Product illustration; final geometry follows the approved drawing.
Confirm the neck bore, weld preparation and mating pipe wall together. Identify the required flange facing on the drawing.
Selection reference: Weld neck flanges / Slip-on flanges / Blind flanges Product series — GOST 33259 / GOST 12820 / GOST 12821 · PN6 / PN10 / PN16 / PN25 / PN40.
The listed values are alternatives within a series, not one combined specification. Identify the required combination.
Selection identifiers: Specified standard: GOST 33259 / GOST 12820 / GOST 12821; Pressure designation: PN6 / PN10 / PN16 / PN25 / PN40.
Confirm the neck bore, weld preparation and mating pipe wall together. Identify the required flange facing on the drawing.
Specify the pipe outside diameter and flange bore. Confirm the fit, facing and weld arrangement before ordering.
For a closed pipe end, confirm the mating flange drilling, facing and required thickness. State whether any tapping or opening is required.
Please confirm before quotation: Material / grade / Size designations.
| Product forms | Weld neck flanges / Slip-on flanges / Blind flanges |
|---|---|
| Specified standard | GOST 33259 / GOST 12820 / GOST 12821 |
| Pressure designation | PN6 / PN10 / PN16 / PN25 / PN40 |
| Catalogue reference | HC-0242 |
Confirm the material grade, dimensions, pressure class and standard together against the approved drawing before ordering. Schedule denotes wall thickness, not a pressure rating.
Send a bill of materials or drawing with item quantities, material grades, dimensions, standard and edition, inspection documents, packing and destination. Identify any requirements that still need technical review.
Contact our sales teamWeld neck flanges / Slip-on flanges / Blind flanges Product series — GOST 33259 / GOST 12820 / GOST 12821 · PN6 / PN10 / PN16 / PN25 / PN40 — Include the material grade, dimensions, applicable standard and quantity.
Specified standard: GOST 33259 / GOST 12820 / GOST 12821 The applicable standard, mating components and project design conditions must be reviewed together. Size, rating and material combinations are confirmed in the agreed quotation or drawing.
List the material certificates, inspection records and traceability documents required by your project. Their scope and availability must be agreed before ordering.
Include the material grade, dimensions, applicable standard and quantity.
Confirm the neck bore, weld preparation and mating pipe wall together. Identify the required flange facing on the drawing.
Confirm the neck bore, weld preparation and mating pipe wall together. Identify the required flange facing on the drawing.
Confirm the neck bore, weld preparation and mating pipe wall together. Identify the required flange facing on the drawing.
Send us your drawings or specifications — our engineers will reply with a competitive quotation within 24 hours.
