Pipe Weld Calculator

Free pipe welding calculator

Pipe Weld Calculator is a professional butt fusion welding parameter calculator for thermoplastic pipe systems. Built for welders, engineers, and contractors working with polyethylene and polypropylene pipe.

Enter your pipe outside diameter and wall thickness, select your material, and the app instantly calculates all welding parameters in accordance with the applicable international standard — including heat-up time, bead-up pressure, soak time, changeover time, and cooling time.

Supported Materials: • HDPE PE80 • HDPE PE100 • HDPE PE100-RC • PE-RT • PP-R • PP-H • PP-B • PP-RCT • PVDF

Based on Published Standards: • DVS 2207-1 (PE pipe welding) • DVS 2207-11 (PP pipe welding) • DVS 2207-15 (PVDF pipe welding) • ISO 21307 (PE butt fusion) • ASTM F2620 (PE heat fusion) • ASTM F3722 (PP heat fusion)

Features: • Instant calculations — no internet connection required • Supports all common SDR/PN pipe series • Live countdown timers for each welding phase • Dark mode support • Reference screen with standard summaries and material guidance • Powered by WTPO Helper

Important: Results are a guide only and must be verified against the applicable welding standard, manufacturer instructions, and the judgement of a qualified welding technician. Not a substitute for professional assessment.