Hot Runner Valve Pin:

1. Materials: SKH51, SKD61, and others (custom-made available upon customer request).

2. Hardness: HRC59-61 (SKH51), HRC50-55 (SKD61).

3. Tolerance: ±0.001 mm

4. Surface treatments: Titanium nitride (TiCN) coating, chromium nitride coating, hard chrome plating, aluminum titanium nitride coating, nitriding, and nanoscale coatings (nARo2), among others—each achieving a surface hardness of HV2400 or higher (coatings available upon customer request).

5. Concentricity: 0.002mm

6. Precision: The precision of the effective mating area for the valve needle is within 0.002 mm, and valve needles of the same specification can be interchangeably matched with their corresponding valve sleeves.

7. Common valve needle size machining range: Diameter 2–13.5 mm; length 100–1500 mm.
Customized Processing
Is
Item Number
RY010
Type
Mold Hot Runner System
Brand
Ruiying
Model
4-250
Applicable Mold Type
Plastic mold
Product Alias
Needle valve needle, needle valve guide sleeve, needle valve positioning sleeve, valve seat, valve core
Surface Treatment
Aluminum Titanium Nitride / Titanium Nitride / Chromium Nitride / Titanium Carbonitride
Material/Ingredients
High-speed steel/SKH51/SKH-9/SKD61
Entity Processing
High-temperature heat treatment + cryogenic treatment

Directly sourced from the manufacturer, fully processed—high-precision, high-speed steel material for hot runner systems, including titanium-plated valve pins, valve bushings, and guide bushings.

[Titanium-Coated Wear-Resistant Sliding Fit] Plastic PET Mold Hot Runner Valve Pin & Valve Sleeve [One Lasts as Long as Ten—Ultra-Durable]

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