Importing Plastic Injection Molding Machines from China

An injection molding machine is the heart of any plastics factory, turning raw resin into everything from bottle caps and household goods to automotive and packaging parts. China builds more injection machines than anywhere on earth, at prices that make a new plastics operation viable in Saudi Arabia. But these are heavy, high-precision machines, and sizing or configuring one wrong is a six-figure error. This guide explains how to specify, source and import the right machine for your molds.

Machine types and how to size them

Injection machines are defined mainly by clamping force in tons, which must match your mold and part. Too little tonnage and the mold flashes; too much and you overpay and over-consume energy.

• Hydraulic — lowest purchase cost, robust, higher energy use. Good for large, simple parts.
• Servo-hydraulic — the modern standard: hydraulic power with a servo motor that cuts energy use 30–60%. The best value for most Saudi factories.
• All-electric — highest precision, cleanest, most energy-efficient, higher price. Ideal for medical, thin-wall and high-cycle production.

Size the machine from your mold: clamping force, shot weight, tie-bar spacing and screw diameter must all fit the part. If you already have molds, share their drawings so the builder confirms compatibility before you buy.

Where to source in China

China's injection-machine industry is concentrated around two regions. Ningbo in Zhejiang is the injection-molding capital and home to the biggest names, while Guangdong (Dongguan, Shenzhen) hosts a dense cluster of builders and mold makers.

Buy on tier. Haitian is the world's largest maker and the safe tier-one choice, with brands such as Chen Hsong, Yizumi, Bole and Borche as strong tier-one and tier-two options. Cheaper unbranded machines may look identical on paper but use lower-grade servo drives and controls (look for KEBA or a reputable controller) and screws that wear quickly. The barrel and screw metallurgy, the servo brand and the control system are what separate a ten-year machine from a two-year one.

What to check before you pay

Because these machines are so capital-heavy, verification is essential. Insist on a Factory Acceptance Test, ideally running your own mold.

1. Run a FAT with your mold if possible, confirming clamping force, shot weight, cycle time and repeatability.
2. Confirm the servo motor and controller brand, and screw and barrel material (bimetallic is preferred).
3. Verify CE marking and safety guarding, plus a clear warranty (typically 1–2 years, longer on the screw).
4. Do not forget auxiliaries: chiller, mold-temperature controller, material dryer, hopper loader and a robot if needed — these are essential, not optional.
5. Agree a spare-parts kit (seals, heaters, sensors) and remote or on-site installation, commissioning and training.

Shipping, installation and cost

Injection machines are very heavy — a mid-size machine weighs several tons, large ones tens of tons — so freight and rigging are serious. Smaller machines fit a 40ft container; large tonnage needs flat-rack or breakbulk to Jeddah or Dammam, plus a crane and skilled riggers to place it on a level, reinforced floor.

As a rough guide, a 100–160-ton servo machine runs about SAR 60,000–120,000; a 250–500-ton machine lands around SAR 130,000–350,000; and 1,000-ton-plus machines exceed SAR 700,000, before auxiliaries. Lead time is usually 30–50 days for build plus sea transit. Confirm 380V three-phase supply and adequate cooling water on site.

Common mistakes to avoid

• Undersizing clamping force so the mold flashes and the part fails.
• Buying the machine but forgetting the chiller, dryer and mold-temperature controller.
• Choosing an unbranded servo and controller to save money, then facing constant faults.
• Ignoring floor loading and cooling-water needs until the machine arrives.
• No spare heaters or seals, leaving a costly machine idle.

How Terrace International helps

Terrace International has a team on the ground in Guangzhou that visits injection-machine factories in Ningbo and Guangdong on your behalf. We match tonnage to your mold, run the FAT with your own tooling, verify the servo, controller and screw quality, specify the right auxiliaries, and manage CE, SABER, heavy crating and freight to Jeddah or Dammam. From a single 120-ton machine to a full molding shop, we handle sourcing, quality control and shipping end to end. Contact us to import the right injection machine from China with confidence.