API 5L 2004

Specification for Line Pipe provide standards for pipe suitable for use in conveying gas, water, and oil in both the oil and natural gas industries. This specification covers seamless and welded...
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Gost 12815-80

FLANGES FOR VALVES, FITTINGS AND PIPELINES FOR Pnom from 0.1 to 20.0 MPa (from 1 to 200 kgf/sq.cm) Types. Connecting dimensions and dimensions of sealing surfaces
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