large caliber pipe 大口径管材
large-caliber pipe piles 大口径钢管桩
large-caliber pipe fittings 大口径管件
Large Caliber Winding Pipe 大口径管材
The text introduces the welding leak phenomena of large caliber pipe across river, and wet or dry welding repair technology below water.
介绍了大口径过河钢管接口焊缝爆漏现象，以及湿法和干法水下焊接修复技术。
This large caliber pipe has well airproof and mechanical capability so that it can be used in gas transmission.
针对这种管道直径大、密封可靠、力学性能良好等特点，可以用于煤矿通风管道。
In the light of technology, the writer analyses the economic benefits and accounting of large caliber and long distance water delivery pipe.
针对确定的工艺进行了大口径长距离输水管道经济效益分析与核算。
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