Forged Steel Hollow Bored Bar
- HHF
- China
- 2 months
- 200pcs per month
Forged alloy steel hollow bored bar is one type of our products. We (HHF) own forging workshop, rough machining workshops, heat treatment workshop amd final machining workshops . And we also have a National Level II lab. Accordingly, the whole progress and quality can be controlled very well.
Our forged alloy steel hollow bored bars are made of 4145H, 4140, 4340 etc materials.
Manufacturing time( quick) is also our big advantage for steel round bar.
Our national level II lab controls the quality.
Product Introduction
Henan Zhongyuan Heavy Forging Co., Ltd. (HHF) is a national high-tech enterprise. There are four production branches for forging, heat treatment, petroleum equipment, and mechanical processing, a provincial oil drilling tool stabilizer engineering technology research center, a physical and chemical laboratory, and a municipal technology research and development center. The company is an American API Q1 quality system certification and API 7-1 drill stabilizer drill collar logo certification enterprise, and it has obtained CSSC quality system certification and ISO 9001:2008, ISO/TS29001 international quality system certification.
Forged Steel Hollow Bored Bar
CHEMICAL COMPOSTION OF 4430V STEEL HOLLOW BORED BAR
C | Mn | P | S | Si | Ni | Cr | Mo | V |
0.28~0.37 | 0.45~0.65 | ≤0.015 | ≤0.015 | 0.1~0.3 | 2.0~3.0 | 0.80~1.10 | 0.4~0.65 | 0.05~0.15 |
MECHANICAL PROPERTIES：
TENSILE STRENGTH | ≥1033Mpa（T) ≥1033Mpa(L) |
YIELD STRENGTH | ≥964Mpa（T) ≥964Mpa(L) |
ELONGATION | ≥10.7%（T) ≥15%(L) |
IMPACT | ≥90J(T) ≥50J(L) |
REDUCTION AREA | ≥32%（T) ≥45%(L) |
About Us
Henan zhongyuan Heavy Forging Co.,Ltd(HHF) founded in 2006, the company has accumulated nearly 20 years of deep professional experience and technological expertise in the field of heavy-duty forging.
The factory covers an area of approximately 150 mu (about 100,000 square meters). The company operates 3 large-scale open-die forging production lines (with core equipment including 10,000-ton hydraulic presses), 2 modern die forging production lines, along with supporting large-scale CNC machining centers, heat treatment lines, and a well-equipped National Class II laboratory. The company has an annual production capacity of 50,000 tons for large open-die and die forgings (with the ability to produce single pieces weighing over 30 tons).
Forged alloy steel hollow bored bar represents a flagship product within our comprehensive portfolio. As a fully integrated manufacturer, HHF operates a complete, in-house production chain. Our facilities encompass a state-of-the-art forging workshop, dedicated rough machining workshops, a specialized heat treatment workshop, and precision final machining workshops. This vertical integration allows us to oversee and control every critical stage of production seamlessly. To ensure the utmost quality, we are equipped with a certified National Level II laboratory. This enables us to implement rigorous, data-driven quality control throughout the entire manufacturing process, from raw material inspection to final product verification, guaranteeing exceptional consistency and performance.
Our forged alloy steel hollow bored bars are manufactured from premium-grade alloy steels, including but not limited to 4145H, 4140, and 4340. These materials are selected for their superior mechanical properties, such as high strength, excellent toughness, and good hardenability, making our bars ideal for demanding applications in sectors like oil & gas, heavy machinery, and power generation.
The company currently employs nearly 500 people, including a dedicated R&D team of over 50 professionals, consisting of senior engineers and technical experts focused on developing new processes, materials, and technological innovations.
According to the physical and chemical laboratory construction of National Grade 2 standards, can meet the tensile test, minus 80 degrees Celsius temperature impact, chemical composition analysis,metallographic analysis, non-metallic inclusion analysis,gas content analysis,grain size analysis and nagnetic induction intensity,no magnet magnetic induction gradient and intergranular corrosion test.
FAQ
1.Wha's your quote time?
Normally, it is up to 3days. We need to understand your requirements and critical dimensions.
2.How is quality controlled?
A. We have a dedicated QA team. B. We shall do one sample run, then a small batch run before mass order.For a sample order.
3.Can I come and visit you?
Yes, of course. We are pleased to welcome you to visit our company and discuss technical details and requirements with our team.
4.What's the production lead time?
Our pruction progress is from forging, rough machining ,Q+T to final machining.Itis usually 45days.
5.what are your payment terms?
We typically ask for 30% down payments to launch production, 70% balance before delivering goods.
