GB/T 3087 grade 10 carbon steel seamless pipe for low and medium pressure boiler

Standard: GB/T3087

GB/T 3087 is excessive standard for manufacturing various high-quality carbon structural steel seamless steel tubes for low-pressure and medium-pressure boilers.

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GB/T 3087 is excessive standard for manufacturing various high-quality carbon structural steel seamless steel tubes for low-pressure and medium-pressure boilers. The order content, size, shape, weight, technical requirements, test methods, inspection rules, packaging, marking and quality certificate of GB/T 3087 grade 10 carbon steel seamless pipe are specified clearly in GB/T 3087 standard, and the GB/T 3087 grade 10 boiler steel pipe manufacture should follow the stipulation strictly.

GB/T 3087 grade 10 carbon steel seamless pipe chemical composition:

C, %	Mn, %	Si, %	P, %	S, %	Cr, %	Ni, %	Cu, %
0.07-0.13	0.35-0.65	0.17-0.37	0.035 max	0.035 max	0.15 max	0.30 max	0.25 max

GB/T 3087 grade 10 carbon steel seamless pipe mechanical properties:

Tensile Strength	Yield Strength	Elongation
335-475MPa	≥205MPa(WT≤16mm); ≥195MPa (WT>16mm)	≥24%

Wall thickness tolerance of GB/T 3087 grade 10 carbon steel seamless pipe:

Hot rolled (Hot squeeze)	Outside Diameter, mm	Tolerance
	OD≤102	±12.5%WT or ±0.40mm, choose the larger
	OD>102, WT/OD≤0.05	±15%WT or ±0.40mm, choose the larger
	OD>102, 0.05<WT/OD≤0.10	±12.5%WT or ±0.40mm, choose the larger
	OD>102, WT/OD>0.10	+12.5%WT, -10%WT
Hot expanded	±15%WT
Cold Drawn (Cold rolled)	Wall thickness, mm	Tolerance
	WT≤3	+15%/-10%WT or ±0.15mm,choose the larger
	WT>3	+12.5%WT, -10%WT

GB/T 3087 grade 10 carbon steel seamless pipe shall be made by the seamless process, and it shall be either hot-finished or cold-finished, as specified. The delivery state of hot-finished grade 10 boiler steel pipe shall be hot rolled or normalized. The delivery state of cold-finished grade 10 boiler steel pipe shall be normalized.

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