Steel 6430 0 0 650 Medium Medium Plate 6mm Q235 New Steel 6500 -20 100 740 Medium Medium Plate 8mm Q235 New Steel 6430 -20 100 740 Medium Medium Plate 10mm Q235 New Steel 6130 -20 100 740 Puzhong Plate 14-20mm Q235 New Steel 5980 -20 100 740 Puzhong Plate 10mm Q345 Handan Steel 6130 -20 100 740 Puzhong Plate 12mm Q345 Handan Steel 6030 -20 100 740 Puzhong Plate 16-25mm Q345 Handan Steel 5980 -20 100 740 Strip 154mm*2.5 Q195 Guofeng 5050 0 0 350 Strip steel 235mm*2.5 Q195 Rayfont 5050 0 0 350 Strip steel 178mm*2.3 Q195 Guofeng 5080 0 0 350 Strip steel 232mm*2.5 Q195 Jianlong 5060 0 0 310 I-beam 16# Q235 A steel 5200 0 250 670 I-beam 25# Q235 Angang 5250 0 100 540 Channel 16# Q235 Liusteel 5300 0 100 500 Channel 28# Q235 Angang 5300 0 50 450 Angle 40*4mm Q235/Shougang 5500 0 160 650 Angle 50*5mm Q235 Nanchang 5400 0 110 600 Color Coil 0.426*1000*C CGCC Hua Guan 0 0 0 Color Coil 0.426*1000*C SGCC Shun Pu 8100 0 0 550 Color Coil 0.476*1000*C SGCC Shun Pu 7950 0 0 600 Galvanized Roll 0.5*1000*C SGCC Pangang 6600 0 0 500 Galvanized coil 0.6*1000*C SGCC Benxi Steel 6550 0 0 600 Galvanized coil 0.7mm*1000*C SGCC Angang 6530 0 0 680 Galvanized coil 1.0mm*1000 *C SGCC Angang 6450 0 0 700
Spectacle Flange consist of a connected ring (spacer) and a plate (spade).We are manufacturer of Blind Flanges and supply high quality Blind Flanges in both large and small quantities worldwide and offer you the best prices in the market.
Spectacle blinds
Spectacle Blinds are generally applied to permanently separating pipe systems, or just to connect with each other. A Spectacle Blind is a steel plate cut into two discs of a certain thickness.
The two discs are attached to each other by section of steel similar to the nose piece of a pair of glasses. One of the discs is a solid plate, and the other is a ring, whose inside diameter is equal to that of a flange.
A spectacle blind or spec blind, is a safety device used to isolate a section of line or piece of equipment when the line or equipment needs to be inspected or removed from service. It is different than a valve in that the blind is a permanent or long term isolation device.
A spectacle blind is machined from a single piece of metal that is cut to match the pipe size, fit between two pipe flanges and requires an additional Gasket when it is installed. Also, the bolts will need to be lengthened depending on what piping class and size blind is used. The thickness of the spectacle blind is specified based on the line pressure and pipe size.
The specification that determines the dimensions of a spectacle blinds is ASME B16.48 - Line Blanks. A line blank conforming to this standard will be marked in the following way:
ANSI B16.5
Nominal Pipe Size (NPS)
Nominal Pressure Class
Material
Manufacturer's Name
If RTJ, the ring number
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
Spectacle Blind Flange
Spectacle Blind Flange , Figure 8 Flange , Spacer & Spade , Spectacle Blank , Pandle Spacer
Shijiazhuang Bang dong Pipeline Technology Co,Ltd. , https://www.bd-pipefitting.com