Seamless steel tube

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Seamless steel pipe

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Seamless steel tube is an important metal pipe with high strength, corrosion resistance, high temperature resistance and other characteristics. It is widely used in industry, construction, transportation, petroleum, chemical industry and other fields. The material and specifications of the steel tube have a great influence on its performance, use, price, etc.

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Product Details

Seamless steel tube Advantage

Seamless performance is good. Seamless steel tubes are manufactured through continuous rolling and multi-pass steel pipe walls being seamlessly shaped. In this way, the performance of the raw materials can be fully utilized to achieve more uniform mechanical properties. At the same time, the steel pipe wall is also smoother and better surface treatment effect can be obtained. This is also a particularly important point in the use of steel tubes.
The heat treatment effect is good. Compared with other types of steel tubes, steel tubes have better results during heat treatment because the purity of seamless steel tubes is higher, and various deformation and stress problems of the steel tubes walls can also be better handled. Therefore, during the heat treatment process, the steel pipe has higher strength and is less prone to thermal cracks and other heat mark problems, ensuring the stability and safety of the steel tubes in use.
Excellent mechanical properties. Seamless steel tubes has better mechanical properties, its tensile strength is higher than some other types of steel tubes, and its yield strength and elastic modulus far exceed those of other types of steel tubes. These are the excellent properties brought about by seamless performance and are also the main factors why steel tubes are widely used in various industries.
The quality is better. Since the manufacturing process of steel tubes is less prone to defects and other more complex problems, its production rate is much higher than that of other types of steel tubes. This ensures that the overall quality of steel tubes is higher than other steel pipes. More reliable and stable.
Better adaptability. It has better adaptability in use and can not only be used in mechanical processing and construction projects in various industries, but also has good performance in transporting petroleum gas and chemicals. At the same time, the scope of use of steel tubes is also very wide, which can meet a variety of different needs, ensuring the convenience and flexibility of its use.

Seamless steel tube Chemical Composition

Standard	Grade	Chemical Composition (%)
ASTM A53	Grade	C	Si	Mn	P	S
	A	≤0.25	-	≤0.95	≤0.05	≤0.06
	B	≤0.30	-	≤1.2	≤0.05	≤0.06
ASTM A106	A	≤0.30	≥0.10	0.29-1.06	≤0.035	≤0.035
ASTM A106	B	≤0.35	≥0.10	0.29-1.06	≤0.035	≤0.035
ASTM A179	A179	0.06-0.18	-	0.27-0.63	≤0.035	≤0.035
ASTM A192	A192	0.06-0.18	≤0.25	0.27-0.63	≤0.035	≤0.035
API 5L PSL1	A	0.22	-	0.9	0.03	0.03
	B	0.28	-	1.2	0.03	0.03
	X42	0.28	-	1.3	0.03	0.03
	X46	0.28	-	1.4	0.03	0.03
	X52	0.28	-	1.4	0.03	0.03
	X56	0.28	-	1.4	0.03	0.03
	X60	0.28	-	1.4	0.03	0.03
	X65	0.28	-	1.4	0.03	0.03
	X70	0.28	-	1.4	0.03	0.03
API 5L PSL2	B	0.24	-	1.2	0.025	0.015
	X42	0.24	-	1.3	0.025	0.015
	X46	0.24	-	1.4	0.025	0.015
	X52	0.24	-	1.4	0.025	0.015
	X56	0.24	-	1.4	0.025	0.015
	X60	0.24	-	1.4	0.025	0.015
	X65	0.24	-	1.4	0.025	0.015
	X70	0.24	-	1.4	0.025	0.015
	X80	0.24	-	1.4	0.025	0.015

Seamless steel tube Mechanical Property

Standard	Grade	Mechanical Properties
ASTM A53	Grade	Tensile STrength(Mpa)	Yield STrength(Mpa)
	A	≥330	≥205
	B	≥415	≥240
ASTM A106	A	≥415	≥240
ASTM A106	B	≥485	≥275
ASTM A179	A179	≥325	≥180
ASTM A192	A192	≥325	≥180
API 5L PSL1	A	≥331	≥207
	B	≥414	≥241
	X42	≥414	≥290
	X46	≥434	≥317
	X52	≥455	≥359
	X56	≥490	≥386
	X60	≥517	≥448
	X65	≥531	≥448
	X70	≥565	≥483
API 5L PSL2	B	≥414	≥241
	X42	≥414	≥290
	X46	≥434	≥317
	X52	≥455	≥359
	X56	≥490	≥386
	X60	≥517	≥414
	X65	≥531	≥448
	X70	≥565	≥483
	X80	≥621	≥552

Seamless steel tube Specification

Pipe types	Pipe Szie(mm)		Tolerances
Hot rolled	OD	All	±1% (min ±0.50mm)
Hot rolled	WT	All	+15%, -12.5%
Cold drawn	OD	6～10	±0.20mm
		10～30	±0.40mm
		30～50	±0.45mm
		>50	±1%
	WT	≤1	±0.15mm
		>1～3	+15% -10%
		>3	+12.5% -10%

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