| 1. | Drain piping may require to be protected against freezing .
泄水管要求有防冻保护措施。 |
| 2. | Urinal drain pipes in crew toilets to be renewed
船员厕所里小便池排水管需换新。 |
| 3. | Drain pipes and percolation pipes - general requirements
排水管道和渗滤管道.一般要求 |
| 4. | Standard specification for asbestos - cement storm drain pipe
石棉水泥排雨水管道标准规范 |
| 5. | Specification for clayware field drain pipes and junctions
田间排水用陶土管及连接管规范 |
| 6. | Drain pipes for air - conditioners in prh units
单位的冷气机去水管道 |
| 7. | Specification for styrene - rubber plastic drain pipe and fittings
苯乙烯塑料排水管材和配件规范 |
| 8. | Sandra ! ifanything happens to me , iook in the drain pipes
桑德拉！如果我出事了看看排水管里面 |
| 9. | Specification for cast iron spigot and socket drain pipes and fittings
铸铁套接式排水管及配件规范 |
| 10. | Sandra ! if anything happens to me , iook in the drain pipes
桑德拉！如果我出了什么事看排水管里面 |
