30CrMo Steel Seamless Cold Rolled Alloy Steel Tube 4130 Steel Oil Well Pipe For Oil Drilling with Excellent Microstructure

4130 (30CrMo) Steel: A Reliable Partner for Oilfield Drilling Pipes
In the field of oilfield drilling, the performance of materials is the key to determining the quality and stability of drilling pipes. Today, we introduce 4130 (30CrMo) steel. With its excellent performance, it has become a preferred choice for industries such as oilfield drilling and water well drilling.

Product Parameters and Performance
Basic Specifications
The specifications of the steel supplied this time are Φ69.85×Φ60.33×3060. It meets the customer's technical requirements and is delivered in the stress - relieved and annealed state.

Precise Chemical Composition
Elements such as C, Si, and Mn are strictly controlled. For example, the C content ranges from 0.28 - 0.33 and the Cr content ranges from 0.80 - 1.10. This ensures the stable basic performance of the material and its adaptability to complex working conditions.
Outstanding Mechanical Properties
It has a tensile strength of more than 800 MPa, a yield strength of more than 720 MPa, and an elongation of more than 15%. The hardness can reach HRC 25 - 28, and the grain size is more than 8.0 grades. It combines high strength - toughness and processing stability. Eddy current inspection, dimensional inspection, and surface quality inspection all meet the standards.

Application Scenarios and Advantages

Applications include fore poling (advance support), mine blasting, water well drilling, geothermal well drilling, and coal/nonferrous metal mining.​​ It is suitable for oilfield drilling and water well drilling. Its high strength - toughness can withstand complex stresses. The precise composition and processing technology ensure dimensional stability, reducing the risk of later - stage use, and helping enterprises improve the user experience and durability.

Quality Assurance and Service
Strict quality inspection is carried out before delivery. In case of quality problems, you can provide feedback with the material information, and the supplier will respond quickly, providing full - process support for your procurement and use.

Chemical Composition

Mechanical Properties

Delivery Condition:

1. Stress Relief Annealing after Cold Working (+SR) (BKS)

2. Normalizing (+N) (NBK)

3. Quenching & Tempering (QT)

Jiangsu Hongbao Group (Pipe) Co., Ltd. (Zhangjiagang Hongda Pipe Co., Ltd.) is a high-tech company in Jiangsu province. The company has a registered capital of RMB 89 million, covers an area of 130,000 square meters, employs 600 staff, and has annual sales of RMB 400 million. The company is specialized in producing and selling high-end bearing tubes, auto alloy tubes, titanium and titanium alloy tubes, nickel and nickel-based alloy tubes, refrigerator condenser tubes, aluminum and aluminum alloy tubes and the like.

The company focuses on the development of new products, and has successively developed high diameter-wall ratio titanium-molybdenum-nickel alloy seamless steel tubes, nuclear power plant reactor driving mechanism used martensite stainless steel seamless steel tubes, auto critical components used alloy steel tubes, high-end refrigerator used corrosion-resistance galvanized condenser tubes, marine engineering and complex environment oilfield used high-strength corrosion-resistance G3 tubes, among which, nuclear power plant reactor driving mechanism used martensite stainless steel seamless steel tube has obtained high-tech product certificate of the province.

At present, the company has obtained authorization for 7 patents for invention, and 8 patents for utility model.