ASTM A182 F304 / F316 Flange | B16.5 Enquiry

• Surface Treatment

  FF
  model number

  1/2"-108"
• Application

  Agricultural Irrigation, Air Conditioning, Chemical Industry, Construction, Environmental Engineering, Fiber Optic Co MMunication
  Bolt Hole Diameter

  11 mm
• Bolt Hole Quantity

  4, 6, 8
  Standard

  Ansi
• Standard or Nonstandard

  Standard
  Product name

  a350 gr lf2 low temperature carbon steel forged flanges
• pass

  ISO9001:2008
  packing

  wooden case or pallets
• loading port

  Tianjin xingang port
  shipment

  by sea
• payment terms

  T/T or L/C
  delivery time

  5-60days

This flange enquiry focuses on ASTM A182 F304 or F316 material requirements and the B16.5 reference in the product title. Identify the exact flange construction and grade needed for your connection before selecting an item. The specification table and images provide enquiry references, while acceptance should depend on records and dimensions linked to the chosen model.

Resolve the socket or closure requirement

For a socket-weld requirement, request a drawing that defines the pipe receiving socket, bore and joint preparation. Give the mating pipe outside diameter and wall dimensions so the connection can be checked. If the requirement is to close a line opening, specify that function and obtain the appropriate closure drawing instead. A photograph of an open centre does not establish the construction of the selected item.

Specify the grade and flange interface

State whether your project requires F304 or F316, the applicable ASTM A182 edition and any associated manufacturing and inspection requirements. Obtain material records traceable to the proposed flange. For a B16.5 interface, provide nominal size, pressure class, facing, flange thickness and the complete bolt pattern. Match these details to the mating component; broad inch ranges, a hole diameter or several hole counts alone cannot define a compatible joint.

Check duty and acceptance evidence

Describe the fluid, operating pressure and temperature, together with sealing and fabrication requirements for the assembled connection. Ask for the selected material and joint rating evidence before accepting a service condition. Where low-temperature assessment or certification is required, request relevant, current records covering the actual item and intended scope. This information lets the enquiry progress from general flange terminology to a specific drawing, material designation and agreed acceptance criteria.