| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| SY/T 6423.3-1999 | English | 359 |
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Petroleum and natural gas industries. Non-destructive testing (NDT)methods of steel tubers for pressure purposes. Ultrasonic testing of the weld seam submerged arc-welded steel tubes for the detection of longitudinal and/or transverse imperfec
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SY/T 6423.3-1999
| Obsolete |
SY/T 6423.3-1999
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