granddts

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Пол:
Мужчина 
Имя:
Mr.Yanfeng Zhang
Расположение:
Tianjin, Tianjin, China
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granddts опубликовал(а) новый Статьи:

PDC Bit is more and more popular in these days. When consider all the drilling footage in all industry ( Oil & Gas, Water well, Geothermal, HDD etc), it takes more than 60%. PDC Bit cost is becoming less & less, while quality is going up a lots with this relative new technology mature. In right form…

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granddts опубликовал(а) новый Статьи:

Tri-cone drill bits are one of the most interesting scrap metals on the market today. Not only do these tri-cone bits consist of durable tungsten metal, which consists of cobalt and nickel binders that are used to add anywhere from 3% to 30% weight, they can still be reused for drilling purposes pro…

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granddts опубликовал(а) новый Статьи:

A critical decision in the environmental drilling process is choosing the right rotary bits. Since drilling took off in the early part of the last century, a number of innovations have widened your bit choice options. Let's look at some of the more common options available. What is a tri c…

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