STO
Rolled steel sections. I-beers with parallel adgus of flanges. Specifications
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Instruction for non-destructive methods of quality control of welded joints in construction and repair of commercial and gas pipelines
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General technical requirements for valves supplied to JSC Gazprom
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Company standard. Bridges steel structures. Field welding procedure
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Company standard. Steel structures of bridges. Prefabrication
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Company standard. Corrosion protection of bridge metal structures by staining method
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