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发表于 2021-3-20 22:30:38
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Part 1: Non-alloy steel tubes with specified room temperature properties
Part 2: Electric welded non-alloy and alloy steel tubes with specified elevated temperature properties.
Part 3: Alloy fine grain steel tubes.
Part 4 : Electric welded non-alloy and alloy steel tubes with specified low temperature properties
Part 5: Submerged arc welded non-alloy and alloy steel tubes with specified elevated temperature properties.
Part 6: Submerged arc welded non-alloy steel tubes with specified low temperature properties.
Part 7: Stainless steel tubes
新版2019的 |
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