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ASTM seamless pipe is a type of steel pipe with a hollow cross-section and no welds. It is made of materials such as carbon steel, alloy steel or stainless steel. ASTM seamless pipes have the advantages of strong pressure bearing capacity, stable quality, good corrosion resistance and strong mechanical properties. So they are widely used in petroleum, chemical, shipbuilding, nuclear power and machinery manufacturing industries.

Specification of ASTM Seamless Pipe

The standard used for ASTM seamlelss pipes is ASME B36.10M or ASME B16.19M. The size range from 1/8 inch to 48 inche. There are also various specifications for wall thickness, such as SCH40, STD, XS, SCH80, SCH160, XXS, etc. Different wall thickness specifications are suitable for different application environments and pressure requirements.

Processing Method	Seamless and Welded
Size Range	1/8″-48″ /DN6-1200
Thickness Schedule	SCH 10,SCH 20,SCH 40,STD,XS,SCH 100,SCH 120,SCH 160,XXS
Length	6m or 12 m or Random
Standard	ASME B36.10M
Surface Treatment	Blasting and Painting,Epoxy Powder FBE,2PE,3PE Coating
Material Grade	ASTMA106B/A53,API5LB/X42/46/52/56/60/65/70,A333 GR6

Weight List of ASTM Seamless Pipe

Nominal Size		OD	kg/m
DN	NPS	mm	Sch 10	Sch 20	Sch 30	STD	Sch 40	Sch 60	XS	Sch 80	Sch 100	Sch 120	Sch 140	Sch 160	XXS
6	1/8	10.3	0.28		0.32	0.37	0.37		0.47	0.47
8	1/4	13.7	0.49		0.54	0.63	63		0.8	0.8
10	3/8	17.1	0.83		0.7	0.84	0.84		1.1	1.1
15	1/2	21.3	1		1.12	1.27	1.27		1.62	1.62				1.95	2.55
20	3/4	26.7	1.28		1.44	1.69	1.69		2.2	2.2				1.9	364
25	1	33.4	2.09		2.18	2.5	2.5		3.24	3.24				4.24	5.45
32	1 1/4	42.2	2.7		287	3.39	3.39		4.47	4.47				5.16	7.77
40	1 1/2	48.3	3.11		3.53	4.05	4.05		5.41	5.41				7.25	9.58
50	2	60.3	3.03		4.48	5.44	5.44		7.48	7.48				11.11	13.44
65	2 1/2	73	5.26		8.04	8.63	863		11,41	11.41				14.92	20.39
80	3	88.9	6.45		9.92	11.29	1.29		15.72	15.72				21.35	27.68
90	3 1/2	101.6	7.4		1.41	13.57	13.57		18.63	18.63
100	4	114.3	8.38		12.91	18.07	16.07		22.32	22.32		28.32		33.54	41.03
125	5	141.3	11.57			21.77	21.77		30.97	30.87		40.28		40.11	57.43
150	6	168.3	13.48			28.26	28.26		42.58	42.56		5420		67.58	79.22
200	8	219.1	19.98	33.31	36.81	42.55	42.55	53.08	84.64	84.84	75.92	90.44	100.9	11.3	107.9
250	10	273	27.78	41.77	51.03	60.31	60.31	81.55	81.55	96.01	114	133.1	155.2	172.3	155.2
300	12	323.9	36	49.72	85.2	73.88	79.73	109	97.48	32.1	159.9	87	208.1	238	187
350	14	355.6	54.69	67.9	81.33	81.33	94.55	126.7	107.4	58.1	195	224.7	253.6	281.7
400	16	406.4	62.64	77.83	93.27	93.27	123.3	160.1	123.3	209.5	2456	206.7	333.2	365.4
450	18	457	70.57	37.71	122.4	105.2	155.8	205.7	139.2	254.6	4098	363.8	408.3	459.4
500	20	508	78.55	117.2	155.1	117.2	183.4	247.8	155.1	311.2	381.5	441.5	508.1	564.8
550	22	559	86.54	129.1	171.1	129.1	–	294.2	171.1	373.8	451.4	527	611	672.2
600	24	610	94.53	141.1	209.6	141.1	255.4	355.3	187.1	442.1	547.7	640	720.2	808.2

Material Standards for Seamless Pipe

ASTM seamless pipe materials include carbon steel; low-temperature steel; pipeline steel; alloy steel; stainless steel and duplex stainless steel.

Carbon Steel

Carbon steel is one of the main materials for ASTM seamless pipe. It is mainly composed of iron and carbon, and may contain small amounts of elements such as manganese, phosphorus, etc. Carbon steel has excellent mechanical and processing properties and is widely used in various industrial fields.

Chemical Composition

CHEMICAL	LIMITS	C	Mn	P	S	Cu	Ni	Cr	Mo	V	Si
ASTM A106B	MIN		0.29								0.10
	MAX	0.30	1.06	0.035	0.04	0.40	0.400	0.40	0.15	0.080

Mechanical Properties

MATERIAL	T.S (MPA)	Y.S (MPA)	EL %
ASTM A106 GR B	415 min	240 min	22 min

Low-Temperature Steel

Low temperature seamless pipe is a steel pipe material with excellent performance in low-temperature environments. It must meet the -46 ℃ impact requirement. Widely used in various fields such as petroleum, chemical, natural gas, electricity, aviation, and shipbuilding. It can maintain stability in strength and hardness at extremely low temperatures, ensuring the normal operation of pipelines and equipment.

Chemical Composition

CHEMICAL	LIMITS	C	Mn	P	S	Si	Cu	Ni	Cr	Mo	V	Nb
ASTM A333 GR 6	MIN		0.29			0.10
	MAX	0.30	1.06	0.025	0.025		0.40	0.40	0.30	0.12	0.08	0.02

Mechanical Properties       

MATERIAL	T.S (MPA)	Y.S (MPA)	EL %
ASTM A333 GR 6	415 min	240 min	30 min

API 5L Seamless Pipe

API 5L seamless pipe has become an important material for long-distance fluid transportation pipelines due to its high strength, high toughness, good weldability, and corrosion resistance.

Chemical Composition

CHEMICAL	LIMITS	C	Mn	P	S	Si	V	Ni	Mo	Cu
API 5L X42	MIN
	MAX	0.160	1.650	0.02	0.01	0.450	0.07
API 5L X65	MIN
	MAX	0.12	1.60	0.025	0.015	0.450			0.50	0.50
API 5L X70	MIN
	MAX	0.12	1.7	0.025	0.015	0.45			0.5	0.5

Mechanical Properties 

MATERIAL	T.S (MPA)	Y.S (MPA)
API 5L X42	415min	290min
API 5L X65	535min	450min
API 5L X70	570min	485min

Alloy Steel

Alloy steel is made on the basis of carbon steel by adding one or more alloying elements such as chromium, nickel, molybdenum, silicon, etc.

Chemical Composition

CHEMICAL	LIMITS	C	Mn	P	S	Si	Cr	Mo
ASTM A335 P5	MIN		0.30				4.0	0.44
	MAX	0.15	0.60	0.025	0.025	0.50	6.0	0.65
ASTM A335 P9	MIN		0.30			0.25	8.0	0.9
	MAX	0.15	0.60	0.025	0.025	1.00	10.0	1.1
ASTM A335 P11	MIN	0.05	0.30			0.50	1.00	0.44
	MAX	0.15	0.60	0.025	0.025	1.00	1.50	0.65
ASTM A335 P22	MIN	0.05	0.30				1.90	0.87
	MAX	0.15	0.60	0.025	0.025	0.50	2.60	1.13

Mechanical Properties 

MATERIAL	ASTM A335 P5	ASTM A335 P9	ASTM A335 P11	ASTM A335 P22
T.S (MPA)	415 min	415 min	415 min	415 min
Y.S (MPA)	205 min	205 min	205 min	205 min
EL %	30 min	30 min	30 min	30 min

Stainless Steel Seamless Pipe

Stainless steel is an alloy steel with corrosion resistance, mainly composed of elements such as iron, chromium, nickel, etc.

Chemical Composition

CHEMICAL	LIMITS	C	Mn	P	S	Si	Ni	Cr	Mo	N
ASTM A312 TP304L	MIN						8.00	18.00
	MAX	0.035	2.00	0.045	0.030	1.00	13.00	20.00
ASTM A312 TP316L	MIN						10.00	16.00	2.00
	MAX	0.035	2.00	0.045	0.030	1.00	14.00	18.00	3.00
ASTM A312 TP317L	MIN						11.00	18.00	3.00
	MAX	0.035	2.00	0.045	0.030	1.00	15.00	20.00	4.00
ASTM A312 TP321	MIN						9.00	17.00
	MAX	0.080	2.00	0.045	0.030	1.00	12.00	19.00		0.10
ASTM A312 TP347	MIN						9.00	17.00
	MAX	0.080	2.00	0.045	0.030	1.00	13.00	19.00

Mechanical Properties 

MATERIAL	T.S (MPA)	Y.S (MPA)	EL %
ASTM A312 TP304L	485 min	170 min	35 min
ASTM A312 TP316L	485 min	170 min	35 min
ASTM A312 TP317L	515 min	205 min	35 min
ASTM A312 TP321	515 min	205 min	35 min
ASTM A312 TP347	515 min	205 min	35 min

Duplex Stainless Steel Seamless Pipe

Duplex stainless steel seamless steel pipes have excellent resistance to comprehensive corrosion and localized corrosion, good weldability and processability.

Chemical Composition

CHEMICAL	LIMITS	C	Mn	P	S	Si	Ni	Cr	Mo	N	Cu
ASTM A790 UNS S32205	MIN						4.50	22.00	3.00	0.14
	MAX	0.03	2.00	0.030	0.020	1.00	6.50	23.00	3.50	0.20
ASTM A790 UNS S32750	MIN						6.00	24.00	3.00	0.24
	MAX	0.030	1.20	0.035	0.020	0.80	8.00	26.00	5.00	0.32	0.5
ASTM A790 S32760	MIN							24.00	3.00
	MAX	0.03	1.00	0.03				26.00	4.00
ASTM A790 S31803	MIN						4.5	21.00	2.50	0.08
	MAX	0.03	2.00	0.03	0.02	1.00	6.5	23.00	3.50	0.20

Mechanical Properties 

MATERIAL	T.S (MPA)	Y.S (MPA)	EL %	HARDNESS
ASTM A790 UNS S32205	655min	450min	25min	290max
ASTM A790 UNS S32750	800min	550min	15min	300max
ASTM A790 S32760	750min	550min	25min	310max
ASTM A790 S31803	620min	450min	25min	290max

How to Inspect ASTM Seamless Pipe

Package of Seamless Pipe

ASTM seamless pipes require surface treatment before packaging. Carbon steel pipes are generally coated with anti rust paint or galvanized to protect their surface and prevent rusting. Stainless steel pipes undergo acid pickling and sandblasting treatment on the surface to ensure a clean and tidy appearance.
ASTM seamless pipes are often packaged by bundling them together. Bundled steel pipes should be firmly tied with steel strips or wires to ensure that they will not loosen during transportation. Sealing and labeling should be applied before packaging, and the labels should be clear and legible.

17 12 月, 2024