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GB/T 23802-2009 Petroleum and natural gas industries―Corrosion-resistant alloy seamless tubes for use as casing,tubing and coupling stock―Technical delivery conditions
Issued on: 2009-05-18 Price(USD): 490.0 |
GB/T 24767-2009 The gravity heat pipe for solar application
Issued on: 2009-12-15 Price(USD): 210.0 |
SY/T 5561-2008 Friction welding drill pipe
Issued on: 2008-6-16 Price(USD): 690.0 |
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