About 2 Trademarks found that are owned by Mainchain International Inc.

"TUBE"

Junctions of metal for pipes; T-junctions of metal for pipes; Prompt pipe connectors of metal; Elbows of metal for pipes; Pipes of metal; Tubes of metal; Flanges of metal; Steel pipes; Steel tubes; Ducts of metal, for central heating installations; Pipes of metal, for central heating installations; Water-pipes of metal; Drain pipes of metal; Gutter pipes of metal; Ducts of metal for ventilating and air conditioning installations; Manifolds of metal for pipelines; Branching pipes of metal; Pipe muffs of metal; metal joinery fittings for compressed air ducts; metal pipe fittings for compressed air ducts; Casings of metal for oil wells; Penstock pipes of metal; Pipework of metal; Reinforcing materials of metal for pipes