Our company attaches great importance to scientific management and new product development. While consolidating and developing original products, we continue to develop new series of 1.2379 Knife steel price per kg, Grade 5 titanium alloy price per kg, Free Cutting Steel. While satisfying the best user experience and continuously interacting and iterating with users, our company has built a co-creation and win-win ecology with our customers and partners. We welcome all customers.
4140 alloy seamless steel tubing
4140 alloy seamless steel tubing is a kind of high strength, high wear resistance steel pipe, also known as CrMo alloy steel pipe. It has excellent mechanical properties, high yield strength and tensile strength, and excellent wear resistance. Therefore, it is widely used in machining, manufacturing industry, automobile, aviation, petrochemical, construction and other fields.
We strictly implement the ISO9001:2000 quality system standard in the production process to ensure that each 4140 steel pipe quality is stable, safe and reliable. We use the most advanced production equipment and technology, through precision machining, heat treatment and other links, to achieve higher precision and quality requirements.
In addition to quality assurance, we also focus on providing better service to our customers. Our team of engineers and sales representatives with many years of experience can help customers choose the most suitable products and provide them with quick response and comprehensive support.
The standard is listed below
ASTM4140 SCM440 42CRMO4 1.7725 alloy seamless steel pipe.
42CrMo steel belongs to ultra high strength steel, with high strength and toughness, hardenability is also good.

technical parameters
| - | C: | Si: | Mn: | S: | p: | Cr: | Ni: | Cu: | Mo: |
| Chemical component | 0.38-0.45% | 0.17-0.37% | 050-0.80 | ≤0.35% | ≤0.35% | 0.90-1.20% | ≤0.30% | ≤0.30% | 0.15-0.25% |
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Mechanical property |
Tensile strength σ b/MPa) :≥1080 Yield strength ( σ s/MPa):≥930← Elongation ( δ 5/%) :≥12← |
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Products feature
Our 4140 alloy seamless steel pipe offers the following advantages:
1.High strength and durability - The use of high-quality steel raw materials for production, to ensure the high strength and durability of the steel pipe.
2. Excellent corrosion resistance - Our steel pipes have been carefully treated to ensure that they have excellent corrosion resistance and can maintain their properties during long-term use.
3. High precision - We use advanced production technology and equipment for production, and carry out many fine processing of the product to ensure the high precision of the product.
4. Uniform stripes - Our steel pipe has been treated with professional production technology to ensure that its outer surface stripes are uniform and beautiful.
Our company is committed to the production of high-quality steel pipe products, and in strict accordance with international standards to ensure product quality and performance. We always put the needs of customers in the first place, through positive service to provide customers with high-quality steel pipe products.

Stock tube

Product Quality Assurance
We control the quality of every detail and provide you with quality service.
1: Strict selection of high-quality steel raw materials that meet the standards, and upper materials forging upper products.
2: Strictly control the production of steel products during the forging and casting process. Don't take small things for granted, and achieve true quality control.
3: Strictly control each link of product sampling test, keep improving, and select quality.
4: In strict accordance with international standards


Our Service

Our company has strong new product development ability and fast response ability and advanced international design concept, we closely follow the development of new technology in the world, and launch all kinds of high performance and high reliability AISI 4140 Seamless Steel Tube 4140 Steel Pipe. We provide customers with perfect service quickly and sincerely, continuing to find problems and improve, because we believe that there is always room for further improvement. We adhere to the concept of sustainable development to contribute to the protection of the environment through continuous innovation to improve energy efficiency, reduce emissions and save resources.

