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Compare ISO 21307, DVS2207/1, and ASTM F2620 standards for HDPE pipe welding. Learn their differences, applications, and advantages for gas, water, and industrial projects.

This blog provides you with the most basic reference on how to choose manual butt fusion welding machine and automatic butt fusion welding machine, allowing you to choose a reasonable butt fusion machine according to different projects and budgets, and bring you corresponding reasonable ROI.