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GB/T 3093 10A
GB/T 3093 20A
GB/T 3093 Q345A
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GB/T 3093 High-pressure seamless steel tubes for diesel engine
Standard: GB/T 3093
Equivalent Standard: DIN 73000, DIN 2391, EN 10305-1, EN 10305-4, ASTM A519, NF 699, GOST 9567-75, NBR 8476, BS 6323 Part 4, NF A 49-330-85, BS 6323-4, NF A 49-310, UNI 6403
Material: 20A
Equivalent Materials: 1020, St45, E255
Chemistry Composition
C, %
Si, %
Mn, %
P, %
S, %
Cr, %
Ni, %
Cu, %
0.17-0.23
0.17-0.37
0.35-0.65
0.030 max
0.030 max
0.25 max
0.30 max
0.20 max
Mechanical Properties
Tensile Strength , MPa
Yield Strength, MPa
Elongation, %
Delivery Condition
390-540
245 min
25 min
Heat Treatment
GB/T 3093 specifies the order content, classification,code, size, shape, weight and allowable deviation, technical requirements, test methods, inspection rules, packaging, marking and quality certificate of high-pressure seamless steel tubes for diesel engine. GB/T 3093 is suitable for manufacturing cold drawn seamless steel tubes for high pressure oil tubes of diesel engine injection systems.
GB/T 3093规定了柴油机用高压无缝钢管的订货内容、分类代号、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 3093适用于制造柴油机喷射系统高压油管用的冷拔无缝钢管。
Manufacture: tubes to GB/T 3093 shall be manufactured by cold rolled or cold drawn.
Delivery Condition: the tubes should be heat treated after final drawn.
Inspection & Test: chemistry composition analysis, tensile test, flattening test, flaring test, NDT, surface inspection and dimension check.
Length: 5800mm; 6000mm; 10000mm; 11800mm; and so on.
Further process: cutting, deformation.
Keyword: precision steel tube, GB/T 3093, DIN 73000, DIN 2391, precision steel pipe, cng tube, HPL Tube
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