This product adopts 10B21 wire rod, cold heading forming,10B21 is American standard material, grade is carbon steel material, general name is boron steel, cold heading steel rod.
According to the new standard GB/ T30981-2010, 10.9 class can not be produced, but below 9.8 class can be produced.
The surface is electroplated black zinc, PE bag + carton packaging shipping.
Tiansheng non-standard customized development and production of fasteners for 12 years, welcome to visit the guidance.
Can be customized by drawing/sample.
