GOST silp on/welding neck/blind steel flanges

GOST Carbon Steel Flanges are the most widely used Flanges in the world. The gGOST flange standard is widely used in Eastern European countries including Russia, Belarus, Ukraine, Kazakhstan and the original CIS countries. GOST12820 and GOST12821P flanges are the most widely used Regular, the most popular, is used universally.
   GOST carbon steel flanges are a kind of pipe fittings that connect pipes, Valves, pumps and other equipment to form a piping system. It facilitates the cleaning, inspection and maintenance of pipes. Reduced engineering costs.
   During construction and use, the GOST carbon steel flanges are evenly welded at both ends of the pipeline, and then fastened with Bolts to effectively connect the pipelines, valves, pumps and other equipment accessories, so that the entire pipeline is integrated and starts to work normally.
   In Russia and the former CIS countries, GOST carbon steel flanges are the most widely used pipe fittings in pipeline systems and equipment in machinery, petroleum, chemical, water conservancy, electric power, shipbuilding and other departments.
   Our GOST carbon steel flanges are standardized in 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 GOST carbon steel flanges:
According to the model can be divided into: GOST12820, GOST12821
According to the shape can be divided into: GOST Slip-on FLANGES GOSTWELDING-NECKFLANGES
               GOSTBLINDFLANGES
According to the pressure can be divided into: PN6, PN10, PN16, PN25, PN40, PN63
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
GOST carbon steel flange Carbon steel flange production process:
1) a: Forged flange
Saw billets of different specifications and models into flange blanks, add them to a reverberatory furnace and heat to 1000 degrees to take out, and then forge the flange blanks into ring flanges by forging machines such as forging presses and air hammers, b: steel plate flanges
Put the steel plate into the punching machine, put it into the corresponding mold, and directly punch it into a ring 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 ring flange blank.
2) The formed ring 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.