BEIJING, China — Manufactured in Beijing under the JHH brand, this hydrostatic pressure testing unit delivers reliable assessment for plastic and composite pipe specimens. Compatible material grades cover PP‑R, PP‑B, PP‑A, PVC, PE and PE‑X. The equipment achieves measurement deviation within 0.1 % of full‑scale reading, supporting maximum test pressure up to 10 MPa (100 bar / 1450 psi). It evaluates hydrostatic endurance and burst‑resistance performance, serving as core lab hardware for pipe factories and third‑party inspection institutions worldwide.