to butt

• Company products is it according to butt welding aluminium plastic pipe , astmf1335 - 98 of u . s . a . , , is it unite according to germany din16892 - 97 polyethylene in charge of to pay to rigorously enforce , organize and produce according to iso dis15874 international ppr pipe , pipe fittings standard and gb t18724 p - pr pipe , pipe fittings national standard , the product specification is from 20 - 160mm , great variety of goods
  公司产品严格按照美国astmf1335 - 98对接焊铝塑管，按照德国din16892 - 97交联聚乙烯管，按iso dis15874国际ppr管材管件标准和gb t18724 p - pr管材管件国家标准组织生产，产品规格从20 - 160mm ，品种全。
• The technology of directional butted & connected well means to butt & connect two or more wells directionally at the underground target extraction layer which is hundreds of meters away from the ground but hundreds of meters away from each other on the ground to fulfill mining with two or more wells connected
  摘要定向对接连通井技术是采用定向钻探技术和水平井技术，使地面相距数百米的两井或多井，在地下数百米甚至数千米的目的开采层定向对接连通，实现两井或多井连通采矿。