Heat treatment 65Mn mill steel rod standards:
Diameter: ¢50MM-65MM-75mm deviation in line with GB/T699-1999 standard
Grinding ratio: 3:4:3 (Note: not all the rods can be added to the initial grinding. After winning the bid for the supply of detailed information, our company can go to the site for guidance, and the diameter of steel rods in each mill needs to be purchased about 20% of the total rod quantity for subsequent rod addition)
Length: 5850mm deviation +-10mm
Deep processing technology: tempering heat treatment
Hardness: HRC45-55 (hardness is controllable, the hardness range can be adjusted according to customer requirements)
Raw material: 60Mn/65Mn (according to GB/T699-1999 standard)
Test items: ① composition ② surface ③ hardness ⑤ diameter ⑥ length
Note:
1. Ask the manufacturer to provide the material list of the steel mill to ensure that it is the 65Mn material of the large steel mill
2. Go to the site to test the hardness of the steel rod to ensure that it is the product after heat treatment (you can also buy a portable detector about 2500-3000)
3. Sign the bid to record the broken rate of steel rods, and there should be a compensation agreement for the excess part.
Generally, the price of steel bar raw materials is relatively transparent, that is, on the basis of raw materials, plus the heat treatment money and the management cost of the enterprise, generally between 1000-1200, there should be concessions for large quantities, you can also call me.