Standards & Types:
1) PN6, PN10, PN16, PN25, PN40, flat flange, plate flange, plain flange (Code101).
2) PN6, PN10, PN16, PN25, PN40 Loose flange, Lapped Flange.
3) PN6, PN10, PN16, PN25, PN40 BLIND flange, Blank Flange (Code111).
4) PN6, PN10, PN16, PN25, PN40 Welding Neck Flange, WNRF flange, Welded Neck flange (Code111).
5) PN6, PN10, PN16, PN25, PN40 Slip on Bossed Flange, SORF Flange (Code112).
6) PN6, PN10, PN16, PN25, PN40 Threaded Flange, Screwed Flange (Code 113).
Material:
CARBON STEEL: P245GH, P250GH, P265GH, C22.8, RST37.2, S235JRG2, A105, 1.0460, 1.0352, 1.0038, 1.0432, Q235B etc.
STAINLESS STEEL: 304, 304L, 316, 316L, 1.4404, 1.4306, 1.4307.
Surface Antirust:
Surface antirust 1: Antirust light oil
Surface antirust 2: Black paint coating
Surface antirust 3: Yellow paint coating
Surface antirust 4: Galnavized (Hot galvanized or Cold galvanized or Electro Galvanized)
Surface Finish:
Surface finish 1: Stock finish
Surface finish 2: Sprial serrated
Surface finish 3: Two or three grooves (Water Lines)
Surface finish 4: Smooth finish
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BS4504 Flange