液体用无缝钢管
流体输送和机械部件用钢管是专门为输送流体或制造机械部件而设计的，具有优异的性能和可靠性。
Product Info
Steel tubes for fluid transportation and mechanical components
Steel tubes for fluid transportation and mechanical components are designed specifically for transporting fluids or manufacturing mechanical components, with excellent performance and reliability. The following is a detailed introduction to this type of product:
Applicable Environment
Working temperature:- 20°C ~ 400°C
Work pressure: 0~20Mpa
Applicable media: fluids such as water, gas, petroleum, steam, etc.
Product Size
Tolerances of the tubes for fluid transportation and mechanical components:
OD tolerance ±0.05mm, ID tolerance ±0.05mm
Tube lengths for fluid transportation and mechanical components:
Usually the tubes are supplied in the production length (5 to 6 meters). A precise length may be supplied upon request.
Wall thickness: 0.5mm-5mm | Outer diameter: 2.8mm-50mm |
Material Steel Type
EN 10297-1 EN 10083-2 | E235, E275, E315, E355, E420, E460, E470, E275K2, E355K2, E460K2, E420J2, 20MnV6,16MnCr5, 20NiCrMo2-2, 25CrMo4, 28Mn6, 30CrMo4, 34CrMo4, 38Mn6, 42CrMo4, C10E, C15E, C15, etc. |
ASTM A 53/A530 | Grade A, Grade B |
Execution Standards
CHINA STANDARDS | GB/8163 |
EUROPEAN STANDARDS | EN 10294-1, EN 10297-1, EN 10305-1, DIN 2448, BS 6323/3, NF A 49-311, UNI 4991, UNI 7729 |
RUSSIAN STANDARDS | GOST 8732 |
AMERICAN STANDARDS | ASTM A 53, ASTM A 519 |
JAPANESE STANDARDS | JIS G 3445 |
Technological Advantages & Quality Control
Technological Advantages
With nearly two decades of expertise, Huagang is recognised as a top precision seamless steel tube manufacturer. We integrate R&D, production, quality management, logistics, and global customer service, enabling customers to secure stable supply and consistent product performance.
Our long-term partnerships with global brands demonstrate our capability to meet rigorous quality expectations.
Adopting cold drawn precision seamless technology to ensure high dimensional accuracy, smooth surface, and uniform wall thickness of steel tubes.
After heat treatment and surface treatment, the mechanical properties and corrosion resistance of the steel tube are further improved.
Adopting cold drawn precision seamless technology to ensure high dimensional accuracy, smooth surface, and uniform wall thickness of steel tubes. | After heat treatment and surface treatment, the mechanical properties and corrosion resistance of the steel tube are further improved. |
Delivery Status:
Designation | Symbol | Description |
Cold drawn / hard | +C (BK) | After the last cold forming no heat treatment. |
Cold drawn / soft | +LC (BKW) | After the last heat treatment, follows the cold drawing there is a light finishing pass. |
Cold drawn and stress relieved annealed | +SR (BKS) | After the final cold drawing process, the tubes are stress-relieved and annealed in a controlled atmosphere. |
Annealed | +A (GBK) | After the last cold drawing process, the tubes are annealed in a controlled atmosphere. |
Normalized | +N (NBK) | After the last cold drawing process, the tubes are normalized in a controlled atmosphere. |
Quality Control
Check Each One Individually Hydraulic test: Each steel tube undergoes a hydraulic test to ensure good sealing and pressure bearing capacity in high-pressure environments. Non destructive testing: Using ultrasonic, eddy current, or magnetic flux leakage testing techniques to detect internal defects in steel tubes and ensure product quality. | Testing Standards Compliant with international standards such as GB/T 8163, GB/T 3087, GB/T 5310, DIN, JIS, EN, ASTM, etc. Each batch of products comes with detailed quality inspection reports and certificates of conformity. | Certification Guarantee Obtained ISO/TS16949:2009 quality system certification and obtained the national special equipment pressure pipeline component manufacturing license. |
