Medical Grade Straw Tip Mold Parts | S136 & SKD61 Precision Core Pins

Product Overview

Senlan Precision manufactures medical plastic straw tip mold parts using S136, SKD61, and SKH51 tool steels, produced strictly to customer drawings (Built-to-Print). These precision mould components are designed for medical-grade injection moulds where dimensional stability, surface quality, and long-term process consistency are critical for reliable mass production.

Key Features & Advantages

• Material options: S136 stainless steel, SKD61 hot-work tool steel, SKH51 high-speed steel

• Medical mould focus: Suitable for high-precision straw tip and small tubular plastic components

• High dimensional accuracy: Tight control of concentricity, straightness, and critical interfaces

• Surface quality: Ground or polished finishes available based on mould design requirements

• Durability: Stable performance under continuous injection moulding cycles

• Built-to-Print OEM: Manufactured strictly according to customer drawings and specifications

Applications / Industry Use

• Medical plastic straw tip moulds

• Medical consumable mould tooling

• Precision packaging components with small inner diameters

• High-cavity injection moulds requiring repeatable accuracy

Mold Structure & Design Description

Medical straw tip mold parts typically function as core pins, cavity inserts, or internal forming components within the injection mould. Depending on the design, these parts may include long, slender geometries and small inner diameters, requiring strict control of straightness and concentricity. Material selection (S136, SKD61, or SKH51) is matched to corrosion resistance, wear requirements, and expected production volume.

Manufacturing Capability & CNC Machining

• Equipment: High-precision CNC machining centers from MAKINO (Japan) and HARDINGE (USA)

• Processes: CNC turning, CNC milling, precision grinding, EDM, and polishing

• Machining accuracy: Up to ±0.002 mm depending on geometry

• Surface treatment: Optional polishing, nitriding, or coating based on application

• Inspection: Dimensional checks for concentricity, straightness, and critical diameters

Custom Development / OEM Workflow

1. Drawing review – Evaluation of tolerances, material, and functional requirements

2. Material selection – S136 / SKD61 / SKH51 according to mould application

3. Process planning – CNC and finishing strategy definition

4. Precision manufacturing – Controlled machining and in-process inspection

5. Final verification & delivery – Dimensional inspection and export-ready packaging

Quality Control & Export Experience

• Raw material verification and traceability

• In-process inspection at critical machining stages

• Final dimensional inspection reports available upon request

• Experience supplying precision mould parts to overseas medical and packaging mould manufacturers

Related Products

• Medical injection mold core pins and cavity inserts

• Precision mould components for thin-wall parts

• High-cavity injection mould spare parts

• Built-to-print mould tooling components

FAQ (Technical & Purchasing)

Q1: Which material is recommended for medical straw tip moulds?
Material selection depends on corrosion resistance, wear life, and production volume. S136 is commonly used for medical applications, while SKD61 and SKH51 are selected for higher wear resistance.

Q2: Can you produce very small inner diameters?
Yes. Precision grinding and EDM processes are applied for small-diameter and high-aspect-ratio designs.

Q3: Do you support prototype and low-volume production?
Yes. Single pieces, prototypes, and serial production are all supported.

Q4: Are surface finishes customizable?
Yes. Surface condition is produced strictly according to drawing requirements.

Get a Quote

Send your drawings, material specifications, and tolerance requirements to Senlan Precision. Our engineering team will review your project and provide a technical quotation for OEM, built-to-print medical plastic straw tip mold parts.