GB/T 14291 L245J/BJ Welded Steel Pipes for Ore Pulp Transportation, ASME B31.4, API 5L, L245J/BJ, L290J/X42J, L320J/X46J, L360J/X52J, L390J/X56J, L415J/X60J, L450J/X65J, L485J/X70J

GB/T 14291 Welded Steel Pipes for Ore Pulp Transportation

Standard: GB/T 14291
Equivalent Standard: ASME B31.4, API 5L

Material: L245J/BJ
Equivalent Material: 1010, E235, St35.8, St37

Chemistry Composition

C, %	Si, %	Mn, %	Cr, %	Ni, %	S, %	P, %	Cu, %
0.07-0.14	0.17-0.37	0.35-0.65	0.15 max	0.30 max	0.040 max	0.035 max	0.30 max

Mechanical Properties

Tensile Strength, MPa	Yield Strength, MPa	Elongation, %
353 min	216 min	24 min

Outside Diameter & Tolerance

Outside Diameter, mm	Tolerance
32≤OD≤50	±0.5mm
51≤OD≤219	±1%

Wall thickness & Tolerance

Wall Thickness, mm	Tolerance, %
3≤OD≤15	+12.5/-15
16≤OD≤30	±12.5
32≤OD≤45	+10/-12.5

GB/T 14291 specifies the material grade indication method, order content, size, shape, weight and allowable deviation, technical requirements, test methods, inspection rules, packaging, markings and quality certificates of electric-welded steel pipes for ore powder and slurry transportation. GB/T 14291 is applicable to electric-welded steel pipes for the transportation of ore powder, ore slurry, and dredging pipelines of rivers and ports.
GB/T 14291规定了矿粉矿浆输送用电焊钢管的牌号表示方法、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 14291适用于矿粉、矿浆输送及河道、港口码头疏浚管线用电焊钢管。

Manufacture: the tubes shall be manufactured by cold drawn and hot rolled.
Delivery Condition: heat treated.
Inspection & Test: chemical composition test, elongation test, hardness test, flattening test, bending test, flaring test, NDT, surface inspection and dimension check.

Length: 4000mm; 6000mm; 6500mm; 10000mm; 12010mm; and so on.
Max length: 18000mm

Keyword: GOST 8732-78, Steel Pipe, Hot worked Steel Pipe, Seamless Steel Pipe

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