-
About us
Tianjin lefin Industrial
TIANJIN LEFIN STEEL GROUP containing Tianjin lefin Industrial Co.,Ltd. 、Tianjin lefin steel import & export Co.,Ltd and Tianjin Shengqifeng International Trading Co., Ltd. -
Products
Steel Pipe Processing
Our main products include 1/2inch to 16 inch ERW PIPE/GI PIPE which has been produced according to BS1387/ASTM A53/EN10219/EN10255/EN10217 Standard -
-
Service Capability
Guarantee Quality
Our steel pipes are suitable for oil, natural gas, shipbuilding, chemical industry, water conservancy, electrical, steel structure, construction and other related fields.
Our main products include 1/2inch to 16 inch ERW PIPE/GI PIPE which has been produced according to BS1387/ASTM A53/EN10219/EN10255/EN10217 Standard
Our main products include 1/2inch to 16 inch ERW PIPE/GI PIPE which has been produced according to BS1387/ASTM A53/EN10219/EN10255/EN10217 Standard
Has rich experience in steel pipe processing, can be customized according to customer requirements according to the drawing and sample processing, assist in the development of new products.
Cuba EN10217 HOLLOW SECTIONS
Category:
Product Description
Our Products
Standards And Grades:
ASTM A500, ASTM A501, ASTM A252 GR.A, GR.B, GR.C
EN10210, EN10219, EN 10255 S235JRH, S275J0H, S275J2H, S355J0H, S355J2H, S355NH, S460NH
JIS G3466 STKR400, STKR490
AS/NZS 1163 C250, C250LO, C350, C350LO, C450, C450LO
GB/T 3091, GB/T 6728 Q235B, Q355B, Q420B, Q460B, Q550B, Q690B
OD:(SHS)20*20-1200*1200mm WT: 1.3mm-50mm
OD:(RHS)20*30-1200*1500mm WT:1.2-50mm
OD:(CHS)20-660mm WT:1.3-16mm
Length:4m, 6m, 12m or as your required
Brand:LEFIN STEEL
Chemical Composition
Chemical composition(cast analysis)% | ||||||
Steel Grade | C | Si | Mn | P | S | |
P195GH | ≤0.13 | 0.35 | ≤0.70 | 0.025 | 0.020 | |
P235GH | ≤0.16 | 0.35 | ≤1.20 | 0.025 | 0.020 | |
P265GH | ≤0.20 | 0.40 | ≤1.40 | 0.025 | 0.020 | |
Physical Requirements
Mechanical properties for wall thickness T≤16 | ||||||
Steel Grade | Tensile properties at room temperature | |||||
Upper yield strength MPa | Tensile strength Mpa | Elongation % | ||||
longitudinal | transverse | |||||
P195GH | 195 | 320-440 | 27 | 25 | ||
P235GH | 235 | 360-500 | 25 | 23 | ||
P265GH | 265 | 410-570 | 23 | 21 | ||
Material and Process Characteristics
1. Material characteristics:
• Non-alloy steel: based on high-strength steel, excellent pressure resistance, suitable for normal temperature fluid transport (such as oil, natural gas).
• Stainless steel: austenitic or duplex stainless steel material, strong corrosion resistance, suitable for chemical, food processing and other corrosive environment.
2. Manufacturing process:
• Welded steel pipe adopts electric welding or submerged arc welding process, and the surface coating can enhance corrosion resistance.
• Seamless steel pipe is made by perforating process, no welds, overall strength is higher, suitable for high pressure scenarios.
Core Performance Advantages
1. Mechanical properties:
• High compressive strength: seamless steel pipes can withstand extreme pressure (such as oil pipelines).
• Impact resistance: TR2 steel pipe needs to pass impact test to ensure reliability in low temperature environment.
2. Corrosion resistance:
• Stainless steel welded pipe surface treatment (such as galvanizing or passivation) to extend the service life.
3. Dimensional accuracy:
• Seamless steel pipe inner and outer walls smooth, strict tolerance control, reduce fluid resistance.
Typical Application Areas
1. The energy sector:
• Transport oil, gas and water vapor (e.g. heat exchangers, boiler pipes).
2. Chemical and Pharmaceutical Industries:
• Corrosion-resistant stainless steel tube for acid-base medium transmission.
3. Construction and machinery:
• As structural support parts or mechanical parts (such as automotive, Marine parts).
4. Extreme environments:
• Pressure equipment under high or low temperature conditions (e.g. EN10217-2 and EN10217-7 application scenarios).
Selection and Purchasing Suggestions
• Material matching: Select non-alloy steel, alloy steel or stainless steel according to the use environment (temperature, corrosion).
• Standard update: Pay attention to standard version iterations (e.g. EN10217-1:2019 instead of 2002) to ensure compliance with the latest specifications.
Attachment: Comparison with Other Standards
• The difference with EN10219: EN10219 is mainly for cold-formed welded steel pipes, while EN10217 emphasizes welded pipes for pressure applications.
• Compared with ASTM standards: EN10217 pays more attention to the requirements of environmental protection and safety of materials in the European market, and some parameters are stricter than ASTM standards.
Address: Hengtai Road,Daqiuzhuang Town,Jinghai County,Tianjin,China
Mob: +8615122229899(whatspp)
Phone: +86 22 58171905
Fax: +86 22 58171902
E-mail:info@lefinsteel.com
Get company updates
Tianjin Lefin Industrial Co.,Ltd. All rights reserved City sub-station SEO www.300.cn