circumfrencial weld is sometimes referred to as Girth weld. its just another term.
Flush Joint Wash Pipe - used in the oilfield on thin-wall 'Wash Pipe' used in 'fishing' operations - retrieval of broken tools from an well.
The same that is used above ground. Sweat fitting coupler. I would not use copper underground in an area that has winter.
A wrapped tap joint is a method of connecting a smaller branch pipe to a larger main pipe by wrapping the smaller pipe onto the larger one using welding techniques. This joint is often used in pipeline construction to create a secure and leak-proof connection between pipes of different sizes.
It was Mr Dunlop who used a hose pipe joint at the end for his sons cycle.
Use only black pipe
This is a good indication that you have a hole in your sewer line. It could be from root intrusion via a bad joint. It could be a bad joint. Perhaps a collapsed line due to the pipe material itself. Some older homes used a sewer material called orangeberg which was discontinued because it was structural unstable and prone to all sorts of problems.
A mechanical joint fitting, often used for connecting plain end ductile iron pipe to HDPE.
Coated Copper Pipe that is approved for underground only.
Teflon tape can be used on any type of liquid joint. However, it is strictly speaking a lubricant, NOT a sealant, and is a cheap and nasty way of sealing joints. - The proper sealant for any liquid pipe joint is a pipe joint compound such as Whitlam's or Oatey's Blue Joint Compound.
A pipe joint is a key component to any successful plumbing system. Pipe joints means the connection at the ends of pipes that ensures tight sealing and strength. In some cases, pipe joints must also provide for rapid assembly and dis-assembly or a change in the direction of the line of pipe. The most common types used for general-purpose metal pipes are welded, flanged, threaded, and bell-and-spigot joints. alliedallcityinc.com
a pipe line dumby