Standard: TB/T2345-2008
Material: Chinese steel grade 55#
Size: 43KG , 50KG, 60KG, 75KG
Chemical Composition
C Mn Si S P
0.52-0.60 0.50-0.80 0.17-0.37 ≤0.035 ≤0.035
Mechanical Property
Tensile strength Rm : ≥785 Mpa
Yield strength Rel / Rr0.2 : ≥520 Mpa
Elongation A : ≥9%
Reduction of Area Z: ≥20%
Brinell Hardness HBW10 / 3000 : HBW 227-388
Cold Bend d=3a : 30 degree, no crack
The company:
1.Brand:Zhengzhou zhongzhigang machinery equipment Co.,Ltd is specialized in manufacturing machinery equipment and railway tools, parts, equipment,We are committed to researching and developing all kinds of railway and machinery processing equipment. Our main products include all kinds of Bench drill, railway parts, hardware tools, electrical equipment, bearings and other related accessories Our products have been exported to more than 20 countries and regions, such as Russia, Africa, Australia, Middle East, South America with our outstanding quality, competitive price and on-time considerate service. We have won a high reputation from our esteemed customers.
2.Experience & Profession: Our parent company is an enterprise specialized in research and manufacture of rail transport equipment in China, and is the first-class large-scale company in China's railway equipment manufacturing industry. It has a history of more than 100 years in the railway vehicle field and its products sold to 18 railway bureaus and local railways.
3.Why choose us?
? Customized products that meet the demand of running in different environments. In order to ensure the products performing well in local conditions, We could design and manufacture products according to basic needs of clients.
4.High quality after-sale service: We will provide professional technical stuff to the site for after-sale services, at the same time, we are also a professional agency of railway equipment.
Brand: Zhengzhou zhongzhigang machinery equipment Co., Ltd is specialized in manufacturing machinery equipment and railway tools, parts, equipment, We are committed to researching and developing all kinds of railway and machinery processing equipment. Our main products include all kinds of Bench drill, railway parts, hardware tools, electrical equipment, bearings and other related accessories Our products have been exported to more than 20 countries and regions, such as Russia, Africa, Australia, Middle East, South America with our outstanding quality, competitive price and on-time considerate service. We have won a high reputation from our esteemed customers.
2. Experience & Profession: Our parent company is an enterprise specialized in research and manufacture of rail transport equipment in China, and is the first-class large-scale company in China's railway equipment manufacturing industry. It has a history of more than 100 years in the railway vehicle field and its products sold to 18 railway bureaus and local railways.
3. Why choose us?
• Customized products that meet the demand of running in different environments. In order to ensure the products performing well in local conditions, We could design and manufacture products according to basic needs of clients.
4. High quality after-sale service: We will provide professional technical stuff to the site for after-sale services, at the same time, we are also a professional agency of railway equipment.
