100tong is specialized in manufacturing of ductile iron grooved fittings, Grooved couplings, couplings, castings, pipe fittings and valves. There are more than 500 skillful workers in the factory. 100tong's annual production value has exceeded 0.2 billion RMB (About 30M USD) specially for grooved products. There are five workshops: Auto-casting workshop, Hand molding casting workshop, Machining workshop, Painting workshop, Moulding workshop.

We have independent intellectual property rights of the new Intelligent Instrumentation and attained many items of national patents. The company has the institute of the valves and grooved fittings. We have many leading current achievements in the same industry. 100TONG has passed ISO 9001 approval and the grooved fittings have been approved by FM, UL, ULC and CE approvals.

It's our pleasure if you can visit our factory