How to connect the old translucent pipe of Tianjin hose with the current tap water pipe? How to use

After asking about the water supply, we just received the underground pipe of tap water. Our old pipe is buried underground. When the tap water comes in, we should follow our old pipe! Butt joint Tianjin stainless steel clamp, but the two materials are different, how can not be firm, Tianjin throat hoop manufacturers open the valve, the interface because? For pressure! The old tube is translucent, it is said to be poly ethylene. This answer is recommended by netizens. I've already praised it. I've stepped on it. What's the name? 2011-12-05!

Expand the whole? I'd like to know first that the "old" is transparent and plastic, isn't it? And is the transparent pipe the water supply end or the iron pipe the water supply end? A: I can tell you that if the diameter of the plastic pipe is 20 mm (i.e., the internal diameter), it can be connected with the iron pipe which is often said to be "6 points". If your family is Japanese, Fengguan should be a little smaller, that is, the "4 points" should be corresponding to the plastic pipe with the inner diameter of 15 mm, so it is only the premise that you can make it. Find out. Then the market has sold barbed plastic pipe joints, which can be fixed and sealed, but when inserting, a corresponding hose hoop (hose Hoop: tightening effect) should be installed on the plastic pipe, so that the plastic pipe and iron pipe can be connected. When connecting in this way, pay attention that the pipe joint can bear 0. 4MPa of water pressure, that is often: 4 kg pressure. Don't use this method at any age.

It is said that the underground pipes at home are made of polyethylene. Now the pipes of tap water can't connect with the old ones. The pressure is too high, and the water will burst out as soon as it is boiled. If Tianjin hose hoops are completely replaced, the project will be too big. It's said that iron pipe can be used for ironing? Now, the pipes of the tap water can't connect with the old pipes. The pressure is too high. The water will burst as soon as it is boiled. If all the pipes are replaced, the project will be too big. It's said that iron pipe can be used for hot joint. How to make it? Is there any other way?

A unfold all methods 1: pipe thread, hand; moving hinge plate sleeve, Tianjin throat! Hoop reuse; pipe connection. Method 2: use the same pipe diameter fast? Connector?