Carbon Steel NPT Half Coupling for Plumbing

• warranty

  1 year
  customized support

  OEM, ODM
• Technic

  Casting
  Connectivity

  Other
• shape

  Reducing
  head code

  Other
• Overall Length

  4 in
  Surface Treatment

  Smooth
• Pressure

  Low Pressure
  System of Measurement

  inch
• Mounting hole diameter

  0.26 in
  Pipe Features

  Flexible, Corrosion-resistant, Chemical Resistant, Uv Resistant, No additional Features, underground rated
• Pipe Class

  3000
  Application

  Agricultural Irrigation, Automotive Repair, Heating Systems, Power Industry, Construction Engineering, Shipbuilding, petrochemical industry
• Thread Types

  NPT

This carbon steel NPT half coupling is listed for plumbing enquiries. The title describes forging and a half-inch size, but the table says Casting and the only variant is 10 mm. Resolve the manufacturing route and dimensions before treating the listing as a confirmed order specification.

Confirm half-coupling geometry and exact sizing

Provide a drawing showing the half-coupling arrangement, nominal connection, wall, thread dimensions and tolerances. Clarify the Reducing entry and verify the selected configuration is available. The half-inch title and 10 mm option cannot be assumed equivalent without a documented dimensional basis.

Allocate the 4 in length and 0.26 in hole to actual features, with installation clearance and the selected sizing convention. Confirm the full NPT designation, engagement, mating component, sealing and thread inspection. The general thread label does not establish compatibility with a particular installation.

Resolve production records and the pressure reference

Identify whether the ordered component is forged or cast and obtain the corresponding manufacturing and inspection records. Specify the complete carbon steel designation, condition, traceability and governing ASTM document and edition. The general ASTM wording does not identify a complete material specification or certification.

The title pressure reference and Class 3000 table entry need separate clarification. Confirm the intended rating basis at the selected material and temperature rather than treating the pressure wording and class number as interchangeable. Low Pressure does not resolve that missing acceptance basis.

Document plumbing conditions and environmental evidence

State actual medium, numerical duty, temperature, cycling, corrosion exposure and loads. Define Smooth finish and delivery protection. Underground use and flexibility, chemical or UV resistance require relevant selected evidence; clarify which features apply. Agree material/joint acceptance with the resolved size, production, thread, pressure basis and testing package in the quotation.