In hydraulic systems, a correctly assembled ferrule-type tube fitting can withstand severe pressure fluctuations — even when the steel tube itself is stressed to the point of deformation, the joint stays leak-free. By contrast, improper assembly directly reduces a joint's pressure resistance and service life, and under extreme conditions can cause tube edge cutting, cracking, and connection failure. To help engineers avoid leakage, rework, and downtime, XYOON has compiled these safety guidelines for correctly installing tube fittings, based on years of field experience.
Never use dirty steel tubes, and make sure no metal chips or debris remain inside the line. Contamination introduced during assembly will travel through the system and damage downstream components.
Do not replace the EO function with standard commercial steel balls, locating pins, or tapered pins. Ferrule and fitting must be used as a tested, matched pair: once they are pre-assembled together, keep them paired.
Excessive torque during installation reduces the fitting's ability to bear pressure and impact loads, eventually leading to leakage. Tighten to the specified value only, and always apply sufficient counter-support when tightening.
Clamp with hard jaw vise grips. Soft jaw grips can distort the tube and compromise the bite, weakening the joint.
Calculate pipeline length and bend angles precisely. Poor geometry creates assembly stress that the fitting cannot absorb, increasing the risk of failure.
Vibration and impact loosen threaded connections over time. Isolate lines from shock and vibration to keep joints secure.
Select fittings according to real operating parameters — pressure, temperature, and media compatibility — and applicable technical standards such as CE, ISO, BG, TUV, and DNV. Keep fluid velocity below 8 m/s to prevent pipeline erosion.
Pre-assembled fittings must never be welded afterward. Only fittings manufactured from weldable materials may be welded, and only when required.
Most of these failures originate at one step: manual ferrule pre-assembly. XYOON — supporting bulk, wholesale, and customized procurement — offers the **Electric Cutting Ring Pre-assembly Flaring Machine KC-A01**, an electro-hydraulic integrated machine that combines ferrule pre-assembling and pipe flaring for metric steel pipes of 6–42 mm. Compared with manual work, it shortens lead time, cuts labor and production cost, and delivers stable, uniform, repeatable pre-assembly quality on every joint — helping you follow these guidelines by design, not by effort.
XYOON welcomes inquiries from global partners for customized hydraulic tube processing solutions.
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