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Iron pipes are actually not good, long-term sewage corrosion, will accelerate the aging of iron, most of them are PVC
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No, the iron ones are not good, they are all made of stainless steel.
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The toilet sewage riser of the 5-story building, and the horizontal pipe at the bottom, should be made of iron.
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The bottom came late and Pippi slept very well.
It is best to take the spacing in the pipe of the H-through pipe fittings as the standard.
If your house is on the top floor, it's fine, if it's not, no.
The exhaust pipe is gone, directly on the sixth floor.
It should be coated with a waterproof layer first, and then the riser should be wrapped, and then the closed water test. >>>More
According to the atlas standards, but the actual on-site supervision is not strict, Hongsheng waterproof casing is not used, and a simple steel pipe is used instead of casing.