Shipping Oversize Cargo from China: Flat Rack, Open Top & Project Logistics

Not everything fits in a standard 40-foot container. When your cargo is too tall, too wide, or too heavy for conventional equipment, you need special handling from origin to destination. Here's how oversize shipping from China works in practice.

What Counts as Oversize Cargo?

In ocean freight, "oversize" or "out-of-gauge" (OOG) cargo refers to shipments that exceed the internal dimensions of standard dry containers:

• Over-height: Taller than 2.59 m (internal height of a 40' HC container)
• Over-width: Wider than 2.35 m (internal width)
• Overweight: Exceeding the payload limits (roughly 28 tons for a 40' container)
• Irregular shape: Machinery, vehicles, wind turbine blades, large structural steel

Common examples from Chinese manufacturers include CNC machines, generators, construction equipment, large molds, steel structures, and industrial boilers.

Equipment Options

Flat Rack Containers

Flat racks have a floor and two foldable end walls but no sides or roof. They're ideal for heavy machinery and over-width cargo. Available in 20' and 40' sizes.

• Payload capacity: up to 45 tons (20' FR) or 40 tons (40' FR)
• Can stack on vessel deck with proper lashing
• Requires professional lashing and securing at the port

Open Top Containers

Open tops have standard walls but a removable tarpaulin roof. Best for over-height cargo that fits within standard width.

• Loading via overhead crane
• Maximum height advantage: typically 30–50 cm above standard
• Subject to weather protection requirements

Breakbulk / Project Cargo

For the largest shipments — entire production lines, massive transformers, or wind energy components — breakbulk shipping uses specialized vessels with onboard cranes. This is common in EPC (Engineering, Procurement, Construction) projects.

The Logistics Process

1. Pre-shipment survey: We arrange a site visit or review detailed drawings (dimensions, weight, center of gravity) to determine the right equipment.
2. Route planning: OOG cargo requires verification that ports, terminals, and inland roads can handle the dimensions. Some ports have height restrictions under gantry cranes.
3. Lashing plan: A certified lashing plan is required for deck cargo. We work with IICL-certified surveyors.
4. Carrier booking: OOG slots are limited on each vessel. We book early and confirm deck/under-deck stowage.
5. Customs & documentation: Oversize cargo may require special permits at both origin and destination ports.
6. Last-mile delivery: Lowboy trailers, escorts, and route surveys for final delivery to the job site.

Cost Factors

OOG shipping is significantly more expensive than standard containers. Key cost drivers include:

• Flat rack / open top rental and repositioning surcharges
• Deck stowage premiums
• Lashing and securing fees at the port
• Special handling charges at origin and destination terminals
• Inland transport with oversize permits

As a rule of thumb, OOG freight rates are 2–5× the cost of a standard container on the same route.

Why Work with PikesPeak?

We handle oversize shipments from Chinese ports (Shanghai, Ningbo, Qingdao, Tianjin, Shenzhen) regularly. Our team coordinates the full chain:

• Factory pickup with proper vehicles
• Port-side lashing and surveying
• Carrier negotiation for OOG slots
• Customs clearance at both ends
• Last-mile delivery with specialized trailers

If you have oversized equipment to ship, send us the dimensions, weight, and destination — we'll provide a door-to-door plan within 24 hours.