Graphite Pipe

BZNCarbon manufactures high-performance graphite pipes and tubes specifically for heat exchanger systems. With advanced processing lines, we produce a wide range of graphite pipes, blocks, and plates that deliver superior thermal conductivity, corrosion resistance, and dimensional accuracy.

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Types of Graphite Pipes

1. Machined Graphite Pipes
Produced by machining solid graphite blocks (e.g., isostatic, molded, extruded, vibration, or mechanical graphite). These pipes inherit the high-temperature resistance and chemical stability of the base graphite material.

Size Range:
- Outer Diameter: 2–280 mm
- Length: 30–2000 mm
Applications:
- Metallurgy, chemicals, power plants, machinery, aerospace

2. Resin Extruded Graphite Pipes
These are produced by mixing graphite powder with phenolic resin, extruding the mixture, and then graphitizing at high temperature. This type enables longer pipe lengths (up to 7500 mm) and is ideal for use in graphite tube heat exchangers.

Features:
- Excellent thermal conductivity: 30–40 W/m·K
- High corrosion resistance (acid-resistant)
- Light weight and low thermal expansion
- Stronger than many non-metallic materials and even stainless steel in corrosive environments
Main Application Fields:
- Chemical processing, chlor-alkali industry, metallurgy, pharmaceuticals, environmental protection, etc.

Graphite Pipe Specifications (As per Data Sheet)

Property	Unit	Value / Range
Bulk Density	g/cm³	1.80–1.93
Water Absorption	%	≤ 0.07
Thermal Conductivity	W/m·K	30.4–40.7
Compressive Strength	MPa	86.2–120
Tensile Strength	MPa	24.5–28.2
Flexural Strength	MPa	60–65
Impact Strength	N·cm²/g	29–34
Penetrability @ 0.8 MPa	–	No leakage (10 mins)
Max Application Temperature	°C	200
Aging Decomposition Temp.	°C	250–260
Linear Expansion Coefficient	1/°C	(1.48–1.94) × 10⁻⁶
Resin Type	–	Phenolic Resin
Production Method	–	Screw Extrusion
Outer Diameter / Inner Diameter	mm	32/22, 37/25, 51/38 etc.
Length	mm	Up to 7500
Bursting Pressure	MPa	≥ 6.8