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- W2383521607 abstract "Based on the main characteristics and the requirement for utilization of the materials form the basis of the coiled tubing product development,the low carbon micro alloy steel of high strength in C-Si-Mn-Cr-Mo-Nb alloy series was adopted.And then the CT80 31.75mm×3.175mm coiled tubing was developed,which met the requirements of API 5C7,by utilizing ERW manufacturing process and the heat treatment technology.The Physical and chemical properties test results show that the average yield strength was 583MPa,tensile strength of 703MPa,elongation of about 29.5% on the longitudinal pipe body.The fatigue cycles of the coiled tubing product could be up to 615 times,which was superior to foreign like products,when the internal pressure is 34.47MPa.Both the pipe body and the weld have good properties of HIC resistance:the crack length ratio(CLR),the crack thickness ratio(CTR) and the crack sensitivity ratio(CSR) are zero." @default.
- W2383521607 created "2016-06-24" @default.
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- W2383521607 date "2010-01-01" @default.
- W2383521607 modified "2023-09-25" @default.
- W2383521607 title "Study on Coiled Tubing Performance and Its Development" @default.
- W2383521607 hasPublicationYear "2010" @default.
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