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Black coated steel weld neck flange, six inch pipe, raised face, twelve bolt holes

Zoro Select

Zoro Select BULK-PF-507 Weld Neck Flange Pipe 6 in Class 300

SKU CH-42RQ-PY5KX

A 6-inch weld-neck flange in Class 300 steel rated for 725 psi at 72°F and service up to 780°F

  • Weld-neck design ensures strong, leak-resistant joints
  • Class 300 rating handles 725 psi at 72 °F
  • A105 steel construction withstands 80 °F to 780 °F service
  • Twelve bolt holes on a 10 5/8 in circle simplify alignment
  • Black-coated finish protects against corrosion in harsh environments

6 in Class 300 Weld Neck Flange

This Zoro Select flange connects a 6 inch nominal pipe through a weld neck design with a raised face. It suits piping systems that require a Class 300 pressure rating and Schedule 80 wall thickness. The component is built from A105 steel with a black coating for corrosion resistance.

Pressure and temperature limits

The flange handles a maximum operating pressure of 725 psi at 72 degrees Fahrenheit and the same rating for steam service. It remains rated across a temperature range from 80 to 780 degrees Fahrenheit. These limits define the safe envelope for process fluids and steam lines.

Bolt pattern and installation

Twelve bolt holes measuring 3/4 inch diameter sit on a 10 5/8 inch bolt circle. The flange outside diameter is 12 1/2 inches with a flange thickness of 1 3/8 inches and an overall length of 12 1/2 inches. The weld neck end requires butt welding to Schedule 80 pipe for a permanent joint.

Highlights

  • Weld-neck design ensures strong, leak-resistant joints
  • Class 300 rating handles 725 psi at 72 °F
  • A105 steel construction withstands 80 °F to 780 °F service
  • Twelve bolt holes on a 10 5/8 in circle simplify alignment
  • Black-coated finish protects against corrosion in harsh environments

Specifications

BrandZORO SELECT

Questions about this item

Which pipe schedule does the Zoro Select BULK-PF-507 match?

The flange is made for Schedule 80 pipe, so choose it when your piping system uses that wall thickness.

What does the 725 psi rating mean once the flange is installed?

It is the maximum operating pressure at 72 degrees F and also the maximum steam pressure the Class 300 flange can handle.

How does the Class 300 rating limit the bolt pattern?

Class 300 dictates 12 bolt holes on a 10 5/8 in bolt circle with 3/4 in hole diameter for this 6 in nominal size.

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