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ASTM A334 Gr.1 Low-Finned Tube for Low-Temperature Service in the Natural Gas Industry
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ASTM A334 Gr.1 Low-Finned Tube for Low-Temperature Service in the Natural Gas Industry

ব্র্যান্ড নাম: YUHONG
MOQ: 2 পিসিএস
দাম: আলোচনাযোগ্য
অর্থ প্রদানের শর্তাবলী: টি/টি, এল/সি
সরবরাহ ক্ষমতা: ক্লায়েন্টদের প্রয়োজনীয়তা অনুযায়ী
বিস্তারিত তথ্য
সাক্ষ্যদান:
ASTM A333 Gr.1 Carbon Steel Low Finned Tube
উৎপত্তি স্থল:
চীন
পণ্যের নাম:
ASTM A334 Gr.1 কার্বন ইস্পাত নিম্ন ফিনড টিউব
বেয়ার টিউব OD:
10 ~ 38 মিমি
ফিন উচ্চতা:
~ 1.6 মিমি
পাখনার বেধ::
~ 0.3 মিমি
ফিন পিচ:
0.6~2 মিমি
প্যাকেজিং বিবরণ:
স্টিলের ফ্রেম এবং পাইপের উভয়ই প্লাস্টিকের ক্যাপগুলি সহ প্লাই-উডেন কেসগুলি শেষ হয়
গ্রেড গ্রুপ:
Q195-Q345,A53-A369,16Mn,10#-45#,ST35-ST52
পৃষ্ঠ চিকিত্সা:
গ্যালভানাইজড, ঢালাই পিন, কপার লেপা, কালো
সাক্ষ্যদান:
ABS, BV, DNV, CCS, LR
বেয়ার টিউব স্পেসিফিকেশন এবং উপাদান:
ASTM A333 Gr.6
বেয়ার টিউব দৈর্ঘ্য:
শুল্কযুক্ত
অ্যাপ্লিকেশন শিল্প:
এয়ার কুলার (ফিন-ফ্যান কুলার); তাপ পুনরুদ্ধার সিস্টেম; রেফ্রিজারেশন এবং ক্রায়োজেনিক উদ্ভিদ; পেট্রোক
যোগানের ক্ষমতা:
ক্লায়েন্টদের প্রয়োজনীয়তা অনুযায়ী
বিশেষভাবে তুলে ধরা:

ASTM A334 Gr.1 Low-Finned Tube

,

Low-Temperature Service Studded Tube

,

Natural Gas Industry ASTM A334 Gr.1 Tube

পণ্যের বর্ণনা
ASTM A334 Gr.1 low-finned tubes provide significant advantages in natural gas industry applications, combining material standards with optimal performance for low-temperature operations. Manufactured to ASTM A334 specifications, this material is designed for service down to -45°C, making it ideal for critical processes including natural gas liquefaction pre-cooling, BOG (Boil-Off Gas) treatment systems, and LNG storage tank insulation circulation.
The standard requires the material to achieve an average Charpy impact energy of at least 18J at -45°C, with no individual specimen falling below 13.5J. This toughness specification effectively prevents brittle fracture risks common in standard carbon steel pipes under low-temperature conditions, ensuring fundamental safety for natural gas facility operations.
Chemical Composition
Element Composition
Carbon (C) ≤ 0.30%
Manganese (Mn) 0.40-1.06%
Phosphorus (P) ≤ 0.025%
Sulfur (S) ≤ 0.025%
Element Explanations:
  • Low carbon content ensures excellent plasticity at low temperatures
  • Precisely controlled manganese range prevents brittleness while maintaining strength
  • Minimal phosphorus and sulfur content reduces grain boundary embrittlement risks in low-temperature environments
Physical Properties
Property Value
Tensile Strength ≥ 415 MPa
Yield Strength ≥ 240 MPa
Elongation ≥ 30%
Performance Explanations:
  • The tensile-to-yield strength ratio (approximately 1.73) ensures adequate strain hardening capability
  • Minimum 30% elongation exceeds ordinary carbon steel pipes (typically 20-25%), providing superior plastic deformation capacity
  • This strength-plasticity balance is crucial for preventing low-temperature brittle fractures while maintaining load-bearing capacity
Advantages of Low-Finned Structure in Natural Gas Applications
Enhanced Heat Transfer Efficiency
Technical Basis:
  • Low-finned structure significantly increases heat transfer area on ASTM A334 Gr.1 base material
  • High ductility (≥30% elongation) ensures superior fin forming quality
Value in Natural Gas Applications:
  • Enables efficient heat exchange within space-constrained LNG receiving terminals
  • Reduces heat exchanger volume, lowering overall facility footprint and costs
  • Improves BOG handling efficiency and minimizes natural gas losses
Optimized Frost Resistance
Technical Basis:
  • Combines ASTM A334 Gr.1 fine-grained structure with low-finned design
  • Material's thermal expansion coefficient compatibility with fin geometry
Value in Natural Gas Applications:
  • Reduces frost formation on heat exchange surfaces in LNG facilities, extending maintenance cycles
  • Maintains stable heat transfer efficiency, preventing system performance degradation
  • Lowers operational costs and improves equipment availability at LNG receiving terminals
Assurance of Welding Reliability
Technical Basis:
  • ASTM A334 requires material to have "good weldability"
  • Moderate carbon equivalent (controlled by standard chemical composition) ensures welding quality
Value in Natural Gas Applications:
  • Ensures reliability at critical connection points within LNG facilities
  • Reduces leakage risks from welding defects, enhancing natural gas infrastructure safety
  • Accommodates complex on-site welding conditions, guaranteeing construction quality
Specific Application Scenarios in the Natural Gas Industry
BOG (Boil-Off Gas) Treatment System in LNG Receiving Terminals
Application Description:
  • BOG systems handle naturally evaporated natural gas from LNG storage tanks, operating between -100°C and -40°C
  • A333 GR.1 low-finned tubes used in BOG compressor coolers and reliquefaction unit heat exchangers
Manifestation of Standard Advantages:
  • Fine-grained structure from normalization heat treatment enhances material stability during temperature fluctuations
  • High elongation (≥30%) enables material to withstand frequent temperature cycling in BOG systems
  • Low phosphorus and sulfur content reduces embrittlement risk during long-term operation
Natural Gas Precooling Systems
Application Description:
  • Natural gas undergoes multi-stage precooling before LNG liquefaction, with -45°C stage being critical
  • A334 GR.1 low-finned tubes used in heat exchangers for this temperature stage
Manifestation of Standard Advantages:
  • -45°C impact energy requirement (§8.2.1) specifically designed for this operating condition
  • Moderate manganese content range optimizes strength-toughness balance for pressure fluctuations
  • Strict surface quality requirements ensure defect-free tubes, preventing micro-crack propagation
LNG Storage Tank Insulation (Cold Conservation) Systems
Application Description:
  • LNG storage tanks require multi-layer insulation systems to maintain -162°C storage temperature
  • A334 GR.1 low-finned tubes used in interlayer nitrogen circulation cooling systems
Manifestation of Standard Advantages:
  • 18J impact energy requirement provides sufficient safety margin for tank insulation system reliability
  • Fine-grained structure lowers ductile-to-brittle transition temperature for safe operation around -45°C
  • Strict chemical composition control minimizes performance degradation during long-term operation
Intermediate Cooling Stages in Natural Gas Liquefaction Plants
Application Description:
  • Multi-stage cooling process in natural gas liquefaction includes stages operating near -45°C
  • A334 GR.1 low-finned tubes used in heat exchangers for these temperature stages
Manifestation of Standard Advantages:
  • Compatibility with ASME B31.3 Process Piping code simplifies design approval process
  • 30% elongation ensures material withstands temperature fluctuations common in liquefaction processes
  • Clearly defined applicable temperature range (-45°C) provides reliable design boundary