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GB/T 34204 Coiled Tubing |
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Standard: GB/T 34204
Equivalent Standards: API RP5C7, API 5ST |
Material: CT55
Equivalent Materials: CEW 2, RSt34-2, TS-30a |
Chemistry Composition |
C, % |
Si, % |
Mn, % |
P, % |
S, % |
0.15 max |
0.35 max |
0.70 max |
0.025 max |
0.025 max |
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Mechanical Properties |
Tensile Strength , MPa |
Yield Strength, MPa |
Elongation, % |
Delivery Condition |
420 min |
- |
6 min |
+C |
370 min |
- |
10 min |
+LC |
370 min |
260 min |
18 min |
+SR |
290 min |
- |
28 min |
+A |
300-440 |
195 min |
28 min |
+N |
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GB/T 34204 specifies the terms and definitions, symbols and abbreviations, order content, raw materials and manufacturing processes, material requirements, dimensions, mass per unit length, defects and tube end processing, inspection and test, test methods, non-destructive testing , invalid test, re-inspection, marking, packaging and protection, documents of coiled tubing. GB/T 34204 is suitable for coiled tubing ranging from 19.1mm to 88.9mm, steel grade CT55~CT110 used in the workover, logging, drilling and completion operations of oil and gas wells. GB/T 34204 does not include the content of the suitability of coiled tubing for using in corrosive environments.
GB/T 34204规定了连续油管的术语和定义、符号和缩略语、订货内容、原料和制造工艺、材料要求、尺寸、单位长度质量、缺陷及管端加工、检验与试验、试验方法、无损检测、无效试验、复验、标志、包装与防护、文件。GB/T 34204适用于油气井钻采过程中修井、测井、钻井和完井等作业用19.1mm~88.9mm、钢级CT55~CT110的连续油管。GB/T 34204不包含连续油管在腐蚀环境使用适宜性的内容。 |
Manufacture: the tubes shall be manufactured from electric welded pre-tubes by cold drawing or other suitable processes. The tubes shall not include welds used for joining lengths of flat rolled strip prior to forming the pre-tube.
Delivery Condition: cold drawn (hard) as +C, cold drawn (soft) as +LC, cold drawn and stress relieved as +SR, annealed as +A, normalized as +N.
Inspection & Test: chemistry composition analysis, tensile test, flattening test, flaring test, NDT, surface inspection and dimension check. |
Length: 5800mm; 6000mm; 10000mm; 11800mm; and so on.
Further process: cutting, deformation. |
Keyword: precision steel tube, GB/T 34204, precision steel tube, high precision, cng tube, HPL Tube |
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