热交换器用无缝管
热交换器用无缝钢管专为高效传热而设计，广泛应用于石化、电力、制冷、食品加工等行业。
Product Info
Seamless Steel Tubes for Heat Exchangers
Seamless steel tubes for heat exchangers are designed for efficient heat transfer and are widely used in industries such as petrochemicals, power, refrigeration, and food processing. The following is a detailed introduction to this type of product:
Applicable Environment
Working temperature: High temperature environment (up to 600°C or above).
Work pressure: High pressure to ultra-high pressure (usually above 10Mpa).
Applicable media: Steam, high-temperature gases, petroleum, chemical media, etc.
Product Size
Tolerances of the tubes for heat exchangers:
OD tolerance ±0.05mm, ID tolerance ±0.05mm
Tube lengths for heat exchangers:
Usually the tubes are supplied in the production length (5 to 6 meters). A precise length may be supplied upon request.
Wall thickness: 1mm-4mm | Outer diameter: 8mm-50mm |
Material Steel Type
EN 10216-2 | P235GH |
DIN 1629 | St 37.0 |
DIN 17175 | St35.8, 15Mo3 |
DIN 17173 | TTSt35N |
ASTM A179 | A179 |
ASTM A 161 | Grade C, Grade T-1 |
ASTM A 335 | Grade T12 |
Execution Standards
CHINESE STANDARDS | GB9948 |
EUROPEAN STANDARDS | DIN28180, EN10216 |
AMERICAN STANDARDS | ASTM A/SA 179, ASTM A106, ASTM A192, ASTM A199, ASTM A210, etc. |
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 GB9948, DIN28180, EN10216, ASTM A106, ASTM A179, ASTM A192, ASTM A199, ASTM A210, 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. |
