| 摘要 |
A method of attaching a branch outlet fitting to a metal pipe buried beneath the earth's surface while causing reduced disturbance to the earth above the pipe, comprising digging a vertical excavation from the earth's surface to expose a short length of the pipe; positioning a first fitting portion on a lower surface of the pipe; positioning a second fitting portion on an upper surface of the pipe in alignment with the first fitting portion, the first and second fitting portions having welding material thereon adjacent the pipe surfaces and each other; and from the earth's surface, activating the welding material to physically and sealably secure the fitting portions to the pipe and to each other.
|
