5310 High pressure boiler tubes are seamless carbon and alloy steel pipes made to the GB 5310 standard, with tensile strength between 410 and 640 MPa and yield strength over 245 MPa. They provide reliable heat and pressure resistance, making them well suited for boilers, superheaters, and heat exchangers working at temperatures up to 580 °C.
Product Parameters
|
Item |
Description |
|
Standard |
GB 5310 – Seamless Steel Tubes and Pipes for High-Pressure Boilers |
|
Material Grades |
20G, 15CrMoG, 12Cr1MoVG, or equivalent |
|
Outer Diameter Range (OD) |
10 mm – 426 mm |
|
Wall Thickness Range (WT) |
1.5 mm – 36 mm |
|
Length |
5.8 m – 12 m (customized lengths available) |
|
Manufacturing Process |
Hot-rolled or cold-drawn seamless process |
|
Surface Condition |
Black, oiled, or polished finish |
|
Tensile Strength |
410 – 640 MPa (depending on material grade) |
|
Yield Strength |
≥ 245 MPa (for 20G) up to ≥ 295 MPa (for alloy grades) |
|
Elongation |
≥ 20 % |
|
Working Temperature |
Up to 580 °C depending on alloy composition |
|
Working Pressure |
Up to 16 MPa (based on wall thickness and grade) |
|
Heat Treatment |
Normalized, tempered, or quenched and tempered as required |
|
Dimensional Tolerance |
OD ±1 %, WT ±10 %, length ±50 mm |
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