Pneumatic Cylinder Hard Chrome Plated Bars with Internal Thread

Here is a rewritten and improved version of your content in English, with more than 500 characters and presented in a natural, human-like tone: --- **Chrome Layer Hardness:** Hv800-1000 **Chrome Layer Thickness:** 15 ~ 25 micron **Surface Hardening Depth:** 0.8-3 mm **Roughness:** Ra 0.2~0.4 micron **Transport Package:** Paper Sleeve and Wooden Box **Specification:** Dia 3-120 mm **Origin:** China **HS Code:** 8483109000 **Main Products:** Hard Chrome Plated Rod, Hydraulic Piston Rod, Cylinder Piston Rod, Chromium Rods, Linear Shafts, SBR Shafts, Hard Chrome Shaft, Induction Rod, Induction Shaft, etc. Diameters range from 3 mm to 120 mm. | Item | OD (mm) | Description | |--------------------|---------|-------------| | Hard Chrome Rod | 3 | | | | 4 | | | | 5 | | | | 6 | | | | 8 | | | | 10 | | | | 12 | | | | 13 | | | | 14 | | | | 15 | | | | 16 | | | | 17 | | | | 18 | | | | 20 | | | | 22 | | | | 25 | | | | 28 | | | | 30 | | | | 32 | | | | 35 | | | | 40 | | | | 45 | | | | 50 | | | | 55 | | | | 60 | | | | 65 | | | | 70 | | | | 75 | | | | 80 | | | | 85 | | | | 90 | | | | 100 | | | | 110 | | | | 120 | | | Induction Hard Chrome Rod | OD (mm) | Description | |---------------------------|---------|-------------| | | 3 | | | | 4 | | | | 5 | | | | 6 | | | | 8 | | | | 10 | | | | 12 | | | | 13 | | | | 14 | | | | 15 | | | | 16 | | | | / | | | | 18 | | | | 20 | | | | 22 | | | | 25 | | | | 28 | | | | 30 | | | | 32 | | | | 35 | | | | 40 | | | | 45 | | | | 50 | | | | 55 | | | | 60 | | | | 65 | | | | 70 | | | | 75 | | | | 80 | | | | 85 | | | | 90 | | | | 100 | | | | 110 | | | | 120 | | Our hard chrome piston rods are manufactured using high-quality JIS S45C material. The process includes precision machining, followed by surface chromium treatment, achieving a surface precision level of **f7** and a hardness of **HV800 minimum and above**. This ensures excellent wear resistance and significantly extends the service life of the rod, helping our customers reduce long-term costs. The corrosion resistance is tested in our internal salt spray laboratory. The surface undergoes heat treatment, reaching a hardness of **HRC55°±2°**, with a hardened depth ranging from **0.5mm to 3mm**. After that, the rods go through precision machining and hard chrome plating, with a coating thickness of **20 microns ±10%**, further enhancing their durability and performance. **1. Chrome Plated Steel Bars:** We produce these bars from medium carbon cold-finished or hot-rolled steel, typically grades like 1045. They are centerless ground, polished, and chrome-plated with a minimum thickness of **0.0005" per side**. These bars are ideal for most piston rod applications in hydraulic and pneumatic cylinders. **2. Induction Hardened Chrome Plated Bars:** These bars are made using advanced techniques on materials such as JIS S45C, SAE1045, or DIN CK45. They go through surface removal, polishing, induction hardening, and then hard chrome plating. The result is a highly impact-resistant bar suitable for demanding environments. **Applications:** Linear motion guides, hydraulic cylinder rods, plastic injection molding machines, construction equipment, rubber molding machines, papermaking machines, printing machines, refrigeration equipment, food and chemical machinery, loading equipment, fiber spinning equipment, textile machinery, agricultural equipment, automotive parts, and shipbuilding. **3. Cold Drawn Seamless Mechanical Tubing (CDS):** This is a cold-drawn 1020 steel tube. It is produced from hot-rolled bar stock and undergoes cold drawing to improve its physical properties, reduce machining time, and provide better dimensional accuracy, enhanced machinability, and tighter tolerances compared to hot-finished products. **Applications:** Hydraulic cylinders, truck and automotive parts, heavy equipment, agricultural components, car and truck axles, suspension parts, shock absorbers, high-speed shafts and rollers, bearings, spacers, roll cages, and other machined tubular parts. If you're interested in our products or services, feel free to contact us: **SUZHOU WEIPENG PRECISION MACHINERY CO., LTD** Address: No.217 Ruiqi Building, No.668 Fengting Street, Suzhou Industrial Park, P.R.C Tel: 0086-512-68387269 Fax: 0086-512-68387269 Website: [www.wepauto.com](http://www.wepauto.com) | [www.chromedbar.com](http://www.chromedbar.com) --- Let me know if you need this tailored for a specific audience or platform.

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