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After-sales Service: | 6 Months |
Warranty: | 6 Months |
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ASTM A179 A192 A210 St35 St52 1.0305 DIN17175 Carbon Seamless Steel Pipe Hot Rolled Steel Boiler Tube
Out Diameter Torlerances |
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Standard |
Out Diameter |
Tolerance |
GB3087 |
≤180 |
±1.0%(min: ±0.5mm) |
GB5310 |
≤50 |
±0.5mm |
>50 |
±1.0% |
Wall Thickness Tolerances |
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Standard |
Wall Thickness(mm) |
Tolerance |
GB3087 |
3/20 |
+15%,12.5% |
>20 |
±12.5% |
|
GB5310 |
<3.5 |
+15%,-10% |
3.5-20 |
+15%,-10% |
|
>20 |
±10% |
Chemical composition and mechanical properties |
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Standard |
Grade |
Chemical composition(%) |
Mechanical properties |
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C |
Si |
Mn |
P |
S |
Tensile Strength(Mpa) |
Yield Strength(Mpa) |
Elongation(%) |
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DIN17175 |
St35.8 |
≤0.17 |
0.10-0.35 |
0.40-0.80 |
≤0.030 |
≤0.030 |
360-480 |
≥235 |
≥25 |
St45.8 |
≤0.21 |
0.10-0.35 |
0.40-1.20 |
≤0.030 |
≤0.030 |
410-530 |
≥255 |
≥21 |
Seamless pipes made of low carbon steel such as 10 and 20 are mainly used for fluid transportation pipelines. Seamless pipes made of medium carbon steel such as 45 and 40Cr are used to manufacture mechanical parts, such as stressed parts of automobiles and tractors.
Hunan Hengan Weiye Metal Products Co., LTD is subordinate to Hengan Weiye Steel Pipe Co., LTD. After more than 10 years of development, the company has become a leading enterprise in the industry, with more than ten thousand tons of stock, with processing bases in Guangzhou, Tianjin, Hubei and other provinces.
Main business: seamless steel pipe, fine drawing pipe, drill pipe special steel pipe, steel plate, galvanized products, stainless steel series, and production and processing. Under the support and care of friends and Allies from all walks of life, after years of development, the company's performance continues to expand, the annual sales has exceeded 150 million.
At present, it has become a special agent dealer of well-known domestic steel enterprises. Under the situation of fierce market competition, the company has the courage to open up and innovation. At present, the company provides steel projects all over the world.