Steel butt-welded flange of vessels and apparatuses GOST 28759.3-90

Flanges in accordance with GOST 28759.3-90 are steel butt-welded flanges for vessels and apparatus, which are produced by the Plant of Annular Billets with an inner diameter of 400 to 2000 mm (DN 400 DN 2000 mm) and with a nominal pressure of 0.6 to 6.3 MPa ... Flanges are designed for the installation and repair of tanks, vessels and apparatus, tanks, cracking columns, heating and water supply devices at a working environment temperature from minus 70 ° C to plus 540 ° C, in the chemical, petrochemical, oil refining and other industries.

The use of flanges of vessels and apparatus makes it possible to disassemble containers and reservoirs for preventive maintenance, replacement of filter elements, repair and technical inspection.

Steel butt-welded flanges of vessels and apparatuses GOST 28759.3-90 are made of:

• centrifugal electroslag casting (TsEShL),
• production from rolled rings (forgings),
• plasma (laser or gas) cutting from a sheet.

Butt-welded steel flanges of vessels and apparatus are tested for tensile strength, yield strength and impact strength, mechanical properties are determined in accordance with the requirements of the standard.

The products comply with the requirements of the technical regulations of the Customs Union of the EAEU TR CU 032/2013. The products are supplied with quality certificates.

The warranty period for butt-welded steel flanges for vessels and apparatus is 24 months.