钻杆常用尺寸规格外径磅级壁厚钢级扣型?2-3/8"6.657.11GNC26?2-7/8"10.409.19G/SNC31?3-1/2"13.309.35G/SNC3815.5011.40G/SNC38?4-1/2"16.608.56G/SNC46 (IEU)16.608.56G/SNC50 (EU)?5"19.509.19G/SNC50'.内涂层和耐磨带的介绍常用内涂层的类型：TC-2000 (国产)TK-34 TK-34P TK-34XTDPC常用耐磨带的类型：BOTN-1000 BOTN-3000 (国产)ARNCO-100 ARNCO-200 ARNCO-300。