The blind flange is a blank disc with bolt hole. These types of flanges are used with another type of flange to isolate the piping system or to terminate the piping as an end. Blind flanges are also used as a manhole cover in the vessel.

Production instructions
We can produce Amercian Standard, German Standard, Italian Standard, European Standard, Chinese Standard flanges, also offer all kinds of non-standard flanges according to you drawings, diameter ranging from DN15 to DN3000, press rate up to 2500LBS. Flanges are made of carbon steel, stainless steel, alloy steel, duplex ferric-austenitic steel.
Flange Standard
American Standard | ASME B16.5,ASME B16.47,ANSI B16.5,API605,AWWA C207 |
Japanese Standard | JIS / KS 5K / 10K / 16K / 20K / 30K |
German Standard | DIN2527,2528,2561,2565,2566,2573,2576,2627-2638,2641,2642,2655,2656,2673,86029 |
British Standard | BS4504 PN16 / 25 / 40,BS10 TABLE E / TABLE D |
Italian Standard | UNI 2253,2254,2276,2278,2281,6084-6093 |
China Standard | GB/T 13402-92,GB/T9112-9124-2000,HG5010-5028 |
Production Process

Equipment Exhibition

Product Show


Quality Assurance
Quality System Certificate:
We have Grade A Manufacture License of Special Equipment , Press Equipment Directive Quality-Assurance System Certificate , China Classification Society Certificate of Work Approval, TUV Certificate
Perfect Inspection Process:
Raw material inspection(5steps)- Raw materials testing is to ensure the raw material conforming to the order requirements.
Process testing(10steps)-Each processing step testing is to guarantee each step product qualified.
Factory testing(6steps)-Assure 100% product qualified rate to meet customer's requirements
Contact Us

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The blind flange is a blank disc with bolt hole. These types of flanges are used with another type of flange to isolate the piping system or to terminate the piping as an end. Blind flanges are also used as a manhole cover in the vessel.

Production instructions
We can produce Amercian Standard, German Standard, Italian Standard, European Standard, Chinese Standard flanges, also offer all kinds of non-standard flanges according to you drawings, diameter ranging from DN15 to DN3000, press rate up to 2500LBS. Flanges are made of carbon steel, stainless steel, alloy steel, duplex ferric-austenitic steel.
Flange Standard
American Standard | ASME B16.5,ASME B16.47,ANSI B16.5,API605,AWWA C207 |
Japanese Standard | JIS / KS 5K / 10K / 16K / 20K / 30K |
German Standard | DIN2527,2528,2561,2565,2566,2573,2576,2627-2638,2641,2642,2655,2656,2673,86029 |
British Standard | BS4504 PN16 / 25 / 40,BS10 TABLE E / TABLE D |
Italian Standard | UNI 2253,2254,2276,2278,2281,6084-6093 |
China Standard | GB/T 13402-92,GB/T9112-9124-2000,HG5010-5028 |
Production Process

Equipment Exhibition

Product Show


Quality Assurance
Quality System Certificate:
We have Grade A Manufacture License of Special Equipment , Press Equipment Directive Quality-Assurance System Certificate , China Classification Society Certificate of Work Approval, TUV Certificate
Perfect Inspection Process:
Raw material inspection(5steps)- Raw materials testing is to ensure the raw material conforming to the order requirements.
Process testing(10steps)-Each processing step testing is to guarantee each step product qualified.
Factory testing(6steps)-Assure 100% product qualified rate to meet customer's requirements
Contact Us

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The STL water-jacketed gold concentrator is a kind of gravity separation equipment. It was developed by Changchun Gold Research Institute Co., Ltd. in 1985 and entered the market. At present, it has been used in many domestic and foreign companies. It is suitable for the recovery of single gold in placer gold, vein gold mines and polymetallic mines, instead of mercury plate operations. The addition of large single gold particles in the collected ore before flotation can further increase the recovery rate of gold mines, and it can also be used from gold-bearing mines. Separate single gold from flotation gold-copper concentrate and flotation gold concentrate.
The main indicators of this series of equipment basically reach the level of similar international products (such as Nielsen gold selectors, etc.). Compared with similar equipment at home and abroad, this series of equipment has the advantages of high cost performance, easy operation, and low maintenance costs.
Gold Concentrator,Best Gold Concentrator,Gold Dust Separator Machine,Centrifugal Separator Gold
Changchun Gold Research Institute Co.LTD , https://www.ccgrizbs.com