Honed tube& hard chrome plated rod-Jianning Metals-Luna

Name: Honed tube& hard chrome plated rod-Jianning Metals-Luna
Address: ADD : BUILDING 5, INTERNATIONAL FINANCIAL CENTER, DONGCHANG EAST Road, LIAOCHENG CITY, Liaocheng, 252000, CN
Telephone: +8615106857106

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Honed tube& hard chrome plated rod-Jianning Metals-Luna

Shandong JNM Metals Group established in 2011 is a manufacturer and exporter of steel pipes, focus on hydraulic transmission field.

We main provide honed tube/SRB tube and chrome rod of hydraulic cylinders in hydraulic systems.

10/06/2026

🚛 Chrome plated bars – ready to ship.

Watch as our team carefully loads each bar for delivery. No rushing. No rough handling. Every bar is treated with the same care from production all the way to the truck.

Because good packaging and gentle loading are just as important as precision grinding. Our customers expect quality — and that includes how we ship. ✅

Material CK45 / C45E / S45C, 4140 / 42CrMo4, 40Cr, 20MnV6, SAE10V45, ST52
Dimensions size Φ 6mm ~ Φ 360mm
Diameter tolerance ISO f7 ~ f8
Chrome layer thickness 20μm (min)
Surface Roughness Ra 0.2μm (Max)
Surface Hardness 800HV (Min)
Straightness 0.2 / 1000mm
Standard Length 3m - 9m (or customized by client's requests)
Whatsapp: 008615106857106
Email: [email protected]

09/06/2026

📦 Chrome plated bar packaging – done by hand, with care.

Watch our dedicated workers as they carefully prepare each bar for shipment. First, every bar slides into a sturdy paper tube for basic surface protection. Then, they wrap it tightly with cloth strips to prevent any movement or scratching during transit.

No machines. No shortcuts. Just experienced hands making sure each bar arrives in the same condition it left us. ✅

Material CK45 / C45E / S45C, 4140 / 42CrMo4, 40Cr, 20MnV6, SAE10V45, ST52
Dimensions size Φ 6mm ~ Φ 360mm
Diameter tolerance ISO f7 ~ f8
Chrome layer thickness 20μm (min)
Surface Roughness Ra 0.2μm (Max)
Surface Hardness 800HV (Min)
Straightness 0.2 / 1000mm
Standard Length 3m - 9m (or customized by client's requests)

Whatsapp: 008615106857106
Email: [email protected]

08/06/2026

🎥 Grinding process for chrome plated bars – precision in motion.

After chrome plating, grinding is the step that brings the surface to its final accuracy. Watch as our equipment removes minimal material to achieve tight tolerances and a smooth, uniform finish.

No bumps. No chatter marks. Just a straight, consistent surface ready for real-world performance.

See the difference precision makes. ✅
Whatsapp: 008615106857106
Email: [email protected]

05/06/2026

📦 Inside our honing tube packaging – three steps, full protection.

First, each tube gets a thorough coating of anti-rust oil to prevent corrosion from the inside out.
Then, we seal both ends with snug plastic caps to keep out dust and moisture.
Finally, zip ties secure everything in place – no shifting, no loose parts during transit.

Simple steps. Big difference. Every tube packed with care. ✅

Whatsapp: 008615106857106
Email: [email protected]

03/06/2026

🛢️ Every honing tube gets anti-rust oil – one by one.

We don’t cut corners when it comes to protection. After honing and inspection, each tube receives a careful, even coat of anti-rust oil. Not a quick spray — a deliberate application to ensure full coverage inside and out.

Because rust protection starts with consistency. And we treat every tube like it matters. ✅
Whatsapp: 008615106857106
Email: [email protected]

01/06/2026

🚛 Piston rod shipping – handled gently, loaded with care.

Watch our team carefully prepare and load each rod for shipment. No throwing. No rushing. Every rod is handled gently by experienced workers who know that quality doesn't end at production — it extends all the way to delivery.

Because rough handling can undo good work. And we take pride in every step. ✅

WhatsApp: +86 15106857106 Email: [email protected]

29/05/2026

📦 Chrome Rod Packaging – Carefully Packed, Layers of Protection.

We don't simply throw piston rods into a box. Here's how we protect them:

First, each piston rod is placed in a sturdy cardboard tube for basic surface protection. Then, we tightly wrap it with cloth strips to prevent movement and scratches. Finally, we give the top extra special packaging.

Layer upon layer of packaging, each one carefully protected, ready to ship. ✅

WhatsApp: +86 15106857106 Email: [email protected]

28/05/2026

⚙️ Hardness testing – a critical check for every piston rod.

A piston rod must withstand repeated friction, heavy loads, and continuous movement. That's why we perform hardness testing on every batch.

Using precise testing equipment, we verify that the rod surface meets the required hardness range. Too soft leads to premature wear. Too hard risks brittleness. We aim for the right balance — for durability and reliability in real-world use. ✅

WhatsApp: +86 15106857106 Email: [email protected]

26/05/2026

📦 Inside our honing tube packaging – protection starts from within.

Before outer wrapping, each tube receives careful internal protection. We apply anti-rust coating on the bore, then seal both ends with protective caps. This keeps the precision-honed surface clean, dry, and damage-free during storage and transit.

No dust. No rust. No surprises upon arrival.

Because how we pack reflects how we care. ✅

WhatsApp: +86 15106857106 Email: [email protected]

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23/05/2026

🖍️ Marking on honing tubes – as specified by the customer.

Once the tube passes final inspection, we move to marking. This isn't just about labels — it's about traceability and meeting your exact specs.

Need batch numbers, sizes, material grades, or your own logo? We apply clear, durable markings exactly as you request. No guesswork. No confusion on site. ✅

Clear tube. Clear mark. Clear communication.

WhatsApp: +86 15106857106 Email: [email protected]

Address

ADD : BUILDING 5, INTERNATIONAL FINANCIAL CENTER, DONGCHANG EAST Road, LIAOCHENG CITY
Liaocheng
252000

Telephone

+8615106857106

Website

http://www.jnmmetals.com/, http://jianning-metals.en.alibaba.com/

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