Deeper bury is available by special order from the distributor or by customer providing longer ductile pipe and longer stem rod.
通过向经销商特别定制或由用户自行提供更长的球墨铸铁 管和更长的阀杆，可以实现更深的掩埋。
The utility model relates to an auxiliary accessory used for production of a ductile pipe casing enterprise, in particular to a novel supporting wheel for supporting a cast pipe to rotate.
本实用新型涉及球墨铸管企业生产用的辅助配件，特别指一种支承铸管转动的新型托轮。
As a result, it is feasible that making of ductile iron pipe use of semi-steel.
结果表明：用冶炼高钛渣的副产半钢生产球墨铸管在工艺上是可行的。
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