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Premium Mineral Insulated Cables
Engineered for Precision

China's trusted manufacturer of high-purity MgO (≥99.6%) mineral insulated thermocouple, heating, and RTD sensor cables. ISO9001 certified with global delivery.

K Type Thermocouple Cable

K Type MI Cable

SS304, 0.5mm, 2 Core

Heating Cable

MI Heating Cable

SS304, 3.2mm, Nicrobell

Metal Sheathed Cable

MI Metal Sheathed

Al2O3, 6.4mm, SS304

RTD Sensor Cable

RTD Sensor Cable

4-Core, Steel Armored

Copper MI Cable

Mineral Insulated Copper

CuNi, 100M Reel

T Type Cable

T Type Thermocouple

SS316, 4mm, 2-Core

About Leadkin

Ningbo Leadkin Instrument Complete Sets of Equipment Co., Ltd. is a leading Chinese manufacturer specializing in high-performance mineral insulated cables for industrial temperature measurement and heating applications.

With strict quality control and ISO9001 certification, we deliver MI cables with MgO purity of ≥99.6%, ensuring superior electrical insulation, thermal stability, and mechanical durability in extreme environments.

≥99.6%
MgO Purity
1600°C
Max Temp
ISO9001
Certified
Global
Exports
Factory Equipment Cable Production Quality Testing Packaging

Our Product Range

Precision-engineered mineral insulated cables for thermocouples, heating, RTD sensors, and industrial instrumentation.

K Type MI Cable

K Type MI Thermocouple Cable

  • Sheath: SS304, SS316, Inconel600
  • Diameter: 0.5mm - 12.7mm
  • Core: 1 or 2 Core
  • MgO Purity: ≥99.6%
Get Best Price
MI Heating Cable

MI Heating Cable

  • Sheath: SS304, SS321, Nicrobell
  • Diameter: 1mm - 3.2mm
  • Insulation: MgO, Al2O3
  • Standard: ISO9001
Get Best Price
MI Metal Sheathed Cable

MI Metal Sheathed Cable

  • Sheath: SS304, SS310S, Inconel600
  • Insulation: Al2O3, MgO
  • Diameter: 3mm - 6.4mm
  • Type: Single or Double Core
Get Best Price
RTD Sensor Cable

RTD Sensor Cable

  • Sheath: SS316, SS321, CuNi
  • Core: 2, 4 Core Armored
  • Extension: Pt100, 0.48mm sheath
  • Application: Industrial Sensors
Get Best Price
Mineral Insulated Copper Cable

Mineral Insulated Copper Cable

  • Sheath: Copper, CuNi
  • Diameter: 0.6mm - 6.0mm
  • Length: 100M Reel
  • Purity: ≥99.6% MgO
Get Best Price
T Type Thermocouple Cable

T Type Thermocouple Cable

  • Sheath: SS310, SS316, SUS304
  • Diameter: 1.5mm - 4mm
  • Core: Single or 2-Core
  • Temp Rating: Up to 1600°C
Get Best Price
Type N Thermocouple Cable

Type N Thermocouple Cable

  • Sheath: AISI 316L, SS310
  • Diameter: 4mm, 6.4mm
  • Insulation: Al2O3, MgO
  • Standard: Class 1 Accuracy
Get Best Price
J Type Thermocouple Cable

J Type Thermocouple Cable

  • Sheath: SS310S, Inconel 600
  • Calibration: Type J, Class 1
  • Diameter: 3mm - 12.7mm
  • Extension: Shielded, JK Code
Get Best Price

Why Choose Leadkin?

Engineered for reliability, precision, and performance in extreme industrial environments.

ISO9001 Certified

Rigorous quality control ensures consistent performance and compliance with international standards.

High Temp Resistant

Withstands up to 1600°C, ideal for furnaces, kilns, and high-temperature industrial processes.

Superior Insulation

MgO purity ≥99.6% ensures excellent dielectric strength and thermal conductivity.

Global Supply

Trusted by clients worldwide with fast, reliable shipping and technical support.

≥99.6%
MgO Purity
1600°C
Max Temp
0.5-12.7mm
Diameter Range
ISO9001
Quality Certified

Frequently Asked Questions

What is mineral insulated cable?

Mineral Insulated (MI) cable consists of one or more conductors surrounded by highly compacted magnesium oxide (MgO) insulation and enclosed in a seamless metal sheath. It offers excellent thermal, electrical, and mechanical protection.

What sheath materials do you offer?

We provide cables with sheaths made from SS304, SS316, SS321, 310S, Inconel 600, and copper. Custom materials are available upon request.

What temperature ranges do your cables support?

Depending on sheath and thermocouple type, our cables operate from -200°C to 1600°C. K, N, E, J, T, R, B, and S types are available.

Are your products ISO certified?

Yes, Leadkin is ISO9001 certified, ensuring consistent quality, traceability, and process control across all manufacturing stages.

Can you customize cable length and packaging?

Absolutely. We offer custom lengths (e.g., 100M reels) and packaging options including wooden drums, plastic spools, and export-standard cartons.

Get in Touch

For quotes, technical support, or custom cable solutions, visit our official website to connect with our team.

Visit Official Website

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