GB/T 25822 LZ320E Shaped and Round Seamless Steel Tubes for Axle, ASTM A500/A500M, LZ320E, LZ355E, LZ460E, LZ500E, LZ590E

GB/T 25822 Shaped and Round Seamless Steel Tubes for Axle

Standard: GB/T 25822
Equivalent Standards: ASTM A500/A500M

Material: LZ320E
Equivalent Material: 1010, St35.8, P235TR1, P235TR2

Chemistry Composition

C, %	Si, %	Mn, %	P, %	S, %	Cr, %	Ni, %	Cu, %
0.07-0.13	0.17-0.37	0.35-0.65	0.025 max	0.025 max	0.15 max	0.30 max	0.25 max

Mechanical Properties

Tensile Strength , MPa	Yield Strength, MPa	Elongation, %
335 min	205 min	24 min

Dimensions & Tolerance

Side Length (mm)	Tolerance
Side Length (mm)	Ordinary	Advanced
SL≤30mm	±0.30mm	±0.20mm
30mm＜SL≤50mm	±0.40mm	±0.30mm
50mm＜SL≤75mm	±0.80%	±0.70%
SL>75mm	±1%	±0.80%
Wall Thickness (mm)	Tolerance
Wall Thickness (mm)	Ordinary	Advanced
WT≤1mm	±0.18mm	±0.12mm
1mm＜WT≤3mm	+15%/-10%	+12.5%/-10%
WT>3mm	+12.5%/-10%	±10%

GB/T 25822 specifies the classification, code, order content, size, shape, weight and allowable deviation, technical requirements, test methods, inspection rules, packaging, marking and quality certificate of shaped and round seamless steel tubes for axles. GB/T 25822 is applicable to shaped seamless steel tubes for axles, as well as round seamless steel tubes for axles.
GB/T 25822规定了车轴用异型及圆形无缝钢管的分类、代号、订货内容、尺寸、外形、重量及允许偏差、技术要求、试验方法、检验规则、包装、标志和质量证明书。GB/T 25822适用于车轴用异型无缝钢管，同时适用于车轴用圆形无缝钢管。

Manufacture: tubes to GB/T 25822 shall be manufactured by seamlesss process.
Delivery Condition: tubes should be delivered under cold finished condition, with purchaser agreement, it can also be with heat treated.
Inspection & Test: chemistry composition analysis, tensile test, surface inspection and dimension check.

Keyword: GB/T 25822, Shaped Steel Tubes, Cross-section Shaped

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