FLANGE COLLAR GOST 12821-80
Manufacturing materials:
1.Claleric steel: st20, 09g2s.
2. Nerbavia steel: 12x18n10T, 08x18N10T, 13XFA, 10x17N13M2T, 06HN28MDT.
3.Priest steel: A105, A181, A182, A350, AISI 304, AISI 304L, AISI 316, AISI 316L, AISI 316TI, AISI 321, etc.
The collar flanet is an important part of the pipeline system equipped with an additional element - a “skirt” ring that provides a junction of the flange with a pipe. After the docking, the connection is fixed and strengthened by the welding seam, which guarantees its reliability and tightness.
Flanges are produced taking into account the execution of sealing surfaces:
Execution 1 - with a connecting protrusion.
Execution 2 - with a protrusion.
Fulfillment 3 - with a hollow.
Execution 4 - with a spike.
Execution 5 - with a groove.
Execution 6 - under the lens.
Execution 7 - for laying oval section.
Execution 8 and 9 - with a spike and a groove for a fluoroplastic gasket.
