No. 99 Yilan Rd., Xiamen , CN.
+86 186 5928 0806

Heavy Welding & Large Weldments

With 250 ton lifting capacity, Openex offers heavy welding and fabrication services to meet the most large-scale requirements. We offer X-ray certified welding.

Openex is equipped with state-of-art welding equipment, skilled personnel,s and years of experience in multiple welding processes. Our welders are certified to the requirement of AWS,  ASME, ISO 3834, and other custom requirements. Like with our machining and forming equipment, Openex invests in innovative technology to maximize efficiency.

Our welding machines include welding robots, Plasma welder, strip surfacing machine, Cross welder, saddle welding machine, Lincoln welding machine, and gantry welding machines about 231 sets, support welding methods including AW, SMAW, MAG, MIG, TIG, PAW.

Materials: steel, stainless steel, aluminum, titanium, nickel-chrome, copper, etc.

Some cases of our large weldments:

Large dryer cylinder welding hydraulic press steel fabrication lifting and transporting Heavy Welding of pressure vessel Quality control Pipeline Structures welding  mining dump body excavator bucket reach stacker

more cases, visit our project cases

Pictures below are some welding equipment:

Welding Robot in working

Building a wind tower needs to weld the pipes. A machine base needs welding for many parts. Building pressure vessels need welding too, and building any steel structure in the construction field needs to weld all kinds of beams, and posts. Welding holds an important position in metal fabrication.

robot welding

Pipeline welding machine

Our plasma welding machine SAF PL130(made in France) can weld thickness 1-10mm length 12.5m metal tube.

beam welding

We have a strip surfacing machine, with a turntable 7 meters and load capacity of 100 tons, for high-demanding weldments like nuclear equipment or pressure vessels welding tasks.

strip surfacing


At Openex, we carry out regular inspections on our welding equipment to ensure they’re in sound condition and operating effectively. Our welders undertake frequent training and engage in welding contests to promote professional welding and working efficiency.

Our welders have been already certified by AWS, CSS, RINA, LR, DNB, and API and expect to pass certificates of ABS, ASME and ASIC as well.

We also introduced many advanced machining centers from Europe, America, Japan, and other countries. With those advanced facilities, we can offer a complete metal fabrication service including slitting, cutting, grinding, forming, heat treating, machining, painting, testing, and assembling.

If you would like to engage Openex for your next metal fabrication project, feel free to contact us or request a quote at


About Openex

Openex is home to a full-service, one-stop-shop, contract manufacturing company producing custom large machined parts and fabrications. Our full large fabrication services including large machining, cutting, welding, rolling, punching, braking, testing, painting, and others.
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