Dunfa strongly believes in delivering Quality products at all times to our valued Customers. To ensure highest quality in our products manufacturing, we strictly control every process.
Manufacturing Range Outside Diameter : 20mm~50mm
Material Specification
Medium Carbon Alloy Steel C-CH35ACR 、 C-CH40ACR
Boron Steels and Cr-V-B Steels 50BV30、 10B20、10B21、10B22
JIS G3507 Carbon Steel Wire Rods Low and Medium Carbon Steels
JIS G4053 Low-alloyed Steels SCM435 、 SCM440
SAE Nonresulfurized Carbon Steels Low and Medium Carbon Steels
