High Quality Steel Bars Made in China Factory
Shandong Huamin Steel Ball Joint-stock Co., Ltd.- Materials：304
- Certification：ISO, GS
- Applications：Oil
- Shape：Round
- Specifications：20
- Standard：Standard
Base Info
- Model NO.：40-120
- Specification：1000kg
- Trademark：huamin
- Origin：China
- HS Code：7228600
- Production Capacity：100000ton,Year
Description
Take the 120MM-140MM diameter heat-treated rod mill steel rod as an example: the wear resistance of the 42CrMo steel rod is about 1.3-1.5 times that of 40Cr, but the price is only about 1.1 times that of it. Material that looks cheap. The price of the two materials is generally around 400.
Let us popularize the standards for heat-treated steel bars:
skills requirement
Relevant standard: YB/T4550-2016
The raw materials of the steel bars are high-quality special steels from well-known steel mills, and the internal inclusions and cracks meet the national standards.
The steel bar should have sufficient hardness: HRC45-55, check the surface hardness. Hot rolling and quenching of steel bars
Special industrial straightening of steel bars, non-straightness ≤ 3/1000, broken bar rate ≤ 3%
Steel rod length tolerance +0mm, -20mmThe length of the steel bar should be hot sawed. If it is not hot sawed, use a grinding wheel or a cutting machine to cut both ends of the bar to a suitable length.
The steel rod shall have sufficient wear resistance and shall not have defects such as cracks, blemishes and distortions.
There are no burrs and cracks on the surface of the steel rod. It has high hardness, good mechanical properties and excellent quality of wear resistance and non-deformation.
