B16.9 Carbon Steel Eccentric and Concentric Reducer

• warranty

  3 Years
  customized support

  OEM, odm
• Technic

  Forged
  Connectivity

  Welding
• shape

  Reducing
  head code

  Other
• Overall Length

  1/2"-4"
  Height

  1/2"-4"
• Surface Treatment

  Polished
  Pressure

  Low Pressure
• System of Measurement

  Metric
  Mounting hole diameter

  1/2"-4"
• Pipe Features

  Corrosion-resistant
  Pipe Class

  Other
• Application

  Other
  Thread Types

  NPT

This B16.9 carbon steel reducer listing provides eccentric and concentric options as an enquiry context for plumbing projects. Actual DN150, DN125 and DN100 variants each identify a single nominal size. Specify the complete reducing pair and chosen profile before converting the listing into an order.

Confirm the selected reducer drawing

Identify both larger and smaller nominal ends, outside diameters, bores and wall requirements. Agree transition length/profile, tolerances and offset or orientation where the chosen construction requires them. A DN label does not establish measured diameter, and the current variants do not separately select eccentric or concentric geometry.

Overall Length, Height and Mounting hole diameter repeat half-inch-to4-inch ranges. Obtain explicit allocation to the individual drawing rather than using those entries as measured geometry or proof of holes. Confirm supply of the selected end-size pair and profile.

Identify the ASTM document and supplied reducer ends

The title’s ASTM reference lacks a document number and grade. Request the actual material specification, condition, traceability and certificates without assuming A234 WPB. Agree the governing B16.9 edition and applicable configuration, with manufacturing evidence supporting forged construction.

Welding and NPT fields require clarification of the actual supplied ends and mating pipes; do not assume a combined threaded/welded reducer. Define joining preparation and inspection. Specify polished surfaces and finish acceptance without treating corrosion-resistant wording as proof of a particular protective treatment.

Set the plumbing service requirements

Plumbing wording does not certify drinking-water suitability. Low Pressure and Other class leave numerical operating limits unconfirmed. State fluid, pressure, temperature, cycling, loads and corrosion compatibility. Obtain system acceptance, then agree alignment, inspection, marking, required records, individual availability and quotation scope.