As an important part of drill string, drill collar can supply the drill bit and increase the rigidity of drill string.Stand size and thread connectionCylindrical type drill collar : Be made of alloy s
加重钻杆
产品包装 : 钢架打包
执行标准 : API-7-1
商品编码 : 8431.43.10
Made of AISI 4154H alloy steel; micro element is effectively controlled and heat treated along the whole length. To protect the pipe and joint from galling, the HWDP has center wear pad completes with
石油钻杆
产品包装 : 钢架打包
产品用途 : 用于石油钻井
执行标准 : API-5DP
商品编码 : 8431.43.10
The advanced oil drill pipe friction butt welding production line can adjust the welding parameters to the precise position, to ensure the quality of welding belt; The heat treatment process with inte
