Longrun technical journal

Pipeline knowledge for better project decisions.

Practical notes for engineers, EPC teams and industrial buyers sourcing pipe fittings and engineered pipeline components.

Established 20054 articles

Featured insight

Start with the specification.

Product GuidesQuality & InspectionProcurementEngineering Notes
01 / 04
Field notes2005

2026
Product GuideSeptember 20266 min read

How to Specify Butt-Weld Fittings for Industrial Projects

A clear specification reduces technical clarification, quotation risk and production delay.

Read the article
025 min read

Quality & Inspection

What Material Traceability Should Look Like in a Project Order

Traceability connects incoming material, manufacturing records, testing and final product identification.

Read article
034 min read

Procurement

Preparing a Pipe Fitting RFQ: A Practical Checklist

The right inquiry data helps suppliers respond faster and makes quotations easier to compare.

Read article
046 min read

Engineering Notes

Large-Diameter Bends: Five Inputs That Define Manufacturability

Diameter alone does not determine whether a bend can be produced reliably and economically.

Read article

Project support

Have a specification to review?

Contact our export team