| 1.Standard |
| ˇˇNowadays,China does not exist the formal nation PP-R pipe standard,the PP-R fittings our company produced regards as the National Standard ISO/DIS 15874-1999 "hot-cooling water plastic pipe system,polypropylene" and we also stipulated it into our enterprise standard,according to this standard to produce and detect. |
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| 2.Color |
| ˇˇPP-R hot-cooling pipe and fitting are same color,that is cooling water fitting is blue,hot fitting is cafe. |
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| 3.Pressure grade |
| ˇˇThe pressure of our pipe is PN2.0. |
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| 4.Performance require |
| ˇˇPP-R fitting physico-machanical performance |
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