plug-connected

Homework / test English to Polish Tech/Engineering Energy / Power Generation

"Rectangular ducts will be made from galvanized steel plate with thickness consistent with the BN-88/8865-04 standard. Its flanges will be made from sections hooped onto, and riveted or welded, to the duct. We will seal joints with soft or porous rubber.
Circular Spiro-type ducts will be made from galvanized steel plate. The ducts will be plug-connected, riveted and sealed with sealing compound and aluminum bands."

Szczerze powiem, że nie wiem jak to ładnie stylistycznie ująć.