Weldpoly

Weldpoly is a field-ready welding parameter calculator for PE-HD butt fusion pipe joints.

Select your machine, pipe size (OD & SDR), and welding standard — the app instantly calculates all parameters you need:

• Gauge pressure (bead-up & fusion jointing)

• Heater plate temperature range

• Minimum heat soak time

• Maximum heater plate removal time

• Minimum cooling time

• Minimum bead size

• Facing pressure

Supported welding standards:

— ISO 21307 Single Pressure Low Fusion

— ISO 21307 Single Pressure High Fusion

— DVS 2207-1

Features:

• Step-by-step guided welding process

• Built-in machine database with cylinder areas

• Works offline — no internet required

• Metric units

Designed for welding engineers, pipe fitters, and site supervisors working with PE-HD pressure piping systems.

All calculations verified against ISO 21307:2017 and DVS 2207-1 standards.