carbon steel blind flanges

BS4504 blind Steel Flange is the least used flange among all flange varieties. Blind flange accounts for about 10% of pipeline Flanges, or even less. BS4504 flange standard is one of the earliest flange standards in the world. , widely used in engineering, most of the blind flanges are steel flanges. Especially PN10 flanges, PN16 low pressure blind flanges are all steel flanges.
   BS4504 blind steel flanges are used in branches, Valves, pumps and other equipment or at the top of each branch of the pipeline system. It provides convenience for pipeline modification, addition, cleaning, inspection and maintenance. Reduced engineering costs.
   BS4504 blind flange and use only need to fasten it with the welded flange at one end of the pipeline with Bolts, without welding, effectively connect pipelines, valves, pumps and other equipment accessories, so that the entire pipeline is All in one, start working normally.
   Blind flanges are rarely used but essential pipe fittings in the piping systems and equipment of machinery, chemical industry, water conservancy, electric power, shipbuilding, air conditioning and other departments.
   Our blind flanges are made of standard materials, finely processed and priced in line with market demand. According to the needs of different markets and different customers, special shaped manufacturing can fully meet the requirements of customers and markets for different flanges. And we will inform customers of market needs so that they can quickly expand the market.
Types of BS4504 blind flanges:
According to the model can be divided into BSTYPE 105 Blind, ENTYPE05 DIN2576
According to the pressure can be divided into PN16. PN10. PN25, PN40, PN63, PN100
According to the process, it can be divided into: forged flange, cast flange, steel plate flange
According to the material can be divided into: carbon steel flange, stainless steel flange, alloy steel flange
According to the production process, BS4504 blind flanges can be divided into: forged flanges, cast flanges, steel plate flanges
1) a: Forged flange
Saw billets of different specifications and models into flange blanks, add them to a reverberatory furnace and heat them to 1000 degrees to take out, and then forge the flange blanks into cake-shaped flange blanks through forging machines such as forging presses and air hammers.
b: Steel plate flange
Put the steel plate into the punching machine, put it into the corresponding mold, and directly punch it into a pie-shaped flange blank.
c: cast flange
Put the low carbon steel standard scrap into the intermediate frequency furnace and heat it to 1200-1500, pour it into the mold
The type is a pie-shaped flange blank.
2) The formed pie flange blank is processed into a ring flange on a CNC machine tool according to the drawing, and then the flange is drilled with a CNC drilling machine according to the drawing requirements, and the finished product is completed.
3) For the finished flange product, the thickness, hole diameter, center distance, inner and outer diameter of the flange shall be inspected according to the drawing requirements.

4) Type the flanges that have passed the inspection on the end face of the flange according to the customer's requirements, and do anti-rust treatment to the flange according to the customer's requirements, 1: paint, 2: anti-rust oil, 3: galvanized, and then install it. In wooden box for shipment.