GLASS LINED PIPE
Low-carbon steel tubes (e.g.,Q235B), internal sandblasted to Sa2.5 cleanliness.
Low-carbon steel tubes (e.g.,Q235B), internal sandblasted to Sa2.5 cleanliness.
Fabrication Standards for Glass-Lined Steel Tubes
1. Base Material
Low-carbon steel tubes (e.g.,Q235B), internal sandblasted to Sa2.5 cleanliness.
2. Glass Formulation
Industrial glass enamel (SiO₂≥65%), CTE ≈3.3×10⁻⁶/K matching steel substrate.
3. Firing Process
Multi-coating & firing (850~930°C), layer thickness 0.8~2.0mm, zero bubbles/pinholes.
4. Quality Control
Compliance with HG/T 2370-2017, 20kV spark testing, thermal shock resistance ≥200°C.
✅ Corrosion Resistance: Withstands all inorganic acids (except HF) and organic solvents (pH 1~14).
✅ Non-stick Surface: Ra≤0.5μm roughness, preventing material adhesion.
✅ Thermal Stability: Operating range -20°C~200°C, thermal conductivity 0.9~1.2W/(m·K).
✅ Mechanical Strength: Compressive strength ≥200MPa, enamel Mohs hardness 6~7.
Chemical Processing: Acid/alkali transfer lines, reactor/condenser/evaporator connections
Pharmaceuticals: High-purity fluid transfer, sterile production systems
Environmental Protection: Scrubber towers, wastewater neutralization
Food Industry: Sauce/fermentation liquid transportation
