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About product and suppliers:
        Alibaba.com offers 5,455 thick metal door products. About 5% of these are doors, 1% are fencing, trellis & gates. 

A wide variety of thick metal door options are available to you, such as entry doors, security doors, and special doors. You can also choose from steel, aluminum alloy, and stainless steel. As well as from exterior, interior, and commercial. And whether thick metal door is swing, sliding, or rolling. 

There are 5,455 thick metal door suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of thick metal door respectively. 

Thick metal door products are most popular in Western Europe, North America, and Northern Europe. 

You can ensure product safety by selecting from certified suppliers, including 1,935 with ISO9001, 660 with ISO14001, and 473 with Other certification.