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Precision Roll Threading of Threaded Bars for Heat Exchangers

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Precision Roll Threading of Threaded Bars for Heat Exchangers
Precision Roll Threading of Threaded Bars for Heat Exchangers

As a family-owned and operated business for close to 100 years, Keystone Threaded Products has performed precision roll threading for a wide range of heat exchanger manufacturers. Over the decades, we've developed an in-depth understanding of the heat exchanger market. Precision roll threading will always be our primary focus but our heat exchanger customers also rely on our secondary processes such as saw-to-length, chamfering, hydraulic straightening and stamping, all to their unique specifications.

A heat exchanger manufacturer required our precision roll threading and related services on eight bars with an outside diameter of 1.75" and a 4 TPI ACME thread. We utilized the appropriate material, a SA-564 GR630 H1150/H1100 and met tolerances of ± 0.25mm (.0098"). After carefully washing the parts to remove any residual dirt and oil particles, We performed the in-process inspection to 2G tolerances as, carefully washed the parts to remove any residual dirt and oil particles, and then completed the additional operations to their specific needs. A final inspection was completed as the last step in the production process.

For more information on this precision roll threading project for the heat exchanger industry see the table below or contact us directly to learn all about our roll threading capabilities.

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Highlights of this Precision Roll Threading Project

Product Description Roll Threaded bars used in the manufacturing of Plate Heat Exchangers
Capabilities Applied/Processes Primary: Roll Threading
What processes were used to manufacture these?
Secondary:
Saw to length
Chamfering
Hydraulic Straightening
Stamping
Washing
Overall Part Dimensions O.D.: 1-3/4"
Length: 3923mm
4 TPI Acme Thread
Tightest Tolerances ± 0.25mm
Material Used SA-564 GR630 H1150 / H1100 Stainless Steel
Material Finish Wash parts to remove dirt and oil particles
In process testing/inspection performed In process inspection to 2G tolerances
Final Inspection
Industry for Use Heat Exchanger Manufacturer
Volume 8 Bars
Delivery/Turnaround Time 3 weeks
Delivery Location Southeastern U.S.
Standards Met Customer Supplied 2D Drawings
SA-564 GR630 H1150 / H1100 Stainless Steel
Product Name 1.75"-4 Tie Bar

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