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Magnesial-quarts proppants. Specifications
Document status: Replaced by GOST R 54571-2023
Tube connections. Reduce unions for Pn 16 MPa (160 kgf/cm2). Construction and dimensions
Document status: Active
Broaches with diameter from 15 to 90 mm for slitting holes with involute profile and centering at outside diameter with module from 1 to 2,5 mm, double driven. Construction and dimensions
Document status: Active
Welding production qualification system. Part 5. Welding equipment qualification. Rules
Document status: Active
