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GB/T 3094 Cold Drawn Shaped Steel Tubes

Standard: GB/T 3094
Equivalent Standards: ASTM A500/A500M

Material: Q345
Equivalent Material: St52, E355, Q355B

Chemistry Composition

C, %	Si, %	Mn, %	P, %	S, %	Cr, %	Ni, %	Cu, %
0.24 max	0.55 max	1.60 max	0.025 max	0.025 max	0.30 max	0.30 max	0.40 max

Mechanical Properties

Tensile Strength , MPa	Yield Strength, MPa	Elongation, %
510 min	345 min	21 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 3094 specifies the classification, code, shape, size and allowable deviation, technical requirements, test methods, inspection rules, packaging, marking and quality certificate of cold drawn shaped steel pipes. GB/T 3094 is applicable to structural steel pipes with simple cross-sections made of carbon structural steel, high-quality carbon structural steel, and low-alloy high-strength structural steel.
GB/T 3094规定了冷拔异型钢管的分类、代号、外形、尺寸及允许偏差、技术要求、试验方法、检验规则、包装、标志和质量证明书。GB/T 3094适用于碳素结构钢、优质碳素结构钢和低合金高强度结构钢制成的结构用简单断面异型钢管。

Manufacture: tubes to GB/T 3094 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 3094, Shaped Steel Tubes, Cross-section Shaped

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