Ports are soaked in salty sea air, and regular cylinders just can’t handle it. Most start rusting within 3 months, their seals crack, and oil leaks become a daily hassle. Take Ningbo Port’s stacker-reclaimer team – they used to stop operations every 2 months to swap out seals. Each repair took 3 hours flat, slowed cargo handling by 20% that day, and piled on extra labor costs no one wanted to cover.
Container cranes lift hundreds of loads a day, and stacker-reclaimers run 8+ hours straight. Regular cylinders tap out after a year – piston rods wear thin, or the whole thing gets stuck mid-job. Shenzhen Yantian Port had this issue last year: a crane froze up for 4 hours because of a stuck cylinder, delaying 10 containers and making the cargo ship miss its departure window.
We use 800MPa high-strength alloy steel for every hydraulic cylinder– that’s the tough stuff that doesn’t bend under pressure. Then we add a double anti-corrosion layer: first a zinc-aluminum thermal spray, then a tight sealant coat. This setup passes a 48-hour neutral salt spray test with zero rust spots, so the cylinder lasts 2+ years in salty port air. The piston rod gets a thick chrome plate, hitting HRC60+ hardness – it’s 50% more wear-resistant than regular rods, so it doesn’t wear down even with non-stop stretching and shrinking. We use imported oil-resistant polyurethane seals, paired with our own double-lip design – they work fine from -20°C to 80°C, block out salt and dust, and keep oil leaks under 0.1%.
We’ve been building hydraulic cylinders for 25 years – we know every trick to make one fit your gear perfectly. For Qingdao Port’s container cranes, we made lifting cylinders with an 80mm piston rod diameter and 1200mm stroke, plus a built-in pressure sensor to prevent overloading. For Tianjin Port’s stacker-reclaimers, we added a hydraulic buffer to cut down on shock – those cylinders now last 3 years instead of 1. It doesn’t matter if your machine is ZPMC, Sany, Kalmar, or some rare model no one else has parts for – we’ll draw up a 3D model first, so you can see it’s a perfect fit before we even start building.
Every HCIC hydraulic cylinder gets three strict tests before it leaves our factory: 2x working pressure (20MPa, held for 30 minutes with zero leaks), 48-hour salt spray, and 1000 continuous stretch tests. We send you a full test report with every order, so you know it’s good to go. Guangzhou Port bought 20 cylinders last year-end – to this day, not one has leaked or gotten stuck. That saves them 2 repair jobs every month, and zero downtime means no missed cargo deadlines.
Our cylinders fit most port machines, whether they’re Chinese-made or imported. When you swap out old cylinders this year-end, just take the old one off and bolt ours on – no need to modify your machine at all. That means no extra downtime during the busy year-end rush, when every minute of operation counts.
Every port customer gets a dedicated after-sales rep – someone you can call or message anytime, day or night. Whether you’re trying to pick the right cylinder, have questions about the custom build process, or need help fixing something after installation, we’ll get back to you fast with clear, no-nonsense answers. No automated messages, no waiting on hold – just real help, when you need it most. For More details please email us "davidsong@mail.huachen.cc" or google search "HCIC hydraulic"
