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Black Steel Internal Door

Black steel internal door is made of two pieces 0.3-0.6mm thickness galvanized steel panel per customer request, and the frame is 1.0-1.2mm thickness galvanized steel panel. We usually pack the door slab and frame separately to load more quantities for one container, the frame is Knock-down Structure and we can provide the technical video for assembling.


The Black Steel Internal Door is made of two pieces of 0.3-0.6 mm thick galvanized steel sheets according to customer’s requirements, and the frames are 1.0-1.2 mm thick galvanized steel sheets. Secondly, we usually pack the door panel and frame separately in order to load more quantity in one container. The door frame is of knock-down construction and we can provide the technical video of assembly. According to our packing technology, our customers can save a lot of transportation cost and warehouse cost. Finally, our products are inexpensive and good quality, which is loved by our customers.


The edges of the door frame of Black Steel Internal Door fit tightly, and the surface texture is realistic, with the special features of firm edges and smooth touch. Secondly, our products are very easy to load and unload, no tools or rods are needed, so please keep them strong. And we use high quality materials to make it, with the characteristics of non-toxic and tasteless. Finally, our products also have the characteristics of sturdy and durable, with a very long service life.


Brand NameGold TortoiseDoor Leaf Size750mm, 800mm, 840mm, 900mm*2000mm
Place of OriginGuangdong, ChinaDoor Leaf Thickness45mm
Door Skin0.3 to 0.6mm galvanized steelFrame Steel Thickness1.0 to 1.2mm galvanized steel
Surface Treatment Powder coating/PVCFrame Size4.25″, 5″, 6″, other width is available
ColorBlack, black walnut, customized colors availablePacking MethodWith pallet
CertificatesSONCAP in NigeriaLoading CapacityAbout 900-1000 sets for 40HQ

 * Customized sizes, colors and models are acceptable.

Our Factory

Golden Tortoise is a leading manufacturer of steel doors in China. Our factory occupies 500,000 square feet, located in Guangdong province, only an hours drive from Guangzhou Baiyun airport. Founded in 1996, we have 27 years of experience in making doors, and we were the first factory to introduce knock-down steel door frames from Australia. We hold over 100 invention patents and advanced production technology, and enjoy a good reputation in the industry. 


Q: Why choose Gold Tortoise?

A: We have been a professional steel door factory for 20 years. You can buy from us with factory price, factory quality, factory service directly.

Q: Can you make black steel internal door according to our drawing?

A: Yes,we can. Pls send us your sketch with style and size details for our technical department, we will check and get back to you with production and cost details.

Q: How about your warranty?

A: 5 years warranty.

Q: Where is your port of shipment?

A: Guangzhou or Shenzhen, China

Q: What’s your payment term?

A: T/T, L/C.

Why Choose Us?

  • We use environmentally friendly and safe materials in the manufacturing of our Interior Steel Doors.
  • We are an energetic firm with wide market for Black Steel Internal Door.
  • Our Interior Steel Doors are available in different styles and finishes.
  • We are guided by the supremacy of efficiency, and energy saving and consumption reduction as the criterion.
  • We offer competitive pricing for bulk orders of our Interior Steel Doors.
  • Our actions are forward-looking, and we are constantly adjusting our positioning in order to seize the opportunities of vigorous development in the next few years.
  • Our Interior Steel Doors are made with the finest materials to ensure durability.
  • We provide products according to user needs, so that enjoy a good reputation in the international market and build a well-known brand.
  • Our Interior Steel Doors are stylish and customizable to enhance any interior design.
  • Our company has built stable business relationships with many well-known domestic companies as well as oversea customers.

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