SD (SHANGHAI DONGLUO PRECISE MACHINE INDUSTRIAL CO., LTD) is a market renowned manufacturer and distribution supplier of threaded fasteners and precise machined parts. Serving equipment manufacturers and industrial users in power generation, automobile, mining, transportation, petro-chemical, marine forming etc. Experience , integrity and reliability are fundamental principles upon which our business is built.
SD modern production plant contains extensive machining, forging, thread rolling and grinding equipments manufacturing.

Manufacturing capabilities are as following:
- FORMING
Hot Heading 、Hot Nut Forming、Thread Rolling.
- MACHINING
CNC Turning、CNC Milling、Slotting、Tapping、Broaching 、Thread Cutting、Grinding ( Center-less / Surface / O.D / I.D )
- TESTING AND INSPECTION

All products are manufactured from quality materials meeting the physical and chemical requirements of ANSI, ASTM, DIN, ASME, NACE. All special customer requests are readily accommodated.

Main materials we are applied now:
ASTM A193 GrB7, B8, B8M, B16 for studs, bolts,nuts and other special fasteners.
16MnCr5 (DIN), 20CrMoH (JIS), 4140(ASTM) for machined parts.
SS304, SS316, SS316L, SS304L. SS410 , SS422for both fasteners and machined parts.

Superior capability and capacity allow us to provide infinite solutions for the fasteners and machined parts requirements, whatever the job description: Large or small, complex or simple.

SD has established long term cooperative relationship with customers from many countries in the world. We seek to develop together with our customers in a win-win situation.
Please feel free to contact us if you are interested in our products or company. We wish to extend our warm welcome to our customers: old or new, to enter into business relationship and cooperate to jointly built a brilliant future.