Buried urban natural gas steel pipelines are surrounded by corrosive clay, underground water and microbial corrosion all year round. Ordinary thin epoxy lining is easily punctured by soil particles and lose anti-rust function. Epoxy coal tar pitch coating features excellent water & soil isolation performance, widely used in municipal gas network reconstruction in 2026.
FLDC two-component complete epoxy coal tar lining system for buried gas transmission steel tubes:

1. Epoxy zinc phosphate sealing primer
2. Thick-film epoxy coal tar pitch intermediate & top integrated coat
   Core Advantages:
   ✅ Ultra strong water barrier performance resist underground long-term soaking
   ✅ Resist microbial & corrosive soil medium erosion
   ✅ Good flexibility adapt slight ground settlement without cracking
   ✅ Low construction cost for long-distance gas pipeline engineering
   ✅ Meet national municipal gas pipeline anti-corrosion standards
   We supply pipeline lining coating for city gas companies worldwide. Get pipeline construction technical guide.