Dongguan Debiao Steel Tube Co., Ltd.
Address: Building D, No. 40, Fenghuang Road, Dongfang, Humen Town, Dongguan City, Guangdong Province, China
German standard precision steel pipe (Hubei) Co., Ltd.
Address: Debao Industrial Park, Baiyang Park, High-tech Zone, Yichang City, Hubei Province
Tel: 86-0769-85243786 85029864 85564571
Mobile Phone: 86-13058501601 86-13058501602
German as standard · Letter to honesty
The difference between precision hydraulic seamless steel tubes and seamless steel tubes
German Standard Steel Pipe Co., Ltd. is a precision hydraulic steel pipe enterprise integrating production, R&D and operation. The company's products precision hydraulic seamless steel pipe has always been the trust of our customers. The difference between precision hydraulic seamless steel tubes and seamless steel tubes is that: 1. The obvious difference from seamless steel tubes is that they have high dimensional accuracy and can reach 0.1mm.
2. The surface roughness of the inner and outer diameter of precision steel pipe is high, customers can use it without processing; and ordinary seamless steel pipe requires the customer to re-lathe, polish and other processing.
● Precision seamless steel pipe chemical composition:
Carbon C: 0.10 to 0.15 silicon Si: 0.17 to 0.37 manganese Mn: 1.10 to 1.60 sulfur S ≤ 0.035 phosphorus P: ≤ 0.035 chromium Cr: 0.90 to 1.30 vanadium V: 0.03 to 0.06 molybdenum Mo: 0.32 to 0.40 boron B: 0.002 to 0.006
● Precision Seamless Steel Tube Mechanical Properties:
Tensile strength σb (MPa): 868 Conditional yield strength σ0.2 (MPa): 713 Elongation δ5 (%): 17 Elongation δ10 (%): 11 Area shrinkage ψ (%): 62 Impact toughness value Αku (J/cm2): 5 Sample size: A sample
● Precision seamless steel pipe heat treatment specifications and microstructure: heat treatment specification: normalized at 900°C, tempered at 600°C. Metallographic structure: Tempered bainite + a small amount of tempered sorbite.
1. The outer diameter is smaller.
2. High precision can be done in small batch production.
3. High-precision cold drawn products, good surface quality.
4. The transverse area of the steel tube is more complicated.
5. The steel pipe has better performance and the metal is denser.