When ordering pipes per GOST 20295, the following must be specified:

• Pipe dimensions (outer diameter, wall thickness, length)
• Steel grade (e.g., K48, K52, K60, etc.)
• Manufacturing method (ERW or SAW)
• Delivery condition (normalized, thermally improved, etc.)
• Additional requirements (impact testing, HIC resistance, etc.)

• Limits for C, Mn, Si, S, P, Nb, V, Ti, and other microalloying elements.
• Carbon Equivalent (CE) is restricted for weldability.

• Non-destructive testing (NDT):
  - 100% ultrasonic testing (UT) for weld seams.
  - Eddy current or radiographic testing (if specified).
• Mechanical tests:
  - Tensile, impact (Charpy V-notch at –20°C or –40°C), hardness.
• Hydrostatic testing:
  - Mandatory for all pipes (test pressure calculated per standard).
• HIC/SSC testing (for sour service applications).

• Pipes must be marked with: Manufacturer’s name, steel grade, size, heat number, and GOST 20295 compliance.
• Certification: Mill Test Certificate (MTC) with chemical/mechanical test results.

• Dimensional tolerances (OD, wall thickness, straightness).
• Surface quality (no cracks, laps, or unacceptable defects).
• End preparation (beveled ends if required for welding).