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.