• Corporate vision to become the pipeline industry Toyota
  • Corporate mission to enhance the quality level of Chinese manufacturing
  • Business goals domestic industry first
BS 4504 A181 PN16 Black Paint RF Weld Neck Flange

BS 4504 A181 PN16 Black Paint RF Weld Neck Flange

  • Introduction:Weld neck flange
  • standard:ANSI/ASME B16.5,
  • ANSI/ASME B16.11,BS4504,
  • DIN etc.Sealing face:RF,FF,RTJ.
  • Coating:black paint.Material:stainless steel,
  • carbon steel(A105),alloy steel.

Weld neck flange (also known as a high-hub flange and tapered hub flange) is a type of flange.They attach to the pipe by welding the pipe to the neck of the pipe flange.We mainly produce weld neck flange according to standards:ANSI/ASME B16.5,ANSI/ASME B16.11,BS4504,BS3293,DIN2631,DIN2632,DIN2633,DIB2634,JIS B2220,SABS/SANS 1123,API 6A,6B,6BX,MSS SP-44 etc.

BS4504 A181 PN16 Black Paint RF Weld Neck Flange

BS4504 A181 PN16 Black Paint RF Weld Neck Flange

BS4504 A181 Black Paint RF Weld Neck Flange Pressure:


BS4504 A181 PN16 Black Paint Weld Neck Flange Sealing Face:

Raised Face(RF),Flat Face(FF),Ring Type Joint(RTJ).

BS4504 A181 PN16 RF Weld Neck Flange Coating:

Black paint,yellow paint,vanish oil.

BS4504 PN16 Black Paint RF Weld Neck Flange Material:

Carbon steel: ASTM A105, A181, ASTM A516 GR.60, GR.70, ASTM A694 F42, F46, F52, F56, F60, F65, F70, ST37, ST45.8, C22.8, S235, S235JRG2, P235GH, P245GH, P250GH, P265GH, P355GH, S355J2, 16MN, 20MN, Q235, 20#, CT20, SS400.

Stainless steel: ASTM A182 F304, F304L, F316, F316L, F321, F321H, F304H, F316H, F347H, 1.4301, 1.4306, 1.4401, 1.4404, 1.4541, 1.4571, SUS304, SUS316.

Alloy Steel: ASTM A350 LF2, CL1/CL2, ASTM A182 F5, F9, F11, F12, F22, F91.

Duplex Steel: S31803  /  F51  /  S32205  /  F60  /  1.4462

Super Duplex: S32750  /  F53  /  1.4410  /  S32760  /  F55  /  1.4501

Haihao Group Flange Products Certificate:

BS EN10204 3.1 MTC,ABS,PED 97-23-EC,CE,ISO,API approved.

Haihao Group Flange Products Certificate

In Hebei Haihao,we specialized in producing flange for many years.We have advanced production lines. Products are manufactured by forging, cold pressing, cold forming, hot extrusion, heat treatment, polishing, rubbing, machining and chrome finishing.We manufacture the products as per client’s requirements.Welcome you to contact us at any time.