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Prefabrication Pipe Spools
  • Orifice Flange
  • Orifice Flange
  • Orifice Flange
  • slip on flange

Orifice Flange

  • Type: Orifice Flange
  • Class: 150#-2500#, 150LBS-2500LBS
  • Size: 1/2" (15 NB) to 24" (600NB)

Orifice Flange

Orifice Flange Specification:

Standard Type Class Size
ASME B16.5 WN/LWN/SO/Blind/Lap Joint 150#-2500# 1/2"-24"(Except Blind Flange 2500lb 1/2"-12")
EN1092-1:2002 Plate flange for welding/loose plate flange with weld-on plate collar or for lapped pipe end/Blind Flange/WN flange PN2.5-PN100 DN10-DN4000
Other WN/LWN/SO/SW/blind/plate/threaded/anchor/swivel/girth/lap joint/reducing/orifice
spectacle blind/paddle blind/spacer ring/orifice plate/bleed ring
Speical Products: Rings/Forgings/Disc/Shaft Sleeve
Sealing Surface RF FF RTJ TF GF LF LM
Flange Face Finish Stock Finish/Spiral Serrated/Concentric Serrated/Smooth Finish(Ra 3.2 and 6.3 micrometers)
125-250 AARH(it is called smooth finish)
250-500 AARH(it is called stock finish)
Coating Vanish, yellow paint, anti-rust oil, galvanizing etc

Orifice Flange  Material Grades:

Carbon Steel ASTM /ASME A/SA105(N), ASTM A266 GR.4, ASTM/ASME A/SA350 LF2/LF3,
ASTM/ASME A/SA694 F52, F56, F60, F65, F70
Alloy Steel ASTM/ASME A/SA 182  F5, F9, F11, F22, F91
Stainless Steel ASTM/ASME A/SA 182 F304, 304L, 304H, 310H, 316, 316H, 316L, 316LN, 316Ti, 317, 317L, 321, 321H, 347, 347H, 904L
Duplex and
Super Duplex
ASTM/ASME A/SA 182 F44, F45, F51, F53, F55, F60, F61,
S31803, S32205, S32550, S31254, SMO254, S32750, S32760, S32950
Nickel Alloy Steel ASTM/ASME B/SB 564 UNS N02200(NICKEL 200), UNS N04400, (MONEL 400), UNS N08825( INCOLOY 825), UNS N06600(INCONEL 600), UNS N06601(INCONEL 601), UNS N06625(INCONEL 625), UNS N10276(HASTELLOY C276)
ASTM/ASME B/SB160 UNS N02201(NICKEL 201),  ASTM B/SB472 UNS N08020(Alloy 20)
Copper Alloy ASTM/ASME B/SB151 UNS N07060, 71500, C70600(CuNi 90/10), C71500(CuNi 70/30)
Titanium ASTM/ASME B/SB381 Grade 2, Grade 5, Grade 7

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