Dimensional and Surface Verification: Technicians verify the Outer Diameter (OD), Wall Thickness (WT), and Length against the project's technical specifications (such as ASTM A312, EN 10216-5, etc.). Pipes are inspected under specialized lighting to guarantee freedom from scratches, overlapping, pitting, or mechanical damage.

Positive Material Identification (PMI): Handheld X-ray Fluorescence (XRF) spectrometers are used for random spot-checks. By instantaneously verifying the exact content of core alloying elements like Chromium (Cr), Nickel (Ni), and Molybdenum (Mo), manufacturers eliminate any risk of material mix-ups.

Marking and Heat Number Traceability: Every qualified pipe must bear a clear, permanent stencil or stamp. This marking includes the material grade (e.g., 304/304L, 316/316L), Heat Number, dimensions, and manufacturing standards to ensure 100% end-to-end traceability.

Hexagonal Bundling: Small-diameter pipes (typically DN≤50) are tightly bound into hexagonal bundles using high-strength nylon or galvanized steel strapping.

Soft Isolation Barriers: To prevent metal-on-metal friction—which causes difficult-to-repair scratches during transit vibrations—woven belts, rubber strips, or corrugated cardboard are inserted between the pipes and under the strapping bands.

Single-Piece Stowing for Large Diameters: Large-diameter, heavy-wall pipes are secured individually on contoured wooden cradles to ensure even weight distribution.

Domestic Short-Haul: Bare bundles + end caps + partial woven wrapping.

Long-Distance Land Freight: Full wrapping with waterproof woven fabric + heavy-duty steel strapping.

Ocean Freight / High-Precision Piping (e.g., Sanitary or Bright Annealed Pipes): Must be packed in fumigation-free plywood boxes lined with waterproof, moisture-proof film and integrated desiccants.

Heavy Below, Light Above: Thick-walled, large-diameter pipes form the base layer, while thin-walled, small-diameter pipes are placed on top. This prevents gravitational crushing and structural deformation of the bottom layers.

Zero Carbon Steel Contact: This is an absolute "iron rule" in stainless steel logistics. Stainless steel pipes must never come into direct contact with ordinary carbon steel during transport. Doing so triggers "iron contamination," leading to severe electrochemical corrosion (rusting) in humid environments. Physical isolation via wooden boards or rubber mats is mandatory.

Secure Tie-Down Systems: Professional load binders, ratchets, and anti-slip chocks are deployed to eliminate any longitudinal sliding or lateral rolling when the vehicle accelerates, turns, or brakes sharply.