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| Item No | Describation of goods | Quan. | Unit | | 01 | 13 3/8''OD seamless steel,Grade L-80,68 IB/Ft,BTC Threaded and coupled. Length Range III | 48000 | meter | | 02 | 13 3/8''Casing Nipple,Grade L-80,68 IB/Ft,BTC pin X pin,3 M long | 28 | No | | 03 | 13 3/8''Casing Pup joint,Grade L-80,68 IB/Ft,BTC theaded and coupled, 6M long | 8 | No | | 04 | 13 3/8''Casing Pup joint,Grade L-80,68 IB/Ft,BTC theaded and coupled, 3M long | 8 | No | | 05 | Casing coupling for 13 3/8''Casing h# S' w! \7 A0 ^8 M
| 10 | No | | 06 | API casing drift for 13 3/8''Casing ,compelete with draw eyes at both ends | 4 | No | 0 y; L6 T5 d9 q8 ?" H
$ P6 V7 y8 x" i, A' J; c请问一般石油套管都是怎么理论计算重量? 还是采用 =(外径-壁厚)*壁厚*0.02466
$ q: ~9 \& I4 g7 ?$ C L8 E: x L另外我看到 L80钢级 有三种类型 1,9Cr,13Cr,
, O$ d1 W* V; I" n. f# l# u1 k一般什么情况下才采用9Cr,13Cr? |
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