1. Hoa Phat Group:
Hoa Phat Group is one of the leading steel structure manufacturers in Vietnam. With a wide range of products and services, the company offers customized solutions for industries such as construction, infrastructure, and energy. With a focus on quality products and timely delivery, Hoa Phat Group has gained a strong reputation in the market.

2. Formtek Vietnam:
Formtek Vietnam specializes in the manufacturing of steel structures, including warehouses, factories, and residential buildings. Their state-of-the-art production facilities, coupled with their skilled workforce, ensures high-quality products that meet international standards.

3. Hung Nghia Construction Joint Stock Company:
Hung Nghia Construction Joint Stock Company is known for its expertise in the construction of steel structures for industrial projects. Their innovative design and engineering capabilities allow them to deliver projects on time and within budget.

4. Tungku Steel Company Limited:
Tungku Steel Company Limited specializes in the fabrication of steel structures for heavy industrial applications. The company’s advanced production technology and strict quality control measures ensure that their products are built to withstand harsh environments.

5. Viet Steel Engineering and Construction Joint Stock Company:
Viet Steel Engineering and Construction Joint Stock Company is a major player in the steel structure manufacturing industry in Vietnam. They offer a wide range of services, including design, fabrication, and installation, catering to various sectors such as oil and gas, power plants, and infrastructure development.

6. Tanh Linh Steel Construction Joint Stock Company:
Tanh Linh Steel Construction Joint Stock Company is renowned for its expertise in the construction of pre-engineered steel buildings. They provide comprehensive solutions, including design, fabrication, and erection services.

7. Hoa Binh Construction Group:
Hoa Binh Construction Group is a well-established company in Vietnam with a strong presence in the steel structure manufacturing industry. They have successfully completed numerous projects ranging from residential buildings to commercial complexes.

8. Nam Kim Steel Joint Stock Company:
Nam Kim Steel Joint Stock Company is primarily engaged in the production of hot-dip galvanized steel and pre-painted galvanized steel. They are known for their high-quality products and efficient supply chain management.

9. SSG Group:
SSG Group is a multi-national company that specializes in steel structure manufacturing, construction, and real estate development. With a diversified portfolio of projects in Vietnam and other countries, SSG Group has gained recognition for its innovative approaches and commitment to quality.

10. Linh Nam Steel Structure Joint Stock Company:
Linh Nam Steel Structure Joint Stock Company focuses on the manufacturing and installation of steel structures for industrial buildings, commercial centers, and infrastructure projects. They are known for their advanced machinery and skilled workforce.

11. Ton Duc Thang Steel Joint Stock Company:
Ton Duc Thang Steel Joint Stock Company has gained a strong foothold in the steel structure manufacturing sector. They have a wide range of products, including steel beams, columns, and other structural components.

12. Dai Dung Metallic Manufacture Construction and Trade Joint Stock Company:
Dai Dung Metallic Manufacture Construction, and Trade Joint Stock Company is recognized for its expertise in steel structure manufacturing and fabrication. They are known for providing cost-effective solutions without compromising on quality.

13. Binh Minh Steel Joint Stock Company:
Binh Minh Steel Joint Stock Company specializes in the manufacturing and installation of steel roofs and structures for residential, commercial, and industrial buildings. Their wide product range and commitment to customer satisfaction have made them a preferred choice in the market.

14. Viet Co Steel Company Limited:
Viet Co Steel Company Limited is a prominent name in the steel structure manufacturing industry. They provide comprehensive solutions, including design, fabrication, and installation, for various applications such as warehouses, multi-story buildings, and bridges.

15. Hoa Sen Group:
Hoa Sen Group is one of the largest steel manufacturers in Vietnam. Although they mainly focus on the production of steel sheets and coils, Hoa Sen Group also offers steel structure manufacturing services.

16. Pomina Steel Joint Stock Company:
Pomina Steel Joint Stock Company specializes in the manufacturing and trading of various steel products, including steel structures. They have a wide distribution network across Vietnam, ensuring that their products reach customers in a timely manner.

17. Dong Phat Steel Construction Joint Stock Company:
Dong Phat Steel Construction Joint Stock Company is a reliable provider of steel structure manufacturing and construction services. Their expertise in design, engineering, and project management has enabled them to deliver complex projects successfully.

18. Nam Kim Steel Construction and Trade Joint Stock Company:
Nam Kim Steel Construction and Trade Joint Stock Company focuses on the production and distribution of galvanized steel products, including steel structures. With a strong commitment to sustainable development, they have garnered recognition for their environmental initiatives.

19. Viet Trung Import-Export and Manufacturing Joint Stock Company:
Viet Trung Import-Export and Manufacturing Joint Stock Company specializes in the fabrication of structural steel components. They have a large manufacturing capacity, enabling them to handle projects of varying sizes and dimensions.

20. Binh Phu Steel Furniture Joint Stock Company:
Binh Phu Steel Furniture Joint Stock Company is known for its expertise in the manufacturing of steel furniture and equipment. Though their primary focus is not on steel structure manufacturing, their products cater to various industries, including construction.

Conclusion:
The steel structure manufacturing industry in Vietnam is thriving, and these top 20 manufacturers are at the forefront of this growth. They provide a wide range of products and services, catering to diverse sectors such as construction, infrastructure, and energy. With their expertise, state-of-the-art facilities, and commitment to quality, these manufacturers play a crucial role in Vietnam’s development and provide robust solutions for the country’s steel structure needs.