There are several reputable SSAW (Spiral Submerged Arc Welded) steel pipe manufacturers in China known for producing high-quality products. Here are some well-known manufacturers based in China:

1. Shanghai Jiafang Pipe Manufacturing Co., Ltd.:

Location: TaiCang, JiangSu Province

Products: Specializes in the production of SSAW Steel Pipes for various industries including oil and gas, construction, and water transportation.

2. Tianjin Xinyue Steel Group:

Location: Tianjin

Products: Offers a wide range of SSAW Pipes used in oil and gas transmission, structural and piling applications, and more.

3. Threeway Steel Co., Ltd.:

Location: Changsha, Hunan Province

Products: Produces SSAW steel pipes for applications in petroleum, natural gas, water, and construction industries.

4. Tianjin Youfa Steel Pipe Group:

Location: Tianjin

Products: One of the largest manufacturers of steel pipes in China, offering a variety of products including SSAW pipes for different applications.

5. Hunan Standard Steel Co., Ltd.:

Location: Changsha, Hunan Province

Products: Manufacturer of SSAW steel pipes for industries like oil and gas, construction, and water transportation.

6. Rizhao Top Steel Co., Ltd.:

Location: Rizhao, Shandong Province

Products: Produces SSAW steel pipes for applications in oil and gas transmission, structural construction, and more.

7. Baosteel Group Corporation:

Location: Shanghai

Products: One of the largest state-owned enterprises in China, Baosteel produces a wide range of steel products, including SSAW pipes, known for their quality and reliability.

8. Hunan Great Steel Pipe Co., Ltd.:

Location: Changsha, Hunan Province

Products: Specializes in the production of SSAW steel pipes for applications in oil and gas transmission, water transportation, piling, and structural purposes.

9. Zhejiang Kingland Pipeline and Technology Co., Ltd.:

Location: Zhuji, Zhejiang Province

Products: Manufacturer of SSAW steel pipes with a focus on high-quality production processes and adherence to international standards.

10. Tianjin Zhongshun Petroleum Steel Pipe Co., Ltd.:

Location: Tianjin

Products: Produces a variety of SSAW steel pipes for applications in the oil and gas industry, construction, and infrastructure projects.

11. Shinestar Holdings Group:

Location: Changsha, Hunan Province

Products: Offers a range of steel pipes, including SSAW pipes, for applications in industries such as oil and gas, construction, and water supply.

12. Jindal SAW Ltd. (China):

Location: Various locations in China

Products: A subsidiary of the Indian company Jindal SAW Ltd., this manufacturer produces SSAW steel pipes for the global market, including China.

13. Hunan Prime Steel Pipe Co., Ltd.:

Location: Changsha, Hunan Province

Products: Specializes in the production of SSAW steel pipes for various applications including oil and gas transportation, structural construction, and water conveyance.

14. Shanghai Baobo Steel Pipe Co., Ltd.:

Location: Shanghai

Products: Manufacturer of SSAW steel pipes known for their quality and reliability, serving industries such as oil and gas, construction, and infrastructure.

15. Wuxi East Steel Pipe Co., Ltd.:

Location: Wuxi, Jiangsu Province

Products: Produces a range of SSAW steel pipes for applications in industries like oil and gas, water transportation, and structural engineering.

16. Jiangsu Yulong Steel Pipe Co., Ltd.:

Location: Jiangsu Province

Products: Manufacturer of SSAW steel pipes with a focus on high-quality production processes and meeting industry standards for various applications.

17. Shanxi Guanghua Steel Pipe Co., Ltd.:

Location: Shanxi Province

Products: Produces SSAW steel pipes for industries including oil and gas, construction, and water supply, known for their durability and performance.

18. Tianjin Boyu Steel Pipe Co., Ltd.:

Location: Tianjin

Products: Specializes in the manufacturing of SSAW steel pipes for applications in oil and gas transmission, construction, and infrastructure projects.

19. Tianjin Huilifeng Anti-Corrosion And Insulation Steel Pipe Co., Ltd.:

Location: Tianjin

Products: This company specializes in the production of SSAW steel pipes with a focus on anti-corrosion coatings and insulation for pipelines used in various industries.

20. Tianjin Youfa Dezhong Steel Pipe Co., Ltd. (YOUFA):

Location: Tianjin

Products: YOUFA is a prominent manufacturer of SSAW steel pipes in China, offering a wide range of products for applications in oil and gas, structural construction, and more.

21. Tianjin Credit Import and Export Trading Co., Ltd.:

Location: Tianjin

Products: This company is known for supplying high-quality SSAW steel pipes for projects in industries such as oil and gas, construction, and water supply.

22. Tianjin Shenzhoutong Steel Pipe Co., Ltd.:

Location: Tianjin

Products: Specializes in the production of SSAW steel pipes for applications in petroleum, natural gas, and other industries, with a focus on quality and reliability.

23. Tianjin Xinyue Industrial and Trade Co., Ltd.:

Location: Tianjin

Products: This company manufactures SSAW steel pipes for a variety of applications, including oil and gas transportation, structural construction, and piling projects.

24. Tianjin Ruijie Steel Pipe Co., Ltd.:

Location: Tianjin

Products: A manufacturer of SSAW steel pipes catering to industries such as oil and gas, construction, and infrastructure development, known for their product quality.

These manufacturers are known for their adherence to quality standards, advanced manufacturing processes, and the production of a wide range of SSAW steel pipes to meet various industry needs. When looking for a specific manufacturer, it's important to conduct thorough research, check their certifications, quality control measures, and customer reviews to ensure you are partnering with a reliable supplier.

Please verify the current status and reputation of these manufacturers before making any sourcing decisions, as the industry landscape may have changed since my last update.